Gonotrophic and embryonic development of the Palaearctic screwworm fly Wohlfahrtia magnifica

Gonotrophic and embryonic development of Wohlfahrtia magnifica were studied on pupae and adults reared in the laboratory. Gonotrophic development in screwworm begins 8 days after pupation in yellow eye pharate adults. The adult female emerges with its oocytes at stage 3 and requires only 2 days for complete oogenesis and 5 days for complete embryogenesis. Mating occurs 2-5 days after adult emergence, starting the embryonic development. Each female produces an average of 76.8 active larvae which can produce a traumatic lesion in their hosts. When food sources were regularly supplied synchronization of gonotrophic stages can be observed. These stages together with the embryonic ones are described.