TRICHOGRAMMA-DANUBIENSE SP-N (HYMENOPTERA, TRICHOGRAMMATIDAE), AN EGGPARASITOID OF MACROTHYLACIA-RUBI (LEPIDOPTERA, LASIOCAMPIDAE), WITH SOME DATA ON ITS BIONOMICS

Trichogramma danubiense sp.n., an ooparasitoid of eggs of Macrothylaci a rubi is described, collected from Prunus cerasus in SW Slovakia. In the laboratory, the species could reproduce in eggs of Mamestra brassi cae and Ephestia kuehniella. It can be distinguished from the related T. lingulatum Pang & Chen by an incision on the apex of the dorsal exp ansion of the gonobase. T. danubiense is arrhenotokous in laboratory c onditions (22 degrees C, 55% RH, 16L : 8D). The females obtained from eggs of M. rubi lived 2-14 days, their average fecundity was 262 (maxi mum 323) progeny and the percentage of males in progeny was between 13 .4-42.6%, when eggs of the factitious host M. brassicae were used. The species had 8-9 generations per year in outdoor conditions of SW Slov akia, when reared in eggs of M. brassicae.