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THE VALIDITY OF IPS CRIBRICOLLIS (EICH.) (COLEOPTERA: SCOLYTIDAE) AS DISTINCT FROM I. GRANDICOLLIS (EICH.) AND THE OCCURRENCE OF BOTH SPECIES IN CENTRAL AMERICA

Published online by Cambridge University Press:  31 May 2012

Gerald N. Lanier
Gerald N. Lanier
Affiliation:
State University of New York, College of Environmental Science and Forestry, Syracuse, New York, USA13210
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Abstract

Comparison of type material and series of Ips cribricollis (Eich.) and I. grandicollis (Eich.) showed that the species are readily separated by external morphology, the pars stridens of the females, and, especially, the genitalia of the males. Earlier work showed that representatives of the two species were not able to interbreed and that their chromosomes were different. These data and the discovery of the two species at the same locality in Central America are compelling reasons for recognition of these entities as separate species.

Résumé

La comparaison de matériel type et de séries d’Ips cribricollis (Eich.) et d’I. grandicollis (Eich.) a permis d’établir que ces espèces sont aisément séparables par la morphologie extérieure, la pars stridens des femelles, et surtout les génitalias mâles. Des travaux antérieurs ont montré que les deux espèces ne peuvent se croiser et que leurs chromosomes sont différents. Ces données prises en considération avec la découverte des deux espèces dans une même localité d’Amérique Centrale constituent des raisons suffisantes pour reconnaître ces deux entités comme des espèces distinctes.

Type
Articles
Information
The Canadian Entomologist , Volume 119 , Issue 2 , February 1987 , pp. 179 - 187
Copyright
Copyright © Entomological Society of Canada 1987

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