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The Final-Instar Larva of Bracon nuperus Cress. (Hymenoptera: Braconidae)

Published online by Cambridge University Press:  31 May 2012

Thelma Finlayson
Thelma Finlayson
Affiliation:
Research Institute, Research Branch, Canada Department of Agriculture, Belleville, Ontario
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Extract

Bracon nuperus Cress. was reared from larvae of Orellia ruficauda (Fab.) collected at Vineland and Belleville, Ont., and Armstrong, B.C., by Dr. Peter Harris of the Research Institute, Belleville, Ont., while investigating the biological control of Canada thistle, Cirsiurn arvense (L.) Scop. (Harris, in press). The cocoon and cast skin of the last larval instar are described and illustrated here because the cephalic structures possess some unusual characteristics that differ from descriptions of this genus by other authors (Genieys 1925; Goidanich 193 1 ; Glover 1934; Salt 1931; Short 1952), and that have not been heretofore described. The methods and terminology used are similar to those described by Finlayson (1960).

Type
Articles
Information
The Canadian Entomologist , Volume 96 , Issue 11 , November 1964 , pp. 1470 - 1471
Copyright
Copyright © Entomological Society of Canada 1964

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References

Finlayson, Thelma. 1960. Taxonomy of cocoons and puparia, and their contents, of Canadian parasites of Neodiprion sertifer (Geoff.) (Hymenoptera: Diprionidae). Canad. Ent. 92: 20–47.CrossRefGoogle Scholar
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Harris, P.Host specificity of Altica carduorum Guer. (Coleoptera: Chrysomelidae). Canad. J. Zool. In press.Google Scholar
Salt, G. 1931. Parasites of the wheat-stem sawfly, Cephus pygmaeus, Linnaeus, in England. Bull. ent. Res. 22: 479–545.CrossRefGoogle Scholar
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