Redescriptions of the Species of Amblyseiella and Chelaseius, with Resurrection of the Genus Status for Amblyseiulus
The article continues the studies of the fauna of phytoseiid mites in Ukraine, the results of which have been partly published by the author recently and contains a review of the genera Amblyseiulus, Amblyseiella, and Chelaseius. A detailed morpho-functional rationale for the resurrection of the gen...
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"author": "L. A. Kolodochka ",
"institution": "I. I. Schmalhausen Institute of Zoology NAS of Ukraine, Kyiv",
"orcid": ""
}
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| author_sort | Kolodochka , L. A. |
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| description | The article continues the studies of the fauna of phytoseiid mites in Ukraine, the results of which have been partly published by the author recently and contains a review of the genera Amblyseiulus, Amblyseiella, and Chelaseius. A detailed morpho-functional rationale for the resurrection of the genus Amblyseiulus Muma, 1961 as a part of the subtribe Proprioseiopsina Chant & McMurtry is provided. In this study, seven species of this genus were identified, one of which, Amblyseiulus jugortus (Athias-Henriot, 1966), is recorded for the first time in the fauna of Ukraine. The genus Amblyseiella Muma, 1955 is represented in Ukraine by the species A. antonii Kolodochka & Omeri, 2010, the second of two species of this genus known in the world. The species Chelaseius (Pontoseius) valliculosus Kolodochka, 1987 is also the only representative of this genus and subgenus in Ukraine. Based on the results of the study, comprehensive illustrated redescriptions of each of the taxa are given, morphological and morphometric data, information on the distribution of genera and species in the world and Ukraine, mite habitats, depositories of type specimens, occurrence, abundance and keys for identification of genera and species. |
| doi_str_mv | 10.15407/zoo2024.02.103 |
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© Publisher Publishing House "Akademperiodyka" of the NAS of Ukraine, 2024. Th e article is published under
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UDC 595.42(477)
PREDATORY MITES (PHYTOSEIIDAE, PARASITIFORMES)
OF THE FAUNA OF UKRAINE: REDESCRIPTIONS
OF THE SPECIES OF AMBLYSEIELLA AND CHELASEIUS,
WITH RESURRECTION OF THE GENUS STATUS FOR
AMBLYSEIULUS
L. A. Kolodochka
I. I. Schmalhausen Institute of Zoology NAS of Ukraine,
vul. B. Khmelnytskoho, 15, Kyiv, 01054 Ukraine
E-mail: leonsponsor@gmail.com
http://orcid.org/0000-0002-2626-0463
urn:lsid:zoobank.org:pub:AAB52AB5-4B0F-4D18-9F3F-62D6AF5B5081
Predatory Mites (Phytoseiidae, Parasitiformes) of the Fauna of Ukraine: Redescriptions of the
Species of Amblyseiella and Chelaseius, with Resurrection of the Genus Status for Amblyseiulus.
Kolodochka, L. A. — Th e article continues the studies of the fauna of phytoseiid mites in Ukraine, the
results of which have been partly published by the author recently and contains a review of the genera
Amblyseiulus, Amblyseiella, and Chelaseius. A detailed morpho-functional rationale for the resurrection
of the genus Amblyseiulus Muma, 1961 as a part of the subtribe Proprioseiopsina Chant & McMurtry is
provided. In this study, seven species of this genus were identifi ed, one of which, Amblyseiulus jugortus
(Athias-Henriot, 1966), is recorded for the fi rst time in the fauna of Ukraine. Th e genus Amblyseiella
Muma, 1955 is represented in Ukraine by the species A. antonii Kolodochka & Omeri, 2010, the
second of two species of this genus known in the world. Th e species Chelaseius (Pontoseius) valliculosus
Kolodochka, 1987 is also the only representative of this genus and subgenus in Ukraine. Based on the
results of the study, comprehensive illustrated redescriptions of each of the taxa are given, morphological
and morphometric data, information on the distribution of genera and species in the world and Ukraine,
mite habitats, depositories of type specimens, occurrence, abundance and keys for identifi cation of genera
and species.
Key words : phytoseiid mites, taxonomy, diagnoses, new record, resurrection of generic status.
Introduction
Recently, interest in the predatory mites of Phytoseiidae (Acarina, Parasitiformes) has increased. Th ey
are known to control populations of phytophagous mites and small insects that cause serious damage to
agricultural production. Published articles discuss various areas of research of this family. Th e accumulated
material in some cases forces us to reconsider seemingly established solutions not only in applied research, but
also in the fi eld of taxonomy.
Zoodiversity, 58(2):103–128, 2024
DOI 10.15407/zoo2024.02.103
104 L. A. Kolodochka
Th is article continues previously published results of long-term studies of the composition of phytoseiid
mites in the fauna of Ukraine (Kolodochka, 2022, 2023 a, b) and contains a review of species of the genera
Amblyseiella Muma, Chelaseius Muma & Denmark and Amblyseiulus Muma. To the latter genus, the status
of an independent genus is resurrected as a result of a reassessment of the previously used criteria. One of the
studied species, Amblyseiulus jugortus (Athias-Henriot, 1966), is recorded for the fi rst time in the fauna of
Ukraine.
Th e article provides detailed descriptions of the identifi ed species, new data on their distribution,
accompanied by diagnoses, descriptions of morphological characteristics and measurement data, information
on typical habitats, assessment of abundance and frequency of occurrence, information on distribution in the
world and in Ukraine.
Material and Methods
Th e description of the collection technique and the methods of preparation of faunistic material for the
study were described in detail earlier. Referring to the corresponding section of the fi rst article in this series
of publications (Kolodochka, 2022), you can get more complete information. Here the main methodological
stages of the work are refl ected here.
Th e material was taken in diff erent natural zones of Ukraine on ground vegetation of diff erent types by
shaking off mites with a stick onto surface of black plastic peace. Mites were collected from a black sheet with
a needle and placed in 70 % ethanol, and in the laboratory they were mounted in Hoyer’s liquid on glass slides.
Th e prepared slides were kept into a thermostat at 60°C for 2–3 weeks until Hoyer’s liquid completely dried.
Th e specimens were examined under an MBI-3 (LOMO) light microscope with a magnifi cation of 10–90× and
a KF-4 phase-contrast device with a camera lucida PA-6 (LOMO) 1.5× to perform drawings and measurements.
All drawings in the article are made by the author. More detailed data can be obtained from earlier publications
(Kolodochka, 2022; 2023 a, b).
Th e type material used in the study is deposited in the collections of the I. I. Schmalhausen Institute of
Zoology, National Academy of Sciences of Ukraine, Kyiv (SIZK) and in Canadian National Collection, Ottawa,
Canada (CNC). If the type material was absent or it condition was insuffi ciently suitable for drawing, measuring,
etc., the description of species, their measurements, and illustrations were based on non-type specimens from
Ukraine. Naturally, such specimens must to be in better condition than type specimens aft er long-term storage
in the collection. Th e non-type specimens were comparing them with types from B. A. Wainstein collection
deposited at the Department of Acarology (SIZK), or with illustrations and measurements of specimens in
publications of other authors. Measurements are given in micrometers (μm). Th e terminology of idiosomal
setae follows Wainstein (1973 a) with slight modifi cations, or Wainstein (1973 b) and Kolodochka (1990) for
the reproductive system of phytoseiids.
Subfamily Amblyseiinae
Tribe Amblyseiini
Subtribe Amblyseiina
Genus Amblyseiella Muma, 1955
Amblyseiella Muma, 1955: 266; Karg, 1993:174; Chant & McMurtry, 2007: 71; Kolodochka
& Omeri, 2010: 87; Denmark & Evans, 2019: 23;
Amblyseius (Amblyseiellus): Wainstein, 1962: 14;
Amblyseius (Amblyseiella): Pritchard & Baker, 1962: 225;
Typhlodromus (Amblyseiellus) setosus group, Chant, 1959: 70.
Type species: Amblyseiella setosa Muma, 1955: 225.
Diagnosis . Dorsal side of body with 18 pairs of setae: AD1, AD2, AD3, AD4; PD2,
PD4; AM1, AM2; AL1, AL3, AL4; PL1, PL2, PM1, PM3, PM4 — on dorsal shield; AS,
PS — on interscutal membrane. Setae PL3 is absent. Dorsal setae contrastingly different in
length. Ventrianal shield of the female is reduced, bearing 1 pair of preanal setae Pr2 and a
pair of anal pores. Pair of ventral setae V3 absent.
105Predatory Mites of the Fauna of Ukraine: Redescriptions of the Species of Amblyseiella and Chelaseius…
Note. For quite a long time, there was an opinion that the genus is represented in the
world fauna by three species (Chant & McMurtry, 2007). At the same time, the species in-
dependence of two of them has been repeatedly questioned by various researchers (Chant
& McMurtry, 2004; Demite et al., 2023). As a result, species A. rusticana (Athias-Henriot,
1960), and A. denmarki (Zaher & El-Brollosy in: Zaher, 1986) (Chant & McMurtry, 2004)
were finally recognized both as junior synonyms of the type species of the genus A. setosa
Muma, 1955 (Denmark & Evans, 2011). Another species, A. antonii Kolodochka & Omeri,
2010 described from Ukraine, is included as a valid taxon in the recently published funda-
mental surway (Denmark & Evans, 2019).
