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THE HOST-FINDING AND OVIPOSITION BEHAVIOUR OF MORMONIELLA VITRIPENNIS (WALKER) (HYM., PTEROMALIDAE), A PARASITE OF MUSCOID FLIES by ROY L. EDWARDS (Department of Zoology, The University, Hull) 1 (With 10 figs) (Rec. x6-III 1954) INTRODUCTION Mormoniella vitripennis (Walker) is a Chalcid wasp which parasitizes the pupal stage of Muscoid flies. The female drills with her ovipositor through the host puparium and lays a number of eggs on the enclosed pupa. When the ovipositor is withdrawn some of the host's blood is sipped up by the parasite. This blood is essential for the rapid production of eggs. After the eggs have been laid they hatch into larvae which feed on the host's tissues. The larvae pupate inside the host puparium from which the resultant adult parasites subsequently escape. DE BACH and SMITH (I94I) used M. vitripennis in their experiments on population dynamics. The results obtained in those experiments are not entirely satisfactory and it was felt that a knowledge of the host-finding and oviposition behaviour of M. vitripennis would enable a better assessment of their value to be made. A paper written jointly with Professor G. C. VARLEY, dealing with the broader aspect of the work is in course of pre-
Behaviour – Brill
Published: Jan 1, 1955
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