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Notes on the Natural Control of Coleophora laricella, the Larch Case-bearer

Published online by Cambridge University Press:  10 July 2009

W. H. Thorpe
W. H. Thorpe
Affiliation:
late of Imperial Institute of Entomology.
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Extract

This paper consists of a preliminary report on investigations of the parasites of Coleophora laricella in Europe, with a view to their possible utilisation in Canada.

Systematic and biological notes on the more important species are given.

The most promising parasite, Angitia nana, has already been shipped to Canada. It is a solitary internal parasite of the case-bearer larva. Further investigations are necessary before it can be considered safe to introduce any other species.

I am very grateful to Dr. C. Ferrière, of the Imperial Institute of Entomology, for the time and trouble he has given to the work of identifying the parasite material. The late Mr. J. C. Robbins helped materially by kindly carrying on observations while I was absent through illness, and by collecting material in the field. Mr. R. J. Spittle has been of great assistance in the production of the finished drawings, several of them being mainly his own work. A number of the earlier field collections were made by Mr. H. S. Hanson.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 24 , Issue 2 , July 1933 , pp. 271 - 291
Copyright
Copyright © Cambridge University Press 1933

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