The effects of day length on preimaginal development and reproductive maturation of females of laboratory strains which originated from two native: Irkutsk (Siberia, Russia) and Daegu (South Korea) and two invasive: Sochi (Caucasus, Russia) and Pardubice (Czechia) populations of Harmonia axyridis were investigated under the laboratory conditions. In all the… (More)
Laboratory experiments showed that under the same constant conditions individual variability in several important parameters of the life cycle: the rate of preimaginal development, size and weight of emerging adults (largely determining the potential fecundity of females), and the rate of reproductive maturation (indirectly representing the tendency for… (More)
This is the first report on the effects of temperature (from 17 to 30°C), photoperiod (from 10 to 16 h of light), and diet (the wheat aphid Schizaphis graminum and the green peach aphid Myzus persicae) on preimaginal developmental rates, adult body mass, preoviposition period, and female fecundity of the predatory lady beetle Harmonia quadripunctata… (More)
The fauna of the family Scathophagidae of Yakutia, including 44 species of 15 genera, was studied. 23 species are recorded from the territory for the first time. The Arctic and subarctic zones of Yakutia have been still poorly studied, and additional species are found there. The scathophagid fauna of Yakutia was compared with the faunas of the neighboring… (More)
The structure of the ovipositor sclerites and muscles was studied in the tephritid fly Oxyna parietina (Linnaeus, 1758) inducing galls on the stems of Artemisia vulgaris. Adaptations of the ovipositor structure associated with changes of the oviposition substrate due to new larval habits are analyzed. The ovipositor muscles of Oxyna parietina are compared… (More)
The ability of two Trichogramma species (Trichogramma telengai Sor. and T. principium Sug. et Sor.) to accumulate the effect of the maternal photoperiodic response during 5 consecutive generations reared in the laboratory under the short day (12 h) conditions was investigated. Control individuals developed at the same temperature of 20°C, but under the long… (More)
Unmixed colonies of larval antlions and wormlions in similar pits were found in the Xiaolongmen National Forest Park in the Taihang Shan, China. A male of Vermiophis taihangensis Yang & Chen, 1993 was reared from a larva and a morphological description of the third instar larval wormlion is presented. The larva of Vermiophis taihangensis differs from the… (More)
The structure of the ovipositor sclerites and muscles was investigated in Spaziphora hydromyzina (Diptera, Scathophagidae).