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ANISODACTYLINE LARVAE (COLEOPTERA: CARABIDAE: HARPALINI): DESCRIPTIONS OF GENUS-GROUP TAXA OF EASTERN CANADA AND PHYLOGENETIC REMARKS

Published online by Cambridge University Press:  31 May 2012

Yves Bousquet  and
Jean-Pierre Tchang
Yves Bousquet
Affiliation:
Centre for Land and Biological Resources Research, Agriculture Canada, Ottawa, Ontario, Canada K1A 0C6
Jean-Pierre Tchang
Affiliation:
C.P. 98, St-Jean-Port-Joli, Québec, Canada G0R 3G0
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Abstract

Larval features of the anisodactyline genus-group taxa Anisotarsus Chaudoir, 1837, Amphasia s.str. Newman, 1838, Xestonotus LeConte, 1853, Spongopus LeConte, 1848, Anisodactylus s.str. Dejean, 1829, Anadaptus Casey, 1914, Gynandrotarsus LaFerté-Sénectère, 1841, and Geopinus LeConte, 1848 are described. Keys to first instars and to second and third instars are included. Possible relationships between the genus-group taxa studied are discussed. Based on larval character states, Geopinus, considered as a distinct genus, could be more appropriately treated as a subgenus of Anisodactylus. The taxon Spongopus, included by recent authors as a subgenus of Anisodactylus, does not share two synapotypic character states of the genus Anisodactylus and could be more appropriately treated as a distinct genus.

Résumé

Les auteurs décrivent les caractères larvaires de certains taxa du groupe-genre de la sous-tribu Anisodactylina, soit Anisotarsus Chaudoir, 1837, Amphasia s.str. Newman, 1838, Xestonotus LeConte, 1853, Spongopus LeConte, 1848, Anisodactylus s.str. Dejean, 1829, Anadaptus Casey, 1914, Gynandrotarsus LaFerté-Sénectère, 1841, et Geopinus LeConte, 1848. On présente des tableaux de détermination pour le premier stade et pour les deuxième et troisième stades. On discute des relations possibles entre les taxa étudiés. L’étude des caractères larvaires suggère que Geopinus, traité comme genre distinct, devrait plutôt être considéré comme un sous-genre de Anisodactylus. Par contre, il semble préférable que le taxon Spongopus, que la plupart des auteurs récents considèrent comme un sous-genre de Anisodactylus, soit traité comme genre distinct.

Type
Articles
Information
The Canadian Entomologist , Volume 124 , Issue 5 , October 1992 , pp. 751 - 783
Copyright
Copyright © Entomological Society of Canada 1992

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