Observations on the Biology and Mass-breeding of Spalangia drosophilae Ashm. (Hymenoptera, Spalangiidae), a Parasite of the Frit-fly, Oscinella frit (L.)

Abstract

A description is given of a technique for breeding the parasite Spalangia drosophilae Ashm. (Spalangiidae). Various biological “constants” such as fecundity and longevity were studied at 70°, 75° and 83°F., and the variation in the figures for these is given. The oviposition rate, efficacy of single matings, sex ratio, percentage in diapause, developmental period of both male and female at the different temperatures are also give.