The lady beetle, Clitosthetus arcuatus Rossi (Coleoptera: Coccinellidae), a predator of celandine whitefly, Aleurodes proletella and greenhouse whitefly, Trialeurodes vaporariorum (Homoptera: Aleurodidae) in Ukraine - Ja. Chumak; Z. L. Berest (The Kharkov Entomological Society gazette)