The structure and distribution of the genus. Representatives of the genus
Amblyseiella are currently known in North and South America, the Steppe and coastal
Regions of Europe and Africa, the Caucasus and the Middle East. One species is known in
Ukraine which discussed further (Denmark & Evans, 2019).
Amblyseiella antonii Kolodochka & Omeri, 2010 (fi g. 1)
Amblyseiella antonii Kolodochka & Omeri, 2010: 87; Denmark & Evans, 2019: 23.
Mater ia l . Type. Holotype }: Ukraine, Kyiv, Syretski Park, Juniperus sabina, 18.08.2008, specimen
#5986/1622, 50°28'03.0" N 30°26'24.0" E (Omeri) (SIZK).
Non–type. Ukraine: Lugansk Region, Stanytsa Luhanska, Luhansk Nature Reserve, manor of the reserve,
Acer tataricum, 08.09.2013, specimen #6541, 1 }, 48°37'47.0" N 39°31'07.0" E (Kolodochka) (SIZK).
Redescription. Female. Dorsal shield (fig. 1, 1) weakly sclerotized, finely striated
in anterolateral parts; dorsal solenostomes 7 pairs (it, iv, id, isc, il, is, ic). Dorsal setae point-
ed, needle-shaped (both setae PL1 broken off in holotype). Setae AD2–AD4, PD2, PD4,
AM2, PM1 very short, AL4, PM3, PM4 elongate, others medium length. Setae PM4 with
1–2 serrations, others smooth. Setae AM1 and AL2 longer than the distance to the theca of
the subsequent setae. Ventrianal shield (fig. 1, 2) small, oval, with 1 pair of preanal setae;
anal pores small, distinct, round, located caudal to the level of theca PrA2. Setae V1, V2,
PrA1, MV1, MV2, and PV on membrane surrounding ventrianal shield. Setae V3 both
absent. Perithremes extend beyond the level of the techae of setae AD1. Anterior metapo-
dal shield linear, posterior curved (fig. 1, 3). The posterior part of the peritremal shield is
slightly curved, rounded at the end with a short sharp process (fig. 1, 4). There are 3 large
teeth on Df of the chelicerae, and 1 on Dm (fig. 1, 5). The funnel of the spermatheca is bell-
shaped, the atrium is sessile (fig. 1, 6). Macroseta on legs pointed, smooth. Leg IV has 3 long
macrosetae: longest on genu, shorter on basitarsus, and shortest on tibia (fig. 1, 7–9). Genu
on other legs with short macrosete.
Measurements. Lds 438, Wds 237; Lvas 119, Wvas 103, Lian 39; LtIV 176; setae
length: AD1 38; AD2 3; AD3 5; AD4 7; PD2 8; PD4 8; AM1 62; AM2 3; AL1 25; AL2 74;
AL4 106; PL1 58; PL2 41; PM1 9; PM2 82; PM3 106; AS 23; PS 38; PV 80; MCh IV: ge 99, ti
63, ta 66; MCh III: ge 56; MCh II: ge 38; MCh I: ge 41.
Male unknown.
Diagnosis . Amblyseiella antonii is the only representative of the genus in the fauna
of Ukraine. It can be easily distinguished from species of other genera outwardly similar to
it by generic characters: the dorsal seta PL3 and ventral seta V3 are absent; the ventrianal
shield is reduced, with only one pair of preanal setae.
Distribution, habitat , occurrence. Europe (Ukraine). In Ukraine A. antonii
known only in two geographically distant localities in Wood-and-Steppe (Kyiv, shrub: Ju-
niperus sabina), and Steppe (Luhansk Region: trees: Acer tataricum); rarely.
106 L. A. Kolodochka
Fig. 1. Amblyseiella antonii Kolodochka & Omeri, 2010 } (1–9): 1 — dorsal shield; 2 — ventral body surface;
3 — metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — genu;
8 — tibia; 9 — tarsus (fragment).
5
4
8
7
9
3
21
6
107Predatory Mites of the Fauna of Ukraine: Redescriptions of the Species of Amblyseiella and Chelaseius…
Genus Chelaseius Muma & Denmark, 1968
Chelaseius Muma & Denmark, 1968: 232; Karg, 1993: 174;
Chelaseius (Chelaseius) Denmark & Kolodochka, 1990: 219;
Chelaseius (Pontoseius) Kolodochka & Denmark in Denmark & Kolodochka, 1990: 232.
Type species : Amblyseius fl oridanus Muma, 1955: 264.
Diagnosis . Dorsal side of body of female with 19 pairs of setae: AD1, AD2, AD3,
AD4; PD2, PD4; AM1, AM2; AL1, AL3, AL4; PL1, PL2, PL3, PM1, PM3, PM4 on the dor-
sal shield; AS, PS — on the interscutal membrane. Dorsal setae contrastingly different in
length. Dorsal shield well sclerotized, smooth; anterolateral margins may have oblique
striation or weak reticulate sculpture; carries up to 7 pairs of solenostomes (it, iv, id, il, isc,
is, ic; missing in some species id and isc). Dorsal setae differ sharply in length from micro-
chaetae to elongated and whip-like (more frequently AL4, PM3, PM4). Perithremes long,
with chaetoids. Ventrianal shield entire, with 3 pairs of preanal setae. Anal pores are pre-
sent. Legs I–IV bear macrochaetes differing in degree of development. Gnathobase wide,
pedipalps thickened, chelicerae massive in relation to body size, Dm without teeth, Df in
various species with 2–7 large teeth, which may be well-defined or smoothed; pilus dentilis
is noticeably displaced proximally.
According to the characteristics of the setae pattern, genus Chelaseius is closest to the
genus Amblyseius Berlese sensu Muma et Denmark, 1968 as well Amblyseiulus Muma,
1961, differing from both in hypertrophied chelicerae with Df longer than Dm. It differs
from the genus Amblyseiulus in the presence/absence of a pair of dorsocentral setae PD2.
The structure and distribution of the genus. There are 12 known species with world-
wide distribution. The vast majority of species have been recorded in the Nearctic of the
Neotropical Region, the Oriental Region, the Ethiopian Region, and the Australian Region
(Demite et al., 2023), one is known in Ukraine.
Subgenus Chelaseius s. str.
Representatives of the nominative subgenus have not been recorded in the Ukraine yet.
Subgenus Pontoseius Kolodochka & Denmark
Chelaseius (Pontoseius) Kolodochka & Denmark in: Denmark & Kolodochka, 1990: 232.
Type species: Chelaseius valliculosus Kolodochka, 1987: 773.
The monotypic subgenus Pontoseius Denmark et Kolodochka, 1990 was established
for the species Chelaseius valliculosus Kolodochka, 1987 on the basis of differences in the
structure of chelicerae, which in mites of the subgenus have straightened, blunt immobile
fingers with smoothed, poorly pronounced teeth, while in all species of the nominative
subgenus Df long, curved, pointed, with large sharp teeth (Denmark & Kolodochka, 1990).
In addition, the dorsal shield of the type species of the genus, Amblyseius floridanus Muma,
has 7 pairs of solenostomes, while C. valliculosus — only 5 pairs (id and il absent).
Chelaseius (Pontoseius) valliculosus Kolodochka, 1987 (fi g. 2)
Chelaseius valliculosus Kolodochka, 1987: 773;
Chelaseius (Pontoseius) Kolodochka & Denmark in: Denmark & Kolodochka, 1990: 232.
Mater ia l . Types. Holotype } (damaged): Ukraine: Autonomous Republic of Crimea, Karadag Reser-
ve, Tumanova balka, pine forest, litter with topsoil, 08.07.1980, specimen #4737 (3775), 44°55'20.0" N
35°12'34.0" E; paratype {, idem, Northern pass, litter near a huge stone, 31.07.1980, specimen #4738 (3712b)
(Kolodochka) (SIZK).
Non-types are absent.
108 L. A. Kolodochka
Fig. 2. Chelaseius valliculosus Kolodochka, 1987 } (1–7), { (8, 9): 1 — dorsal shield; 2 — ventral body surface;
3 — metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — fragment
of leg IV; 8 — ventrianal shield ; 9 — chelicera with spermatodactyl; 10 — distitarsus of leg I.
1
3
6
2
9
10
5
4
8
7
109Predatory Mites of the Fauna of Ukraine: Redescriptions of the Species of Amblyseiella and Chelaseius…
Redescription. Female. Dorsal shield (fig. 2, 1) well sclerotized, oval, narrowing
anteriorly, lateral emarginations barely marked, margins of anterolateral part covered with
reticulate sculpture in a small area; solenostomes 5 pairs (it, iv, isc, is, ic; missing id and il).
