Morphological Characteristics of Male Genitalia in Some Species of the Genus Eurytoma (Eurytomidae, Hymenoptera)

Based on the analysis of morphological characteristics of related species of the genus Eurytoma, several groups of cryptic species poorly distinguishing by external morphology, but clearly confined to certain hosts are shown to have morphological differences of male genitalia that are highly species...

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Бібліографічні деталі
Опубліковано в: :Вестник зоологии
Дата:2010
Автор: Klymenko, S.I.
Формат: Стаття
Мова:Англійська
Опубліковано: Інститут зоології ім. І.І. Шмальгаузена НАН України 2010
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Онлайн доступ:https://nasplib.isofts.kiev.ua/handle/123456789/65724
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Цитувати:Morphological Characteristics of Male Genitalia in Some Species of the Genus Eurytoma (Eurytomidae, Hymenoptera) / S.I. Klymenko // Вестник зоологии. — 2010. — Т. 44, № 5. — С. 467–471. — Бібліогр.: 8 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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author Klymenko, S.I.
author_facet Klymenko, S.I.
citation_txt Morphological Characteristics of Male Genitalia in Some Species of the Genus Eurytoma (Eurytomidae, Hymenoptera) / S.I. Klymenko // Вестник зоологии. — 2010. — Т. 44, № 5. — С. 467–471. — Бібліогр.: 8 назв. — англ.
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container_title Вестник зоологии
description Based on the analysis of morphological characteristics of related species of the genus Eurytoma, several groups of cryptic species poorly distinguishing by external morphology, but clearly confined to certain hosts are shown to have morphological differences of male genitalia that are highly species-specific and can be useful for identification of cryptic species of the genus Eurytoma (E. rosae Nees, E. strigifrons Thomson, and E. jaceae Mayr species complexes). В результате анализа морфологических особенностей близких видов рода Eurytoma обнаружено несколько групп криптических видов, которые плохо различаются по признакам внешней морфологии, однако четко приурочены к определенным хозяевам. Все эти группы видов находяться в пределах рода Eurytoma (Eurytomidae). Нами проведено исследование этих видов по особенностям генитального аппарата самцов как признака, который является высоко видоспецифическим и может способствовать определению близких видов рода Eurytoma (видов близких к E. rosae Nees, видов близких к E. strigifrons Thomson и видов близких к E. jaceae Mayr).
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fulltext MORPHOLOGICAL CHARACTERISTICS OF MALE GENITALIA IN SOME SPECIES OF THE GENUS EURYTOMA (EURYTOMIDAE, HYMENOPTERA) S. I. Klymenko Schmalhausen Institute of Zoology, NASciences of Ukraine B. Chmielnitsky str., 15, Kyiv, 01601 Ukraine] Received 30 March 2010 Accepted 1 July 2010 Morphological Characteristics of Male Genitalia in Some Species of the Genus Eurytoma (Eurytomidae, Hymenoptera). Klymenko S. I. — Based on the analysis of morphological characteristics of related species of the genus Eurytoma, several groups of cryptic species poorly distinguishing by external morphology, but clearly confined to certain hosts are shown to have morphological differences of male genitalia that are highly species-specific and can be useful for identification of cryptic species of the genus Eurytoma (E. rosae Nees, E. strigifrons Thomson, and E. jaceae Mayr species complexes). Ke y wo r d s: Hymenoptera, Eurytomidae, Eurytoma, genitalia, phallobase. Ìîðôîëîãè÷åñêèå îñîáåííîñòè ãåíèòàëüíîãî àïïàðàòà ñàìöîâ íåêîòîðûõ âèäîâ ðîäà