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RECONSIDERATION OF THE METHOD TO MEASURE THE LARVAL INSTARS BY USE OF THE FREQUENCY DISTRIBUTION OF HEAD-CAPSULE WIDTHS OR LENGTHS

Published online by Cambridge University Press:  31 May 2012

Yoichi Kishi
Yoichi Kishi
Affiliation:
Institute of Forest Zoology, Faculty of Agriculture, University of Tokyo, Japan
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Abstract

The number of molted head capsules of Pissodes nitidus is four, but the frequency distribution of the head-capsule widths and lengths of the weevil larvae do not always show four clear separations. It is necessary for more reliable determination about larval instars to count the molted head capsules in the larval gallery.

Type
Articles
Information
The Canadian Entomologist , Volume 103 , Issue 7 , July 1971 , pp. 1011 - 1015
Copyright
Copyright © Entomological Society of Canada 1971

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