Setae AL4, PM2, and PM3 are long and scimitar-shaped; AD1 and AM1 are moderately
long; the rest are short or microchaetae 4–7 μm long. Setae PM3, PM4 slightly serrate, oth-
ers smooth. Perithremes long, almost converging before the theca AD1. Ventrianal shield
(fig. 2, 2) wide, obversely pear-shaped, with an almost straight anterior margin; anal pores
clearly visible, round. The posterior metapodal shield is triangular, larger than the anterior
one (fig. 2, 3). The posterior end of the peritremal shield is slightly curved (fig. 2, 4). Cheli-
cera with blunt fingers. Almost straight Df with large pilus dentilis and two barely visible
smoothed teeth, blunt Dm slightly curved, without teeth (fig. 2, 5). Spermatheca with coni-
cal funnel and well developed sessile atrium (fig. 2, 6). There are 3 macrochaetes on leg IV,
the longest on the genu, and the shortest on the basitarsus (fig. 2, 7). On the genu and tibia
of legs III, on the genua of legs II and I along a short macrochaete. Basitarsus of leg I with
long thin straight setae (fig. 2, 10).
Measurements. Lds 480, Wds 280; Lvas 140, Wvas 147, Lian 50; Ltar 129; setae
length: AD1 29; AD2 4; AD3 5; AD4 – ?; PD2 5,5–6; PD4 14; AM1 56; AM2 5,5–6; AL1 12;
AL3 9; AL4 86; PL1 9; PL2 10; PL3 11; PM1 – ?; PM3 135; PM4 192; AS 15; PS 11;PV 102;
MCh IV: ge 109, ti 88, ta 72; MCh III: ge 48, ti34; MCh II: ge39; MCh I: ge 34.
Male. Preanal setae 3 pairs; anal pores round, well visible (fig. 2, 8). The spermatodac-
tyl is slightly curved, sharply narrowed in the terminal third (fig. 2, 9). Lds — 345.
Distribution, habitat , occurrence. Europe (Ukraine). In Ukraine: known only
from the type locality; rare.
Subtribe Proprioseiopsina Chant & McMurtry, 2005
Proprioseiopsina Chant & McMurtry, 2005: 219.
Type genus: Proprioseiopsis Muma, 1961: 277.
The genus Amblyseiulus Muma (1961) with the type species Typhlodromus (Am-
blyseius) okanagensis Chant, 1957: 293 was established for mites with an idiosomal
dorsal setal pattern similar to that of the mites of the genus Amblyseius Berlese, 1914,
but with PD2 dorsal setae missing (J2 at Rowell et al., 1978). Later, the genus Ambly-
seiulus Muma as a junior synonym was merged with the genus Proprioseiopsis Muma,
1961 (Muma & Denmark, 1968) with the type species Typhlodromus terrestris Chant,
1959, which has simultaneously “setae L5 and D5 absent” according to Chant, 1959:
103, 157, fig. 247, or PM1 and PD2 (Wainstein, 1973 a), as well Z1 and J2 (Rowell et
al., 1978).
Thus, species with differ dorsal setal patterns were lumped in one genus. This cir-
cumstance introduced discrepance into the structure of the subtribe Proprioseiopsina
(Chant & McMurtry, 2005).
At the same time, it must be taken into account that a change in the structure or
elimination of any structures of the body in the process of onto- or phylogenesis is a
clear result of a serious morphological restructuring of organs and its interaction with
other organs. With a directed process of elimination, the seta not only disappears as
a receiver of tactile stimulation, but at the same time the configuration of the impulse
transmission pathways from the nerve ending to the signal processing center must be
changed oratrophy or be reconfigurated. This process must be bу directed by correc-
tion of the genome or under its control. When fixing a new state of the tactile system,
110 L. A. Kolodochka
changes inevitably should affect at least a part of the genome. This new state must be
selectioned and accepted or discards as unsuccessful. Well-known and well-grounded
views on the direction of evolutionary trends in the development of the Phytoseiidae
family consider hypotrichia of the chaetome of mites of the family as an irreversible
directional process (Chant, 1993). At the same time, external paired cuticular forma-
tions, their number and structure (setae of the dorsum as well setae of the ventral side
but in lesser extent) under conditions of hypotrichy acquire a large taxonomic weight,
as signs that, depending on their significance, can serve as markers indicating not only
the differentiation of taxa species level, but also on them more higher rank. That is
why combining in one generic taxon species with different setal patterns is extremely
undesirable by definition and cannot be accepted. A detailed justification for this was
given earlier (Kolodochka, 1998; Kolodochka, 2006). It follows from this that when
determining the taxonomic weight (significance) of a trait and its role in making a
decision on the generic status of the studied taxon, it is necessary to take into account
differences in the taxonomic weight of morphological characters belonging to different
categories of significance. At the same time, one should be especially careful when ap-
proaching signs that experience a clear pressure of function. It is quite obvious that the
topography of the chaetomic pattern is practically not under such pressure and is the
most reliable feature in solving many important problems of taxonomy and building
a natural system based on the relationship of taxa. When building a system based on
the principle of subordination of related taxa, the combination of carriers of different
patterns in one generic taxon cannot be natural and makes such an action meaningless.
The following taxonomic actions are performed here. The genus Amblyseiulus sensu
Muma, 1961 is considered to be a part of the subtribe Proprioseiopsina, which does not
affect the stability of the subtribe. It is resurrected in the genus rank, which eliminates the
existing imbalance. The genus Amblyseiulus includes all nominal species corresponding to
its generic diagnosis.
The genus Amblyseiulus is only one genus of the subtribe Proprioseiopsina is repre-
sented in the fauna of Ukraine.
Genus Amblyseiulus Muma, 1961
Type species: Typhlodromus (Amblyseiulus) okanagensis Chant, 1957: 293.
Diagnosis . Dorsal side of idiosoma carries 18 pairs of setae (PD2 missing): AD1,
AD2, AD3, AD4; PD4; AM1, AM2; AL1, AL3, AL4; PL1, PL2, PL3; PM1, PM3, PM4 — on
dorsal shield; AS, PS — both on interscutal membrane; carries up to 7 pairs of solenostomes
(it, iv, id, il, isc, is, ic). Seta PD2 is absent. Dorsal shield well sclerotized, smooth or reticu-
late in part or in whole, all setae needle-form smooth with the exception of serrate. In some
species setae AL3, PM3 and PM4 longer than other dorsal setae which vary from short to
miniature. Some species have dorsal setae of variable length, from short to moderately long,
without contrasting differences in size. Perithremes long, with chaetoids. Sternal shield
slightly wider than its own length, with notched the posterior margin. Ventrianal shield
entire, with 3 pairs of preanal setae and anal pores. Sizes of gnathobase and its parts are
proportional to idiosoma. Dm with 1–2 teeth, Df of various species with 2–7 large teeth.
Legs II to IV with macrosites in differing degree of development.
The structure and distribution of the genus. Only 7 species of the genus Amblyseiulus
have been identified in the fauna of Ukraine.
111Predatory Mites of the Fauna of Ukraine: Redescriptions of the Species of Amblyseiella and Chelaseius…
Amblyseiulus bregetovae Abbasova, 1970 (fi g. 3)
Amblyseiulus bregetovae Abbasova, 1970: 53;
Amblyseius bregetovae: Ghiliarov et al., 1977: 240;
Proprioseiopsis bregetovae: Moraes, de et al., 1986: 112;
Proprioseiopsis bregetovae: Karg, 1993:176; Chant & McMurtry, 2007: 89.
Mater ia l . Types. Holotype }: Azerbaijan: Institute of Zoology of Azerbaijan, Laboratory of Acarology,
Imishli, under haystack, 26.04.1963, specimen #70 (Hadzhiev) (not examined; the description and fi gures have
been made on non-type specimen from Ukraine).
Non–type. 24 specimens (24 }). Ukraine: Donetsk Region, Boikovskiy District, Zazhytochnoie village,
house mouse nest, 23.05.1968, specimen #S–98 (nest 135), 11 }; item, common vole nest, 15.02.1968, specimen
# S–99 (104 a), 8 }; ibid., the same data, specimen #S–100 (nest 104 b), 2 }; Velikonovosiolkovsky District,
under haystack from alfalfa, soil 0–5, 31.03.1972, specimen #S–101 (204), 1 }; item, under haystack, same data,
specimen #S–102 (208), 1 }; ibid., 27.03.1972, specimen #S–103 (197), 1 } (Sklyar) (SIZK).