Eurytoma (Eurytomidae, Hymenoptera). Êëèìåíêî Ñ. È. —  ðåçóëüòàòå àíàëèçà ìîðôîëîãè÷åñêèõ îñîáåí- íîñòåé áëèçêèõ âèäîâ ðîäà Eurytoma îáíàðóæåíî íåñêîëüêî ãðóïï êðèïòè÷åñêèõ âèäîâ, êîòîðûå ïëîõî ðàçëè÷àþòñÿ ïî ïðèçíàêàì âíåøíåé ìîðôîëîãèè, îäíàêî ÷åòêî ïðèóðî÷åíû ê îïðåäåëåííûì õîçÿåâàì. Âñå ýòè ãðóïïû âèäîâ íàõîäÿòüñÿ â ïðåäåëàõ ðîäà Eurytoma (Eurytomidae). Íàìè ïðîâåäåíî èññëåäîâàíèå ýòèõ âèäîâ ïî îñîáåííîñòÿì ãåíèòàëüíîãî àïïàðàòà ñàìöîâ êàê ïðèçíàêà, êîòîðûé ÿâëÿåòñÿ âûñîêî âèäîñïåöèôè÷åñêèì è ìîæåò ñïîñîáñòâîâàòü îïðåäåëåíèþ áëèçêèõ âèäîâ ðîäà Eurytoma (âèäîâ áëèçêèõ ê E. rosae Nees, âèäîâ áëèçêèõ ê E. strigifrons Thomson è âèäîâ áëèçêèõ ê E. jaceae Mayr). Êëþ÷åâûå ñ ëîâ à: ãåíèòàëüíûé àïïàðàò, ôàëëîáàçà, Eurytoma, E. strigifrons, E. rosae, E. jaceae. Claridge and Askew (1960) established for the first time that the genus Eurytoma includes groups of closely related species poorly distinguishing by their external mor- phology, but clearly confined to certain hosts. These authors studied the complex of species similar to E. rosae Nees, 1834, and showed that E. rosae and E. brunniventris Ratzeburg, 1852 are related very closely, and belong to the species complex also includ- ing of 6 species: E. rosae, E. brunniventris, E. hypochoeridis Claridge, 1960, E. centau- reae Claridge, 1960, E. curculionum Mayr, 1878, E. aciculata Ratzeburg, 1854. Later, other researchers faced this problem, in particular Domenichini (1960) who tried to use characteristics of male genitalia in description of E. rosae and E. brunniven- tris. However, according to drawings, Domenichini studied only the distal part of gen- italia of those two species. We advanced a little and studied all the structures of E. rosae and E. brunniventris male genitalia, as well as other related species: E. hypochoeridis and E. caninae Lotfalizadeh et Delvare, 2007. We established that E. rosae have the phal- lobase closed, 2 large sharp hooks and 3 small indents at the bases of hooks on digital sclerites; and E. brunniventris has the phallobase opened, digital sclerites with 2 long hooks and without indents (table 1). As we can see, E. rosae and E. brunniventris have different structure of phallobase and digital sclerites. By the structure of male genitalia, E. rosae is clearly differs from E. hypochoeridis, which also has closed phallobase, but the shape of digital sclerites and their indents are entirely different (fig. 1, 1, 3). Vestnik zoologii, 44(5): 467–471, 2010 Êðàòêèå ñîîáùåíèÿ We studied the structure of male genitalia in specimens of E. hypochoeridis reared from galls of some cynipids on stems of Hieracium umbellatum and Acroptilon repens. The structure of phallobase and digital sclerites in those specimens is the same show- ing conspecificity of examined specimens and rather wide host association of E. hypochoeridis to a few cynipid species on herbaceous plants. From E. rosae it differs mostly by size of digital sclerites and no indents in their base. We studied also E. caninae, the species recently recorded in Ukraine and morpho- logically similar to E. rosae (Klymenko, 2009). It differs from E. rosae by as follows: the clypeus without incisures on external edge, the mid coxa without lamella, the male 468 S. I. Klymenko Fig. 1. Male genitalia: 1 — E. hypochoeridis; 2 — E. brunniventris; 3 — E. rosae; 4 — E. caninae. Ðèñ. 1. Ãåíèòàëèè ñàìöà: 1 — E. hypochoeridis; 2 — E. brunniventris; 3 — E. rosae; 4 — E. caninae. E. rosae closed 1.4 times as wide as long at middle 2 hooks; tips sharp; 3 indents at base E. hypochoeridis closed rectangular, 2 times as wide as long at mid- dle 2 long hooks; tips slightly sharpened E. caninae closed elongate, 3.3 times as wide