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Toxares deltiger (Haliday) (Hymenoptera: Aphidiidae) parasiting the cereal aphid, Metopolophium dirhodum (Walker) (Hemiptera: Aphididae), in southern England: a new host-parasitoid record

Published online by Cambridge University Press:  10 July 2009

W. Powell
W. Powell
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts. AL5 2JQ, UK
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Abstract

Sixty-seven per cent of parasitoid mummies which developed from Metopolophium dirhodum (Wlk.) collected in wheat fields at Rothamsted, southern England, in 1979 were of Toxares deltiger (Hal.), a species previously unrecorded from cereal aphids. T. deltiger formed only 1% of samples when parasitoid mummies were collected directly from cereals in the field. Laboratory observations of the parasitoid indicate that affected aphids probably leave the host-plant prior to death and mummy formation.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 70 , Issue 3 , September 1980 , pp. 407 - 409
Copyright
Copyright © Cambridge University Press 1980

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References

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