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TETROPIUM PARVULUM ELEVATED TO SPECIES RANK AND CONTRASTED TO T. CINNAMOPTERUM IN MORPHOLOGY AND HOST PREFERENCE (COLEOPTERA: CERAMBYCIDAE)

Published online by Cambridge University Press:  31 May 2012

A. G. Raske
A. G. Raske
Affiliation:
Northern Forest Research Centre, Canadian Forestry Service, Edmonton, Alberta1
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Abstract

The morphological differences in the larva and the adult of Tetropium parvulum Casey and T. cinnamopterum Kirby are reported. Diagnostic characters are the urogomphi of the larva. The shape of the eye, scutellum, and genitalic structures and the number of punctures on the pronotum distinguish the adult. The genitalia are also compared with a third species, T. velutinum. Larvae of T. cinnamopterum have been recorded from a number of conifers, while T. parvulum larvae have only been recorded from spruce.

A lectotype is designated for T. cinnamopterum. Examination of type specimens confirmed that T. alaskanum Fall is a synonym of T. parvulum and that T. schwarzianum Casey and T. parallelum are close to T. cinnamopterum. A key is given to distinguish T. parvulum from T. cinnamopterum.

Résumé

Exposé des différences morphologiques entre Tetropium parvulum Casey et T. cinnamopterum Kirby au stade larvaire et à l’état adulte. La larve se caractérise par ses "urogomphes", l’adulte par la forme de l’oeil, les structures de l’écusson et des organes génitaux externes et le nombre de perforations sur le pronotum. Les organes génitaux externes sont comparés à ceux d’une troisième espèce, T. velutinum. Les larves de T. cinnamopterum ont été recueillies sur un certain nombre de Conifères, tandis que celles de T. parvulum l’ont été seulement sur l’Epinette.

Désignation d’un lectotype pour T. cinnamopterum. Confirmation par l’examen d’échantillons typiques de la synonymie de T. alaskanum Fall et T. parvulum ainsi que de la parenté de T. parallelum et T. cinnamopterum. Clef pour la distinction de T. parvulum de T. cinnamopterum.

Type
Articles
Information
The Canadian Entomologist , Volume 105 , Issue 5 , May 1973 , pp. 745 - 755
Copyright
Copyright © Entomological Society of Canada 1973

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