as long at middle 2 long thin hooks E. brunniventris opened square 0.7 times as wide as long at middle 2 wide hooks; tips blunt Ta b l e 1. Structure of male genitalia of Eurytoma species close to E. rosae Òàáëèö à 1. Ñòðîåíèå ãåíèòàëüíîãî àïïàðàòà ñàìöîâ Eurytoma, áëèçêèõ ê E. rosae Species Phallobase Digital sclerites Hooks on digital sclerites flagellum segments with extended pedicel. The analysis of male genitalia structure in these species confirms that the phallobase in both E. rosae and E. caninae) is closed (fig. 1, 4). In E. caninae male genitalia have extended digital sclerites, two hooks, no indents at their base, whereas male genitalia in E. rosae have three small indents at hooks bases. We also examined the male genitalia structure in the species of other groups of genus Eurytoma for comparison purposes, for instance, the complexes of species relat- ed to E. strigifrons Thomson and to E. jaceae Mayr. In our material, the E. strigifrons species complex was represented by morpholog- ically very similar species, including recently described E. adpressa Zerova et Klymenko, E. alexii Zerova et Klymenko, E. zlatae Zerova et Klymenko, E. taraxaci Zerova et Klymenko (Zerova et al., 2010). In addition to the species mentioned, morphological characters of E. victori Zerova et Klymenko, and E. ruthenica Zerova et Klymenko (not found in Ukraine yet, but 469Morphological Characteristics of Male Genitalia... Fig. 2. Male genitalia: 1 — E. strigifrons; 2 — E. zlatae; 3 — E. victori; 4 — E. ruthenica; 5 — E. adpressa; 6 — E. alexii; 7 — E. taraxaci. Ðèñ. 2. Ãåíèòàëèè ñàìöà: 1 — E. strigifrons; 2 — E. zlatae; 3 — E. victori; 4 — E. ruthenica; 5 — E. adpressa; 6 — E. alexii; 7 — E. taraxaci. expected to be found here) was studied. By external morphology, the species related to E. strigifrons are characterized by the followings characters: the eye with indistinct edg- ing, the face above the clypeus with numerous thin fan-shaped diverging keels, the female abdominal petiole is short, the fore coxa without prominence on the fore edge with more or less developed lamella, the hind femur without vertical plate. All species of this complex habitually look like E. strigifrons, but differ by the struc- ture of the antenna in both sexes, the sculpture of intermediate segment, abdomen shape, and something less by the venation of the fore wing. However, the most clear diagnostic characters were obtained from examination of the male genitalia (table 2). As the result, opened phallobase was found in E. strigifrons and E. victori. The lat- ter species differs from the other representatives of the group by presence of only one large hook on the digital sclerite. Other species have two large hooks and differ by their size and shape. 470 S. I. Klymenko E. strigifrons opened rectangular, 1.5 times as wide as long at middle 2 large and 3 small hooks E. zlatae closed rectangular, 2 times as wide as long at middle 2 large and 3 small hooks E. victori opened elongated rectangular, 1.5 times as long as wide 1 large hook E. ruthenica closed elongated rectangular, 1.5 times as long as wide 2 large and 1 small hook E. adpressa closed square, as long as wide 2 large sharp hooks E. alexii closed massive, rectangular, 1.35 times as wide as long 2 large hooks E. taraxaci closed elongate, prominent in the middle 2 small blunt hooks Ta b l e 2. Structure of male genitalia in the Eurytoma strigifrons species complex Òà á ëèö à 2. Ñòðîåíèå ãåíèòàëüíîãî àïïàðàòà ñàìöîâ Eurytoma, áëèçêèõ ê Eurytoma strigifrons Species Phallobase Digital sclerites Hooks on digital sclerites E. abdita closed almost square, 1.4 times as wide as long in the middle 3 hooks with sharp tips (2 utmost large, middle small) with 3 indents at their bases E. jaceae closed elongated, prominent in the middle 2 hooks; tips blunt; no indents at bases E. coleopterae closed almost square 3 large sharp equally long hooks Fig. 3. Male genitalia: 1 — E. abdita; 2 — E. jaceae; 3 — E. jaceae (ex Hypecoum). Ðèñ. 3. Ãåíèòàëèè ñàìöà: 1 — E. abdita; 2 — E. jaceae; 3 — E. jaceae (ex Hypecoum). Ta b l e 3. Structure of male genitalia in the Eurytoma jaceae species complex Òà á ëèö à 3. Ñòðîåíèå ãåíèòàëüíîãî àïïàðàòà ñàìöîâ Eurytoma, áëèçêèõ ê E. jaceae Species Phallobase Digital sclerites Hooks on digital sclerites Complex of species close to E. jaceae Mayr presented in Ukrainian fauna by 3 species: E. jaceae, E. abdita Zerova and E. coleopterae Zerova (table 3), but only first two species are trophically associated with cynipids. However, all three species occur in steppes and they are difficult to be identified based on external morphology in the mate- rial obtained by sweeping. Examination of male genitalia shows that specimens reared from cynipid galls in the stems of some Centaurea species belong to Eurytoma jaceae Mayr. They were identical to specimens reared from cynipid galls on Serratula bracteifo- lia (Iljin) Schischk. and Hypecoum imberbe Sibth. et Sm. (fig. 3, 3). As the result, E. jaceae trophic association is believed to be wider than it was expected (Zerova, Seryogina, 1995). Claridge M. F. Biological observations on some eurytomid (Hymenoptera: Chalcidoidea) parasites associated with Compositae, and some taxonomic implications. — Proceedings of the Royal Entomological Society of London. — 1961. — 36, P. 10–12. — P. 153–158. Claridge M. F., Askew R. R. Sibling species in the Eurytoma rosae group (Hym., Eurytomidae) // Entomophaga. — 5, N 2. — 1960. – P. 141–153. Domenichini G. L’Eurytoma parasita del Dacus oleae Gmel. e sue differenze con le specie affini // Bollotino di Zoologia agrarian e di Bachicoltura, Serie II. — 1960. — 3. — P. 99–108. Klymenko S. I. Eurytoma caninae (Hymenoptera, Eurytomidae), the species newly recorded from Ukraine // Vestnik zoologii. — 2009. — 43, N 6. — P. 547–550. — Russian : Êëèìåíêî Ñ. È. Eurytoma caninae (Hymenoptera, Eurytomidae) — íîâûé äëÿ ôàóíû Óêðàèíû âèä ýâðèòîìèä // Âåñòíèê çîîëîãèè. Lotfalizadeh H. A., Delvare G., Rasplus J.-Y. Eurytoma caninae sp. n. (Hymenoptera, Eurytomidae), a common species previously overlooked with E. rosae // Zootaxa. — 2007. — 1640. — P. 55–68. Zerova M. D. Chalcids: Eurytomidae. — Kyiv : Naukova Dumka, 1978. – 459 p. — (Fauna Ukrainy; Vol. 11: Parasitic Hymenoptera. Is. 9. — Ukrainian : Çåðîâà Ì. Ä. Õàëüöèäè-åâðèòîì³äè. — (Ôàóíà Óêðà¿íè. Ò. 11: Ïàðàçèòè÷í³ ïåðåòèí÷àñòîêðèë³. Âèï. 9.). Zerova M. D., Seryogina L. Ya. Morpho-biological analysis of complex Eurytoma species close to Eurytoma jaceae (Hymenoptera, Eurytomidae) // Zool. zhurn. — 1995. — 74, Is. 12, reprint. — 1995. — P. 31–43. — Russian : Çåðîâà Ì.Ä., Ñåðåãèíà Ë.ß. Ìîðôî-áèîëîãè÷åñêèé àíàëèç êîìïëåêñà âèäîâ Eurytoma, áëèçêèõ ê Eurytoma jaceae (Hymenoptera, Eurytomidae) //Çîîë. æóðí. — 1995. — 74, âûï. 12, îòä. îòòèñê. — 1995. — Ñ. 31-43. Zerova M. D., Seryogina L. Ya., Klymenko S. I. Palearctic species of Eurytoma close to Eurytoma strigifrons (Hymenoptera, Eurytomidae) // Zool. zhurn. – 2010. — 89, N 7. — Russian : Çåðîâà Ì. Ä., Ñåðåãè- íà Ë. ß., Êëèìåíêî Ñ. È. 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id nasplib_isofts_kiev_ua-123456789-65724
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
issn 0084-5604
language English
last_indexed 2025-12-07T17:57:00Z
publishDate 2010
publisher Інститут зоології ім. І.І. Шмальгаузена НАН України
record_format dspace
spelling Klymenko, S.I.
