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THE NEARCTIC SPECIES OF HOMASPIS (HYMENOPTERA, ICHNEUMONIDAE, CTENOPELMATINAE)

Published online by Cambridge University Press:  31 May 2012

John R. Barron
John R. Barron
Affiliation:
Biosystematics Research Centre, Agriculture Canada, Research Branch, Central Experimental Farm, Ottawa, Ontario, Canada K1A 0C6
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Abstract

The Nearctic species of the genus Homaspis Foerster, parasites of various species of sawflies on coniferous and deciduous trees and shrubs, were revised. There are 10 species of which seven were described as new. These were placed in three species groups as follows: the areolatus group including H. areolatus and H. petiolatus spp.nov.; the cristatus group including H. cristatus and H. pectinatus spp.nov.; and the interruptus group, including H. interruptus (Provancher), H. slossonae Cushman, H. brevis sp.nov., H. cephalciae sp.nov., H. albipes Davis, and H. cavatus sp.nov. Relationships of the species groups were discussed.

Résumé

L’auteur révise les espèces néarctiques du genre Homaspis Foerster qui parasitent diverses espèces de mouches-à-scies des arbres et arbustes conifères ou à feuilles caduques. Parmi les 10 espèces décrites, sept sont nouvelles à la science. Elles sont réparties en trois groupes d’espèces comme suit : le group areolatus formé de H. areolatus et H. petiolatus spp.nov.; le groupe cristatus qui comprend H. cristatus et H. pectinatus spp.nov.; et le groupe interruptus composé de H. interruptus (Provancher), H. slossonae Cushman, H. brevis sp.nov., H. cephalciae sp.nov., H. albipes Davis et H. cavatus sp.nov. On discute finalement des liens entre ces groupes d’espèces.

Type
Articles
Information
The Canadian Entomologist , Volume 122 , Issue 2 , April 1990 , pp. 191 - 216
Copyright
Copyright © Entomological Society of Canada 1990

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