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LARVAL HEAD CAPSULE CHARACTERS FOR SPECIFIC IDENTIFICATION IN DEILINIA AND DREPANULATRIX (LEPIDOPTERA: GEOMETRIDAE)

Published online by Cambridge University Press:  31 May 2012

W. C. McGuffin
W. C. McGuffin
Affiliation:
Forestry Branch, Canada Department of Fisheries and Forestry, Ottawa
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Abstract

A study of the cast-off head capsules of fourth-instar larvae of Deilinia variolaria (Guenée), D. borealis Hulst, D. exanthemata bryantaria Taylor, D. erythemaria (Guenée), Drepanulatrix unicalcararia (Guenée), D. foeminaria (Guenée), and D. falcataria (Packard) shows considerable variation in colour pattern. The colour pattern varies sufficiently between species and yet is constant enough within species to enable one to construct a key to their identity. This key is very useful in identification where the larva has been parasitized.

Résumé

Étude de la capsule céphalique rejetée par les larves d’insectes au quatrième stade de leur développement. En l’occurrence Deilinia variolaria (Guenée), D. borealis Hulst, D. exanthemata bryantaria Taylor, D. erythemaria (Guenée), Drepanulatrix unicalcararia (Guenée), D. foeminaria (Guenée) et D. falcataria (Packard). Constant pour chaque espèce, le dessin de la coloration de la capsule varie beaucoup d’une espèce à l’autre, suffisamment pour qu’on puisse préparer une clef analytique qui devient fort utile pour identifier les larves parasitées.

Type
Articles
Information
The Canadian Entomologist , Volume 101 , Issue 11 , November 1969 , pp. 1228 - 1231
Copyright
Copyright © Entomological Society of Canada 1969

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References

McGuffin, W. C. 1958. The larvae of Deilinea Hübner (Lepidoptera: Geometridae), with notes on other stages. Can. Ent. 90: 216–223.CrossRefGoogle Scholar