Redescription. Female. Dorsal shield (fig. 3, 1) well sclerotized, broadly oval, with-
out lateral emarginations, with dark marginal border, smooth, with very slight striation
only on anterolateral margins; solenostomes 7 pairs (it, id, iv, il, isc, is, ic). Setae AD2, AD3,
AM2 are microchaetae (3–6 μm), AD4, PD4, PM1, PL3 are short (10–20 μm), AD1, AL1,
PL2 are moderately long (30–40 μm), the rest are elongated. Setae AM1, AL1–AL3, PL1–
PL2, PM3, and PM4 serrate. Of these, AL1 and AL3 serrate in the distal half, the rest along
the entire length of the seta. Seta AM1 longer than distance to theca AL1. Setae AL1 and
AL2 longer than the distance to the next setae. Seta AL3 more than 1.5 times and AL4 more
than twice as long as seta AL1. Seta AL3 located in common arc of setae AM1–AL1–AL3–
AL4. Seta PL1 1.5 times as long as PL3 and three times as long as PL4. Setae PM4 slightly
shorter than PM2. Perithremes almost reaching the techae of setae AD1. Ventral shields
strongly sclerotized. Ventrianal shield (fig. 3, 2) wide, roughly pentagonal, somewhat nar-
rowing towards posterior margin, often with shallow cuts at anterolateral corners, trans-
versely striated. The outlines of its lateral edges can be variable. The shield normally has
3 pairs of ventrianal setae. Sometimes one, rarely both PrA2 setae may be absent. Anal pores
distinct, widely spaced. Metapodal scutes small, anterior curved (fig. 3, 3). The posterior
end of the peritremal shield is narrow, curved, and pointed (fig. 3, 4). Setae PV elongated,
serrate. Chelicerae Df with 3 large distal teeth, Dm with 1 (fig. 3, 5). The spermatheca is rel-
atively small; the walls of the funnel from the massive sessile atrium pressed into it become
thinner towards the edges (fig. 3, 6). The legs look thin relative to the massive body. IV pair
of macrochaetes on leg: longest on basitarsus, much shorter on genu and tibia (fig. 3, 7).
Measurements. Lds 408, Wds 290; Lvas 130, Wvas 156, Lian 56; Ltar 152; length of
setae AD1 30; AD2 6; AD3 6; AD4 13; PD4 11; AM1 60; AM2 3; AL1 43; AL3 77; AL4 93;
ML 22; PL1 68; PL2 40; PL3 20; PM3 95; PM4 83; AS 32; PS 16; PV 72, MCh IV: ge 45, ti
34, ta 77.
Male is unknown.
Diagnosis . A. bregetovae (Abbasova, 1970) is distinguished from other species of this
genus described here by several pairs of finely serrated setae located along the periphery
of the dorsal shield (AM1, AL1, AL3, AL4, PL1, PL2, PM3, and PM4). In addition, it dif-
fers from the commonly encountered A. okanagensis (Chant) by the length of some dorsal
setae or by the ratio of their lengths. Thus, dorsal setae PL1 and PL2 in A. bregetovae are
2.5 times as long, and PL3 are 1.5 times as long as setae of the same name in A. okanagen-
sis; in the first species, PM3 setae equal to PM4 or only slightly shorter (PM3 95, PM4 83),
while in A. bregetovae, as in other species of the genus, PM3 (77 μm) is distinctly shorter
than PM4 (112 μm).
112 L. A. Kolodochka
Distribution, habitat , occurrence. Europe, Transcaucasia, Middle East. In
Ukraine: Steppe zone; under haystacks, in the nests of small rodents; rare.
Fig. 3. Amblyseiulus bregetovae (Abbasova, 1970) } (1–7): 1 — dorsal shield; 2 — ventral body surface; 3 —
metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — fragment of
leg IV.
1
5
3
4
2
7
6
113Predatory Mites of the Fauna of Ukraine: Redescriptions of the Species of Amblyseiella and Chelaseius…
Amblyseiulus jugortus (Athias-Henriot, 1966) (fi g. 4)
Amblyseius jugortus Athias-Henriot, 1966: 189; Karg, 1971: 202; Athias-Henriot, 1980: 7;
Proprioseiopsis jugortus: Moraes, de et al., 1986: 116; Karg, 1993: 175; Chant & McMurtry, 2007: 89; Denmark
& Evans, 2019: 74.
Mater ia l . Types. Holotype }: France: Corcelles-les-Monts, Cote d’Or, moss with Juniperus sp., 30–
03 1964, specimen Dijon N 814 [Laboratoire d’Acarologie de l’Éсоlе Pratique des Hautes Études, Paris] (not
examined; the description and fi gures are based on a non-type specimen from Ukraine).
Non–type. 14 specimens (13 }, 1 {). Ukraine: Poltava District, Lubny area, Zasullia village, meadow, litter,
01.08.1972, specimen #S–56/100 e, 2 {; idem, the same date, specimen #S–119/100 j, 1 {; Poltava Sity, env.,
meadow, soil 0-5, 24.08 1975, specimen #S–51/76b, 1 }; idem, litter under Picea sp., the same data: specimen
#S–128/78g, 1 }; specimen #S–129/78 d, 1 }; specimen #S–138/75p, 1 }; specimen #S–139/75r, 1 }; specimen
#S–142/75m, 1 };specimen #S–145/79p, 1 }; specimen #S–146/79r, 1 }; specimen #S–147/79s, 1 }; specimen
#S–150/79f, 1 }; specimen #S–151/79x, 1 } (Skliar) (SYSK).
Redescription. Female. Dorsal shield (fig. 4, 1) well sclerotized, smooth, with dark
marginal border, broadly oval, bearing 7 pairs of solenostomes (it, iv, id, isc, il, is, ic). Dorsal
scutellum setae AL4, PM3, PM4 thick, distinguished by greatest v length among other dor-
sal setae. Setae AD1, AM1, and AL1 are small, others short to minute. All setae spiky, except
for the rarely serrate PM3 and PM4. Seta AM1 shorter than distance from its theca to theca
of seta AL1. Seta AL1 more than twice as long as seta AL3, does not reach its theca. Seta AL3
markedly displaced toward axis of dorsal shield from common arc of setae AM1–AL1–AL4
and located on line connecting thecae of setae AL1–PM1. In other words, the setae of the
AD1 pair are moved away from the axial line of the dorsal shield, and the setae AM1 are
moved closer to it, as compared with the location of the same pairs of setae, common for
species of related genera. Seta AL1 (18–20 μm) 2.5–2.6 times as long as AL2 (7–8 μm). Seta
AL1 shorter than distance from its theca to theca AL2. Perithremes extend beyond the level
of the tecae of setae AD1.
Ventral shield somewhat wider than genital shield, sculptured in anterior third by
thin transverse lines, narrowing caudally, with straight or slightly concave lateral margins
(fig. 4, 2). Anal pores located between the thecae of PrA2 setae and almost in line with
them. Metapodal shields elongated; the posterior one is wide and 1.75 times as long as the
anterior one (fig. 4, 3). Posterior end of peritremal shield weakly curved (fig. 4, 4). Cheli-
cerae with 9 teeth on Df, and 2 on Dm (fig. 4, 5). Spermatheca small with thick walls and
short infundibulum, expands from atrium to sacculus; atrium large, asymmetric, immersed
in funnel base (fig. 4, 6).
Macroseta on leg IV long, thickened, pointed; macrosetae on tibia and basitarsus equal
in length, macroseta on tibia one third shorter (fig. 4, 7). Genu and tibia III, as well as genu
II with short macrosetae.
Measurements. Lds 376, Wds 270; Lvas 111, Wvas 90, Lian 37; Ltar 143; setae
length: AD1 28; AD2 5; AD3 5; AD4 7; PD4 7; AM1 27; AM2 6; AL1 18; AL3 7; AL4 89; PL1
9; PL2 9; PL3 10; PM1 8; PM3 135; PM4 180; AS 13; PS 6; PV 78; MCh IV: ge 80, ti 57, ta 60;
MCh III: ge 43, ti 28; MCh II: ge 21; MCh I: ge 25.
Male. Setae of pairs AD1 and AM1 are similar to those in female (setae of pair AD1
are spaced apart, while pairs of AM1 are spaced closer together). Ventrianal shield with 3
pairs of preanal setae and round anal pores situated practically on the line of the tecae of
PrA2 setae. Spermatodactyl L-shaped. Lds — 280.
Distribution, habitat , occurrence. Europe (France, Island, Netherlands, Nor-
way, Russia — Arkhangelsk). In Ukraine: this species is known only in parks and the vicin-
ity of Poltava City (meadow, litter under Picea, soil); rare (Kolodochka & Skliar, 1981).
114 L. A. Kolodochka
Fig. 4. Amblyseiulus jugortus (Athias-Henriot, 1966) (fi g. 4) } (1–7), { (8, 9): 1 — dorsal shield; 2 — ventral
body surface; 3 — metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca;
7 — fragment of leg IV; 8 — ventrianal shield; 9 — chelicera with spermatodactyl.
1
2
9
6
3
5
7
4
8
115Predatory Mites of the Fauna of Ukraine: Redescriptions of the Species of Amblyseiella and Chelaseius…
Diagnosis . This species is morologically close to Amblyseius messor, which also has
similar long setae AL4, PM3, PM4 on the dorsal shield. These species are easily distin-
guished by the ratio of the lengths of two pairs of dorsal setae: in A. messor the seta AL1 is
2 times as long as AL3, and in A. jugortus it is at least 2.5 times longer then it. In A. messor,
the funnel walls of the spermatheca are comparatively thinner and the semi-cilindric fun-
nel itself is narrow, while in A. jugortus, the funnel walls are thick and the conic funnel is
short and wide.
