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The North American Species in Group X of Ips De Geer (Coleoptera: Scolytidae)1

Published online by Cambridge University Press:  31 May 2012

G. R. Hopping
G. R. Hopping
Affiliation:
Forest Entomology and Pathology Laboratory, Calgary, Alberta
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Abstract

Ips calligraphus (Germar), I. ponderosae Swaine and I. interstitialis (Eichhoff) represent one variable species with the oldest name, Ips calligraphus (Germar) taking precedence. Ips calligraphus can always be recognized by the six spines on each side of the declivity. All other species in North America have less than six spines on each side.

Type
Articles
Information
The Canadian Entomologist , Volume 97 , Issue 8 , August 1965 , pp. 803 - 809
Copyright
Copyright © Entomological Society of Canada 1965

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