2014-07-01T05:42:12Z
2014-07-01T05:42:12Z
2010
Morphological Characteristics of Male Genitalia in Some Species of the Genus Eurytoma (Eurytomidae, Hymenoptera) / S.I. Klymenko // Вестник зоологии. — 2010. — Т. 44, № 5. — С. 467–471. — Бібліогр.: 8 назв. — англ.
0084-5604
https://nasplib.isofts.kiev.ua/handle/123456789/65724
Based on the analysis of morphological characteristics of related species of the genus Eurytoma, several groups of cryptic species poorly distinguishing by external morphology, but clearly confined to certain hosts are shown to have morphological differences of male genitalia that are highly species-specific and can be useful for identification of cryptic species of the genus Eurytoma (E. rosae Nees, E. strigifrons Thomson, and E. jaceae Mayr species complexes).
В результате анализа морфологических особенностей близких видов рода Eurytoma обнаружено несколько групп криптических видов, которые плохо различаются по признакам внешней морфологии, однако четко приурочены к определенным хозяевам. Все эти группы видов находяться в пределах рода Eurytoma (Eurytomidae). Нами проведено исследование этих видов по особенностям генитального аппарата самцов как признака, который является высоко видоспецифическим и может способствовать определению близких видов рода Eurytoma (видов близких к E. rosae Nees, видов близких к E. strigifrons Thomson и видов близких к E. jaceae Mayr).
en
Інститут зоології ім. І.І. Шмальгаузена НАН України
Вестник зоологии
Краткие сообщения
Morphological Characteristics of Male Genitalia in Some Species of the Genus Eurytoma (Eurytomidae, Hymenoptera)
Морфологические особенности генитального аппарата самцов некоторых видов рода Eurytoma (Eurytomidae, Hymenoptera)
Article
published earlier
spellingShingle Morphological Characteristics of Male Genitalia in Some Species of the Genus Eurytoma (Eurytomidae, Hymenoptera)
Klymenko, S.I.
Краткие сообщения
title Morphological Characteristics of Male Genitalia in Some Species of the Genus Eurytoma (Eurytomidae, Hymenoptera)
title_alt Морфологические особенности генитального аппарата самцов некоторых видов рода Eurytoma (Eurytomidae, Hymenoptera)
title_full Morphological Characteristics of Male Genitalia in Some Species of the Genus Eurytoma (Eurytomidae, Hymenoptera)
title_fullStr Morphological Characteristics of Male Genitalia in Some Species of the Genus Eurytoma (Eurytomidae, Hymenoptera)
title_full_unstemmed Morphological Characteristics of Male Genitalia in Some Species of the Genus Eurytoma (Eurytomidae, Hymenoptera)
title_short Morphological Characteristics of Male Genitalia in Some Species of the Genus Eurytoma (Eurytomidae, Hymenoptera)
title_sort morphological characteristics of male genitalia in some species of the genus eurytoma (eurytomidae, hymenoptera)
topic Краткие сообщения
topic_facet Краткие сообщения
url https://nasplib.isofts.kiev.ua/handle/123456789/65724
work_keys_str_mv AT klymenkosi morphologicalcharacteristicsofmalegenitaliainsomespeciesofthegenuseurytomaeurytomidaehymenoptera
AT klymenkosi morfologičeskieosobennostigenitalʹnogoapparatasamcovnekotoryhvidovrodaeurytomaeurytomidaehymenoptera