Amblyseius jugortus is also similar to A. ovicinctus (see lower) but its dorsal setae AL4
86, PM3 135, PM4 180, and PV 78 μm are distinctly longer than those of A. ovicinctus (78,
110, 130, 57, respectively). The macrosetae on the legs of these two species also differ not
only in their absolute length, but also in the relative length of the macrosetae of the same
name (see Measurements in both species). The infundibulum of A. jugortus is short and
wide with a thick wall, while in A. ovicinctus it is longer and it wall are thinner. A compari-
son of these taxonomically significant for species identification of phytoseiids details of the
internal structure (fig. 4, 6 and fig. 8, 6) finally convinces of the species independence of
these forms.
Amblyseiulus mauiensis (Prasad, 1968) (fi g. 5)
Amblyseius mauiensis Prasad, 1968: 1519; Ghiliarov et al., 1977: 240;
Amblyseiulus mauiensis: Kolodochka, 1981: 21;
Proprioseiopsis mauiensis: Moraes, de et al., 1986: 117; Karg, 1993: 177; Chant & McMurtry, 2007: 89.
Amblyseius musaevi Abbasova, 1970 (junior synonym of Amblyseius mauiensis Prasad, 1968, according to
Wainstein, 1979: 142).
Mater ia l . Type. Holotype }: Hawaii, Maui, Haleakala road, on bamboo leaves (Bambusa sp.), [No. of
the specimen and data unknown] [B. P. Bishop Museum, Honolulu, Hawaii] (not examined; description made
on non-type specimen from Ukraine).
Non-type. 3 specimens (3 }). Ukraine: Autonomous Republic of Crimea, Main mountain Range,
Nikitskaya yayla, 1400 m a. s. l., tract Krasnyi Kamen, Verbascum sp., 15.06.1976, specimen #2053a, 1 },
44°30'55.0" N 34°05'47.0" E; ibid., Knautia arvensis, 21.06. 1976, specimen #2154, 1 } (Kolodochka); Kharkiv
Region, Zmievsk District, Mokhnach village, forest on the river bank, fi eld mouse (combing mouse fur), 27.07
1979, specimen # P–513 (112), 1 }, 49°42'25.0" N 36°21'24.0" E (Naglov) (SIZK).
Redescription. Female. Dorsal shield (fig. 5, 1) well sclerotized, with a dark margin-
al border on the sides, broadly oval, without lateral notches, smooth in the central part of the
anterior half of the shield, obliquely striated along the lateral margins, covered with reticulate
sculpture in the posterior half. There are 6 pairs of dorsal solenostomes (it, iv, isc, il, is, ic; miss-
ing id). Solenostomes ic and ic are the largest, the rest are noticeably smaller. The solenostome il
displaced to the edge of the shield towards the seta PS. Dorsal setae thin, pointed, smooth (except
for slightly serrate PM3 and PM4). Setae AM4, PM3, PM4 nearly the same length and longest on
dorsum, others short, more or less equal in size. Seta AM1 does not reach the theca AL1. Seta AL3
located in common arc of setae AM1–AL1–AL3–AL4. Setae of row PL almost equal in length
(differences are 2–3 μ). Perithremes reach the techae of setae AD1. The shields of the ventral side
of the body are well sclerotized. Ventrianal shield (fig. 5, 2) wide, wider than genital one, rounded
pentagonal, narrowing caudally, entirely covered with reticulate sculpture; anal pores distinct, not
close together. Metasternal shields elongate-oval, anterior scutellum smaller than posterior one
(fig. 5, 3). Posterior part of peritremal shield slightly curved, pointed at end (fig. 5, 4). There are
3 teeth on Df and 1 on Dm (fig. 5, 5). Spermatheca with bell-shaped funnel and peak; the massive
sessile atrium is pressed into the funnel (fig. 5, 6). Leg IV has 3 macrochaetes: genu, tibia, and
basitarsus, of which the latter is the longest (fig. 6, 7). There are no macrochaetes on the other legs.
116 L. A. Kolodochka
Fig. 5. Amblyseiulus mauiensis (Prasad, 1968) } (1–7): 1 — dorsal shield; 2 — ventral body surface; 3 —
metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — fragment of
leg IV.
Measurements. Lds 447, Wds 305; Lvas 140, Wvas 143, Lian 58; Lt 145; setae length:
AD1 29; AD2 9; AD3 11; AD4 14; PD4 14; AM1 41; AM2 9; AL1 23; AL3 15; AL4 70; PL1 27; PL2
25; PL3 28; PM1 20; PM3 86; PM4 90; AS 27; PS 22; PV 56; MCh IV: ge 50, ti 40, ta 79.
Male unknown.
1
5
2
3
6
4
7
117Predatory Mites of the Fauna of Ukraine: Redescriptions of the Species of Amblyseiella and Chelaseius…
Diagnosis . A. mauiensis differs from species of the genus Amblyseiulus known to
the fauna of Ukraine in the reticulate sculpture of all idiosome shields; by six, not seven,
pairs of dorsal solenostomes; by unusual displacement of the solenostome il to the edge of
the shield. It is similar to A. sororculus (Wainstein, I960), which is often found in Ukraine,
from which it is easily distinguished by wide genital and ventrianal shields, a visor on the
funnel of the spermatheca, while in A. sororculus the dorsal shield is smooth, the ventral
shields are of moderate width, the funnel of the spermatheca is without a visor.
Distribution, habitat , occurrence. Europe (Ukraine), Transcaucasia (Azerbai-
jan), Far East of Russia (Primorsky Territory), (USA (Hawaii). In Ukraine: Steppe zone,
Crimea; herbs, on small rodents; rare.
Note. Description, morphometry, and illustrations are given for non-typу specimens
from the Crimea after comparing them with illustrations of this species in the publications
of various authors.
Amblyseiulus messor (Wainstein, 1960) (fi g. 6)
Typhlodromus messor Wainstein, 1960: 688.
Amblyseius messor: Athias-Henriot, 1961: 426; Athias-Henriot, 1966: 190; Karg, 1971: 200; Livschitz and
Kuznetzov, 1972; 21: Papadoulis and Emmanouel, 1990: 14; Papadoulis, 1993: 92;
Amblyseius (Amblyseius) messor: Ehara, 1966: 22; Arutunjan, 1977: 34; Ueckermann & Loots, 1988: 66;
Amblyseius messor: Ghiliarov et al., 1977: 238;
Proprioseiopsis (Amblyseiulus) messor: Karg, 1989: 212;
Proprioseiopsis messor: Moraes, de et al., 1986: 117; Karg, 1993: 176; Moraes et al., 2004: 180; Chant & McMurtry,
2005: 15; Chant & McMurtry, 2007: 89.
Amblyseius obtusus (Koch): Womersley, 1954: 188 (missidentifi cation) (note in: Papadoulis et al., 2009: 69).
Mater ia l . Type. Syntypes 23 }, eastern Georgia, semi-steppe, grass, June 1953 and May 1955.
Non-type. 25 specimens (24 }, 1 {). Ukraine: Autonomous Republic of Crimea (Southern coast: Yalta,
Main mountain range and Karadag), Donetsk, Odesa, Poltava, Kharkiv Regions.
Redescription. Female. Dorsal shield (fig. 6, 1) strongly sclerotized, with dark
marginal border, smooth, broadly oval, without lateral emarginations; 7 pairs of solenos-
tomes (it, iv, id, isc, il, is, ic). Dorsal setae sharp, smooth, and vary considerably in length,
PM3 and PM4 slightly serrate. Seta PM4 1.5 times as long as PM3 and exceeds distance
between theca of PM4 pair. Seta AL4 shorter than PM3 and PM4, others much shorter up
to miniature 3–5 μm. Seta AL1 1.5 times shorter than AM1 and 2 times as long as notice-
ably thinner AL3 (length and arrangement of setae AL1 and AL3 may vary slightly). Seta
AL3 is displaced toward the axis of the shield from the commonly observed common arc
of setae AL (AM1–AL1–AL3–AL4). Peritremes reach the theca of setae AD1. The shields
on the ventral side of the body are also strongly sclerotized. Ventrianal shield (fig. 6, 2)
somewhat wider than genital shield, rounded pentagonal, sometimes rather triangular with
rounded margins and concave anterior margin, narrowing caudally, transversely striated;
anal pores round, distinct, spaced. The posterior metapodal shield is wide, asymmetrical,
larger than the elongated anterior one (fig. 6, 3). Posterior part of peritremal shield narrow,
curved, pointed with terminal pore (fig. 6, 4). There are 4 teeth on Df and 1 on Dm (fig. 6, 5).
Spermatheca with thick-walled bell-shaped funnel and massive sessile atrium sunk into
the base of the funnel (fig. 6, 6). Leg IV has 3 long macrochaetes: nearly equal on genu and
basitarsus, somewhat shorter on tibia (figs 6, 7). Genu III and II with short macrosetae.
