TRICHOGRAMMA-DANUBIENSE SP-N (HYMENOPTERA, TRICHOGRAMMATIDAE), AN EGGPARASITOID OF MACROTHYLACIA-RUBI (LEPIDOPTERA, LASIOCAMPIDAE), WITH SOME DATA ON ITS BIONOMICS
H. Birova et M. Kazimirova, TRICHOGRAMMA-DANUBIENSE SP-N (HYMENOPTERA, TRICHOGRAMMATIDAE), AN EGGPARASITOID OF MACROTHYLACIA-RUBI (LEPIDOPTERA, LASIOCAMPIDAE), WITH SOME DATA ON ITS BIONOMICS, European journal of entomology, 94(2), 1997, pp. 301-306
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.