To the peculiarities of the development of horsefly pupal phase (Diptera, Tabanidae) in Northwest Russia
Peculiarities of the pupal development of horseflies have been experimentally studied in Pskov Province with an example of tabanids. The temperature dependence of the pupal phase duration was investigated. Under stable laboratory conditions, the duration of pupal development of the same species obtained from larvae collected in the year of the investigation was characterized by strong fluctuations. Pupae obtained from larvae that had wintered in laboratory, had demonstrated the minimal degree of fluctuation concerning duration of the development. Reasons of these differences are discussed.