Measurements. Lds 400, Wds 250; Lvas 115, Wvas 110, Lian 52; Lt 140; setae length:
AD1 30; AD2 3; AD3 3; AD4 5; PD4 6 9; AM1 48; AM2 5; AL1 30; AL3 15; AL4 93; PL1 8;
118 L. A. Kolodochka
Fig. 6. Amblyseiulus messor (Wainstein, 1960) } (1–7), { (8, 9): 1 — dorsal shield; 2 — ventral body surface;
3 — metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — fragment
of leg IV; 8 — ventrianal shield; 9 — chelicera with spermatodactyl.
PL2 9; PL3 16; PM1 7; PM3 120; PM4 188; AS 20; PS 12; PV 86; MCh IV: ge 72, ti 57, ta 70,
MCh III: ge 41; MCh II: ge 32.
Male. Preanal setae 3 pairs; anal pores distinct, spaced (fig. 6, 8). Spermatodactyl
curved (fig. 6, 9). Lds – 340.
1
6
9
8
4 7
3
2
5
119Predatory Mites of the Fauna of Ukraine: Redescriptions of the Species of Amblyseiella and Chelaseius…
Distribution, habitat , occurrence. Europe, Caucasus, Transcaucasia; Middle
East, Central Asia, America; Africa, Canary Islands; Australia, New Zealand, Tasmania Is-
land. In Ukraine: Steppe zone, Wood-and-Steppe zone, Crimea — grasses, litter, on wheat
roots, stump dust, on small rodents and in their nests; ordinary.
Diagnosis . A. messor is distinguished from species of the genus having long dorsal
setae AL4, PL3 and PL4 in several features: seta AL1 reaches theca AL3; seta PL3 equal to
distance from its theca to theca PM4; Df with 4 teeth, Dm with 1; funnel of spermatheca
with moderately thickened wall and narrow in general, sharp expands towards the sacculus
in the last third.
Note. There were 23 females of Amblyseiulus messor in collection by labeled as syn-
types of this species according to information in original description. The revision revealed
15 females are present now in the collection by B. A. Wainstein (SIZK), which informed in
original description that material was taken in East Georgia. The location of the rest speci-
mens is unknown.
Amblyseiulus okanagensis Muma, 1961 (fi g. 7)
Typhlodromus okanagensis: Chant, 1957: 293;
Typhlodromus okanagensis levis: Wainstein, 1960: 686; Livschitz & Kuznetsov: 1972: 22;
Amblyseiulus okanagensis: Hirschmann, 1962: 7;
Amblyseiulus okanagensis: Karg, 1971, 202;
Amblyseius okanagensis: Giliarov et al., 1977: 240;
Amblyseius (Amblyseius) okanagensis: Arutunjan, 1977: 34;
Amblyseius (Amblyseiulus) okanagensis: Kolodochka, 1978: 43;
Proprioseiopsis okanagensis: Moraes, de et al., 1986: 120; Miedema, 1987: 11; Karg, 1993: 176; Chant &
McMurtry, 2007: 89.
Mater ia l . Types. Holotype }, Canada, British Columbia, Oliver, on peach leaves, N. H. A., specimen
#6542 (CNC) (examined).
Non–types. 97 specimen (80 }, 17 {). Ukraine: Autonomouse Republic of Crimea, Cherkasy, Chernihiv,
Kyiv, Kherson, Luhansk, Mykolaiv, Poltava, Rivne, Transcarpathia, Vinnitsa, Zhytomyr Regions, 97 specimens
(SIZK).
Redescription. Female. Dorsal shield (fig. 7, 1) strongly sclerotized, with dark
marginal border, smooth, broadly oval, without lateral emarginations; solenostomes 7 pairs
(it, iv, id, isc, il, is, ic), of which ic are the largest. Setae AM1, AL1, AL3 reach the thecae
of next setae. Seta AL3 markedly shifted toward axis of shield from common arc of setae
AM1–AL1–AL3–AL4. Seta PL1 more than twice as long as setae PL2 and PL3. Setae PM3,
PM4 serrate, others smooth. Perithremes reach the thecae of setae AD1. Shields on ventral
side of body heavily sclerotized. Ventrianal shield (fig. 7, 2) transversely striated, wider
than genital shield, narrowing caudally, bearing 3 pairs of setae; anal pores distinct, spaced.
Metapodal shields elongate, posterior one not more than twice as long as anterior (fig. 7, 3).
Posterior part of peritremal shield narrow, widening towards pointed end (fig. 7, 4). Four
teeth on Df, 1 on Dm (fig. 7, 5). Spermatheca (fig. 7, 6) with a thick-walled bell-shaped fun-
nel and a massive sessile atrium, as if pressed into the funnel. Leg IV has 3 macrosetae: on
genu, tibia, and basitarsus, the last of which is longer than the others (fig. 7, 7). Genu III
and II with short macrosetae.
Measurements. Lds 408, Wds 265; Lvas 135, Wvas 127, Lian 52; Ltar 138; setae
length: AD1 29; AD2 7; AD3 8; AD4 15; PD4 10; AM1 52; AM2 8; AL1 37; AL3 64; AL4 84;
PL1 40; PL2 14; PL3 14; PM1 23; PM3 77; PM4 112; AS 36; PS 21; PV 60; MCh IV: ge 55, ti
47, ta 68; MCh III: ge 29; MCh II: ge 27.
120 L. A. Kolodochka
Fig. 7. Amblyseiulus okanagensis (Chant, 1957) } (1–7), { (8, 9): 1 — dorsal shield; 2 — ventral body surface;
3 — metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — fragment
of leg IV; 8 — ventrianal shield; 9 — chelicera with spermatodactyl.
1
2
7
9
8
4
5
3
6
121Predatory Mites of the Fauna of Ukraine: Redescriptions of the Species of Amblyseiella and Chelaseius…
Male. Preanal setae 3 pairs; anal pores distinct, spaced (fig. 7, 7). Spermatodactyl
curved (fig. 7, 8). Lds — 310.
Distribution, habitat , occurrence. Europe, Transcaucasia, Near East, North
America, Far East. In Ukraine: Wood-and-Steppe, Steppe zones, Polissia, Transcarpathia,
Crimea (southern slope of the Main Range of Mountains, Yayla; Cape Kazantip): herba-
ceous plants of the lower tier, litter, rodent nests, soil; by chance — on trees; ordinary.
Diagnosis . A. okanagensis differs from the similar to it A. sororculus in relatevely
longer dorsal setae AL1, AL3, and PL1, as well as by a different ratio of their lengths (in
A. sororculus AL1 twice shorter as AL3, and in A. okanagensis. AL1 is 1.5 times as longer
as AL3). While seta PL1 nearly triple longer then PL2 and PL3 in A. okanagensis, and in
A. sororculus thees three setae are equal. In addition, seta AL3 in A. sororculus is near four
times shorter than the distance to the theca of seta AL4, while seta AL3 in A. okanagensis
almost equal of seta AL4. In the female A. sororculus, the ventrianal shield is narrower than
in A. okanagensis, and the males of thees species are well distinguished by the structure of
the spermatodactyl.
Note. The description and drawings of the female and male are based on non-type ma-
terial from Kyiv Region; the morphometry is given according to the re-examined holotype;
the male is depicted based on non-type material from Ukraine. During the re-examination
of the holotype, a discrepancy in a number of characters was noticed between the holotype
and the material from our collection. Thus, setae AL4, PL1, PM2, and PM3 in mites from
Ukraine were shorter than similar setae in the holotype by 16, 17, 19, and 25 %, respectively.
In addition, the number of teeth on Df in the holotype it are 6, while there are 3–4 teeth in
non-type specimen. Other characters were not in doubt. Interestingly, the dimensions of
the evasive setae of the studied specimens practically coincide with the dimensions of the
same-named setae of the species Typhlodromus okanagensis levis Wainstein, 1960 from Ka-
zakhstan studied by the author from the holotype, which was earlier recognized as a junior
synonym of A. okanagensis Chant (Karg, 1971). At the same time, the observed discrepancy
can be attributed to population differences within the same species. It is this point of view
that is proposed to be accepted before conducting comparative studies on samples that are
equivalent in number of individuals.
Amblyseiulus ovicinctus (Athias-Henriot, 1961) (fi g. 8)
Amblyseius ovicinctus Athias-Henriot, 1961: 421; Wainstein & Shcherbak, 1972: 43;
Typhlodromus ovicinctus: Hirschmann, 1962: 4, Taf. 6, fi g. 114;
Amblyseius ovicinctus: Athias-Henriot, 1966: 190;
Amblyseius ovicinctus: Giliarov et al., 1977: 238.
Proprioseiopsis ovicinctus: Moraes, de et al., 1986: 121; Karg, 1993: 175; Chant & McMurtry, 2007: 89.
Mater ia l . Type. “Holotype }, Iberian Peninsula, Sierra de Estrella (N-<Northern> Portugal), Gesiebe
an Quelle uber der Strasse von Maitengas am Hang des Gebirges entland, (No. of the specimen unknown),
22.07 1955" (cit.: Athias-Henriot, 1961: 421) (not examined; description made on single non-type specimen
from Ukraine).
