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The sheep headfly, Hydrotaea irritans (Fallén) (Diptera: Muscidae): biology of immature stages in the soil

Published online by Cambridge University Press:  10 July 2009

J. Robinson
Affiliation:
Department of Agricultural Biology, The University, Newcastle upon Tyne, NE1 7RU, UK.

Abstract

Sampling in Northumberland, England, and southern Scotland of pasture soils, the major larval habitat of Hydrotaea irritans (Fall.), showed larvel densities of between 0 and 30/m2; 15 different sites were examined, and all produced larvae. Larvae were found from September until June, larvael development continuing in the soil for about eight months. A study of the distribution within a single field that larvae were not confined to the wooded margins but occurred in significant numbers throughout the field. Higher numbers of larvae were present in the soil beneath cow pats than in the open field, but the proportion relative to the total population is small. Larvae prey was predominantly dipterous and coleopterous larvae. Pupation took place in the top 5 cm of pasture soil during May and lasted until late June. Emergence of adults took place from June until late July; males and females emerged over the same period

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1979

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