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The Larvae of Choristoneura fumiferana (Clem.) and C. pinus Free. (Lepidoptera: Tortricidae)1

Published online by Cambridge University Press:  31 May 2012

Margaret R. MacKay
Margaret R. MacKay
Affiliation:
Division of Forest Biology, Ottawa, Canada
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It has long been known that a series of late-instar larvae of Choristoneura fumiferana (Clem.) may be distinguished from one of C. pinus Free. by colour differences of the head and prothoracic shield: specimens of the former usually have dark heads and light prothoracic shields; specimens of the latter usually have light heads and dark prothoracic shields. However, intensive study of the larvae, including numerous specimens of C. fumiferana from the spruce-balsam fir areas of Algonquin Park, Ontario, and of C. pinus from jack-pine areas at Normandale, Ontario, has shown that there are highly significant structural differences in the head; these differences serve to identify small series of either species and most single specimens.

Type
Articles
Information
The Canadian Entomologist , Volume 85 , Issue 4 , April 1953 , pp. 128 - 133
Copyright
Copyright © Entomological Society of Canada 1953

References

Fracker, S. B. 1915. The classification of lepidopterous larvae. Illinois Biol. Monogr. 2(1).CrossRefGoogle Scholar
Heinrich, C. 1916. On the taxonomic value of some larval characters in the Lepidoptera. Proc. Ent. Soc. Washington 18: 154–164.Google Scholar