Non-type. Ukraine: Kyiv Region, Liutezh, mixed forest, dry moss with sod, 04.06.1968, specimen #3550–
15(4), 1 }, 50°40'00.0" N, 32°24'02.0" E (G. Shcherbak) (in B. A. Wainstein' collection, SYZK).
Redescription. Female. Dorsal shield (fig. 1, 1) well sclerotized, oval, without
lateral emarginations, smooth, with dark lateral border; solenostomes 7 pairs (it, iv, id,
isc, il, is, ic). Dorsal setae sharp, smooth, only PM3 and PM4 with few serrations. Setae
AL4, PM3, and PM4 long, thickened; AD1, AM1 and AL1 are small, the rest are short
and microsetae. Seta AM1 shorter than distance from its theca to theca of seta AL1. Seta
122 L. A. Kolodochka
Fig. 8. Amblyseiulus ovicinctus (Athias-Henriot, 1961) } (1–7): 1 — dorsal shield; 2 — ventral body surface;
3 — metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — fragment
of leg IV.
1
6
4
3
2
7
5
123Predatory Mites of the Fauna of Ukraine: Redescriptions of the Species of Amblyseiella and Chelaseius…
AL1 more than twice as long as seta AL3 and shorter than distance to its theca. Seta AL3
strongly displaced toward axis of dorsal shield from common arc of setae AM1–AL1–AL4
and located on line joining the thecae of setae AL1–AM2. Thus, the setae of the AD1 pair
are moved away from the axial line of the dorsal shield, while the setae AM1 are moved
closer to it, as compared with the common location of the same pairs of setae in species
of related genera. The peritremes extend slightly beyond the theca AD1. Ventrianal shield
(fig. 8, 2) with slight transverse sculpture in anterior half, wider than genital shield, narrow-
ing caudally, lateral margins convex, anterior margin concave; anal pores spaced, round,
distinct, close to the thecae of PrA2 setae. Metapodal shields elongated; posterior shield
wider than anterior one and 1, 6 times as long as it (fig. 8, 3). The spermatheca is medium in
size, the walls of the short conical infundibulum are slightly thickened; atrium sessile, large
(fig. 8, 4). Df chelicera with 9 teeth (2 distal, 7 others in one medial row), Dm with 2 teeth
(fig. 8, 5). The posterior end of the peritremal shield is sickle-shaped, pointed (fig. 8, 6). Leg
IV has 3 thick macrosetae: on the genu, tibia, and basitarsus, the last of which is the longest
(fig. 8, 7). Leg III with a short macrosetae at genu and a longer one at tibia. Leg II with a
short macrochaete at genu.
Measurements. Lds 365, Wds 270; Lvas 102, Wvas 100, Lian 37; Ltar 118; setae
length: AD1 23; AD2 4; AD3 4; AD4 6; PD4 8, AM1 37; AM2 5; AL1 18; AL3 7; AL4 78; PL1
7; PL2 8; PL3 10; PM1 6; PM3 110; PM4 130; AS 12; PS 4; PV 54; MCh IV: ge 75, ti 60, ta 53;
MCh III: ge 32, ti 21; MCh II: ge 27; MCh I: ge 22.
Male. The original description of the male consists of note about free ventrianal shield,
T-shaped spermatodactyl and does not contain morphometry and drawings. In the speci-
men from Ukraine studied by the author, the male was not found (please see Note below).
Distribution, habitat , occurrence. Europe (Portugal, Russia; Ukraine). In
Ukraine: moss and turf in pine and mixed forest (Kyiv Region); rare.
Diagnosis . A. ovicinctus is similar to A. messor in having long and thickened dorsal
setae AL4, PM3, and PM4, contrasting in length with the rest of setae on dorsal shield. The
difference between the two species is that the setae PM4 in A. ovicinctus near 1.5 times
shorter than those in A. messor (130 against 188 μm) and do not exceed half the width of
the dorsal shield at the level of setae PM1. In addition, the number of teeth on the fingers
of chelicerae in these species is also different (A. ovicinctus has 9 teeth on Df and 2 on Dm,
while A. messor has 3 teeth on Df and 1 on Dm).
Amblyseiulus sororculus (Wainstein, I960) (fi g. 9)
Typhlodromus sororculus Wainstein, I960: 685;
Amblyseius sororculus: Athias-Henriot, 1966: 193;
Amblyseius sororculus: Abbasova, 1972: 16;
Amblyseius (Amblyseius) sororculus: Arutunjan, 1977: 34;
Amblyseius sororculus: Giliarov, 1977: 238;
Amblyseiulus sororculus: Karg, 1971: 202;
Amblyseius (Amblyseiulus) sororculus: Kolodochka, 1981: 45;
Proprioseiopsis sororculus: Moraes, de et al., 1986: 124; Karg, 1993: 177; Chant & McMurtry, 2007: 89; Denmark
& Evans, 2019: 78.
Amblyseiulus levani Gomelauri, 1988 (synonymy by Abbasova, 1972: 18).
Mater ia l . Types. Syntypes: 1 }, Russia, Perm Region, in nests of mouse-like rodent Microtus arvalis;
1 }, 10.04.1951, specimen #N1312 (Ланге); Moscow Region, specimen #2134, 1 }, 1956 (SIZK, in collection
B. A. Wainstein) (examined).
Non-type. 17 specimens (16 }, 1 {). Ukraine, Crimean Autonomous Republic, Karadag, N slope, soil
near roots of Pinus sp., 09.07.1975, specimen #356/1–2234, 1 }, 44°53'12.0" N 35°16'44.0" E (G. Shcherbak.);
Cape Kazantip, north coast, not far from the lighthouse, bush, Crataegus sp., 30.05.1979, specimen #3411,
124 L. A. Kolodochka
Fig. 9. Amblyseiulus sororculus (Wainstein, I960) } (1–7), { (8, 9): 1 — dorsal shield; 2 — ventral body surface;
3 — metapodal plates; 4 — posterior part of peritremal schield; 5 — chelicera; 6 — spermatheca; 7 — fragment
of leg IV; 8 — ventrianal shield; 9 — chelicera with spermatodactyl.
1 }, 45°28'10.0" N 35°50'35.0" E; Arabat Spit, steppe area, env. Volok village, Echium vulgare, 06.06.1979,
specimen #3467, 5 }, 45°45'00.0" N 34°59'00.0" E (Kolodochka); Donetsk Region, Volodarka District,
Nazarivka village, Stone Graves reserve, meadow, soil 0-5, 02.09.1973, specimen #S–74/239, 1 }, 47°19'31.0"
N 37°08'09.0" E; Boykivsk District, Khomutovska Steppe reserve, on a forest mouse, 19.07.1968, specimen
#S–75/408, 1 }, ,47°24'55.0" N 38°03' 7.0" E; idem, nest of a forest mouse, 28.11.1967, specimen #S–81/51c,
1 2 4
6
3
9 8
5
7
125Predatory Mites of the Fauna of Ukraine: Redescriptions of the Species of Amblyseiella and Chelaseius…
1 }; idem, 07.07.1968, specimen #S–94/172, 1 }; , idem, nest of Microtus arvalis, 05.10.1967, specimen #S–
164/14, 1 }; Zaporozhye Region, Novonikolayevka town, litter, meadow, 24.09.1973, specimen #S–95/5b, 1 },
47°58'34.0" N 35°54'20.0" E; Vasiliev District, Sofi evka village, soil 0-5, Steppe, 24.09.1973, specimen #S–77/35,
1 }, 47°24'37.0" N 35°17'05.0" E; Poltava City, litter under Picea sp., 28.09.1975, specimen #S–120/79g, 1 },
49°36'42.0" N 34°36'48.0" E; idem, the same data, specimen #S–122/79j, 1 {, (Skliar); Kharkiv Region, Izium
District, Komarovka village, on Microtus rossiaemeridionalis, 10.04 1968, specimen #S–509/38, 1 }, 49°16'35.0"
N 37°15'44.0" E (Naglov) (SIZK).
Redescription. Female. Dorsal shield (fig. 9, 1) smooth, strongly sclerotized, with
dark marginal border, solenostomes 7 pairs (it, iv, id, isc, il, is, ic). Dorsal setae fine, sharp,
smooth, except for slightly thickened and very weakly serrate PM3 and PM4. Setae AL1,
PM1, and PS 1.5–2 times, and AL1 and AS 2.5–3 times as long as very short AD2–AD4,
PD4, AM2, and PL1–PL3. Seta AL3 markedly shifted toward axis of shield from common
arc of setae AM1–AL1–AL4. Peritremes nearly reaches the thecae of setae AD1. Ventrianal
shield (fig. 8, 2) finely transversely striated; anal pores are large, round, widely spaced, often
asymmetrically placed (one of the pores is displaced caudally relative to the other), which
noted in the original description, but is not always maintained on a sufficiently representa-
tive sample. Metapodal shields elongated, posterior one not less than 2.4 times as long as
anterior (fig. 9, 3). The posterior part of the peritremal shield is very narrow, crescent-
shaped (fig. 9, 4). There are 4 teeth on Df of the chelicerae, and 1 tooth on Dm (fig. 9, 5).
The funnel walls of the spermatheca are thickened, the atrium is large and merged with the
base of the funnel (fig. 9, 6). On leg IV there are elongated macrochaetes: on tibia shorter
than others (fig. 9, 7), on maple and tibia of leg III along a short macrochaete.
Measurements. Lds 400, Wds 275; Lvas 127, Wvas 110; Lian 54; L tar 130; setae
length: AD1 22; AD2 3; AD3 3; AD4 9; PD4 9; AM1 30; AM2 3; AL1 18; AL3 9; AL4 54;
PM1 13; PL1 9; PL2 9; PL3 9; PM3 68; PM4 79; AS 18; PS 14; PV 54; MCh IV: ge 56, ti 43,
ta 60, MCh III: ti 25, ge 21.
Male. Preanal setae 3 pairs; anal pores small, round, spaced apart (fig. 9, 6). The sper-
matodactyl is large, L-shaped (fig. 9, 7).
Diagnosis . A. sororculus differs from similar A. okanagensis in short dorsal setae AL1
and AL3, as well as in a different ratio of their lengths (in A. sororculus AL1 is 2 times as
long as AL3, but in A. okanagensis AL1 is 1.5 times as short as AL3). In addition, seta AL3 in
A. sororculus is four times shorter than the distance to the theca of seta AL4, while seta AL3
in A. okanagensis almost equal of seta AL4. In the female A. sororculus, the ventrianal shield
is narrower than in A. okanagensis, and the males of thees species are well distinguished by
the structure of the spermatodactyl.
Distribution, habitat , occurrence. Europe, Transcaucasia. In Ukraine: Wood–
and-Steppe zone, and Steppe zone; shrubs, herbs, grasses, litter, soil; on small rodents and
in their nests; ordinary.
Key to species of three phytoseiid genera of Ukrainian fauna
1. Dorsal setae of PL3 pair absent; ventrianal shield with 1 pair of preanal setae (PrA2). ..............................
Amblyseiella Muma (one speceis known in Ukraine — A. antonii Kolodochka & Omeri, 2010).
— Dorsal setae of PL3 pair present; ventrianal shield with 3 pair of preanal setae (PrA1, PrA2, V2) ........ 2
2. Dorsal setae PD2 pair absent. ........................................................................ Chelaseius Muma & Denmark
(one speceis known in Ukraine — Ch. valliculosus (Pontoseius) Kolodochka, 1987).
— Dorsal setae PD2 pair absent. ...................................................................................... Amblyseiulus Muma 3
3. Six pairs of solenostomes on dorsal shield (id pair absent); solenostome il shift ed to edge of dorsal
shield. ............................................................................................................................... A. mauiensis (Prasad)
— Seven pairs of solenostomes present on dorsal shield; solenostome il is in usual position for species of
the family ............................................................................................................................................................. 4
126 L. A. Kolodochka
4. Th e length of seta PM4 is equal to the distance between the thecae of setae of PM3 pair. ...................... 5
— Seta PM4 1.2 times shorter than the distance between the thecae of setae of PM3 pair. ......................... 7
5. Seta AL1 equal to or longer than the distance from its own theca to theca AL3; seta PL3 equal to distance
from its theca to theca PM4; Df with 4 teeth, Dm with 1; funnel of spermateca as a whole is narrow, with
a moderately thickened wall. ......................................................................................... A. messor (Wanstein)
— Seta AL1 shorter than distance to theca AL3; seta PL3 2 times shorter than distance from its theca to
theca PM4; Df with 9 teeth, Dm with 2; funnel short, widly conical with thick wall ............................... 6
6. Wall of spermateca funnel signifi cantly thickened .......................................... A. jugortus (Atias-Henriot)
— Wall of spermateca funnel moderately thickened ......................................... A. ovicinctus (Atias-Henriot)
7. Many dorsal setae in lateral row weakly serrated (AM1, AL1, AL3, AL4, PL1, PL2, PM2, PM3) ..............
.......................................................................................................................................A. bregetovae (Abbasova)
— All dorsal setae smooth, except for weakly serrated setae of pairs PM3 and PM4 .................................... 8
8. Setae AM1, AL1, AL3 longer than the distance from their own tecae to the tecae of subsequent
setae ................................................................................................................................ A. okanagensis (Chant)
— Setae AM1, AL1, AL3 shorter than distance from their own tecae to tecae of subsequent setae. ..............
...................................................................................................................................... A. sororculus (Wainstein)
Acknowledgments
Th is study was funded for I. I. Schmalhausen Institute of Zoology of the National Academy of Sciences of
Ukraine (State Registration Number of the work: 0116U003015, II-51-21) by the National Academy of Sciences
of Ukraine. Th e type material for this study was obtained by author with the kind assistance of Professor
D. A. Chant and Dr. Eiko Shaul (Canadian National Collection, Toronto, Canada), for which the author once
again expresses his gratitude.
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1–567.
Received 22 August 2023
Accepted 22 February 2024
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| id | oai:ojs.akademperiodyka.org.ua:article-540 |
| institution | Zoodiversity |
| issn | 2707-7268 |
| keywords_txt_mv | |
| language | English |
| last_indexed | 2026-08-21T01:01:36Z |
| publishDate | 2024 |
| publisher | Publishing House "Akademperiodyka" of the National Academy of Sciences of Ukraine |
| record_format | ojs |
| resource_txt_mv | ojsakademperiodykaorgua/55/7a65db863a8638c62c47d7546c4a3955.pdf |
| spelling | oai:ojs.akademperiodyka.org.ua:article-5402026-08-20T12:36:49Z Redescriptions of the Species of Amblyseiella and Chelaseius, with Resurrection of the Genus Status for Amblyseiulus Kolodochka , L. A. phytoseiid mites taxonomy diagnoses new record resurrection of generic status The article continues the studies of the fauna of phytoseiid mites in Ukraine, the results of which have been partly published by the author recently and contains a review of the genera Amblyseiulus, Amblyseiella, and Chelaseius. A detailed morpho-functional rationale for the resurrection of the genus Amblyseiulus Muma, 1961 as a part of the subtribe Proprioseiopsina Chant &amp; McMurtry is provided. In this study, seven species of this genus were identified, one of which, Amblyseiulus jugortus (Athias-Henriot, 1966), is recorded for the first time in the fauna of Ukraine. The genus Amblyseiella Muma, 1955 is represented in Ukraine by the species A. antonii Kolodochka &amp; Omeri, 2010, the second of two species of this genus known in the world. The species Chelaseius (Pontoseius) valliculosus Kolodochka, 1987 is also the only representative of this genus and subgenus in Ukraine. Based on the results of the study, comprehensive illustrated redescriptions of each of the taxa are given, morphological and morphometric data, information on the distribution of genera and species in the world and Ukraine, mite habitats, depositories of type specimens, occurrence, abundance and keys for identification of genera and species. Publishing House "Akademperiodyka" of the National Academy of Sciences of Ukraine 2024-02-21 Article Article application/pdf https://ojs.akademperiodyka.org.ua/index.php/Zoodiversity/article/view/540 10.15407/zoo2024.02.103 Zoodiversity; Vol. 58 No. 2 (2024): Zoodiversity Zoodiversity (Vestnik Zoologii); Том 58 № 2 (2024): Zoodiversity 2707-7268 2707-725X 10.15407/zoo2024.02 en https://ojs.akademperiodyka.org.ua/index.php/Zoodiversity/article/view/540/259 Copyright (c) 2024 L. A. Kolodochka |
| spellingShingle | Kolodochka , L. A. Redescriptions of the Species of Amblyseiella and Chelaseius, with Resurrection of the Genus Status for Amblyseiulus |
| title | Redescriptions of the Species of Amblyseiella and Chelaseius, with Resurrection of the Genus Status for Amblyseiulus |
| title_full | Redescriptions of the Species of Amblyseiella and Chelaseius, with Resurrection of the Genus Status for Amblyseiulus |
| title_fullStr | Redescriptions of the Species of Amblyseiella and Chelaseius, with Resurrection of the Genus Status for Amblyseiulus |
| title_full_unstemmed | Redescriptions of the Species of Amblyseiella and Chelaseius, with Resurrection of the Genus Status for Amblyseiulus |
| title_short | Redescriptions of the Species of Amblyseiella and Chelaseius, with Resurrection of the Genus Status for Amblyseiulus |
| title_sort | redescriptions of the species of amblyseiella and chelaseius, with resurrection of the genus status for amblyseiulus |
| topic_facet | phytoseiid mites taxonomy diagnoses new record resurrection of generic status |
| url | https://ojs.akademperiodyka.org.ua/index.php/Zoodiversity/article/view/540 |
| work_keys_str_mv | AT kolodochkala redescriptionsofthespeciesofamblyseiellaandchelaseiuswithresurrectionofthegenusstatusforamblyseiulus |