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External morphology of Xyleborus ferrugineus (Fabr.) (Coleoptera: Scolytidae). I. Head and prothorax of adult males and females

✍ Scribed by Joel G. Kingsolver; Dale M. Norris

Book ID
102902858
Publisher
John Wiley and Sons
Year
1977
Tongue
English
Weight
837 KB
Volume
154
Category
Article
ISSN
0362-2525

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✦ Synopsis

Abstract

The overall body dimensions and external morphology of the head, head appendages, prothorax, and prothoracic legs of the adult haploid male and diploid female Xyleborus ferrugineus (Fabricius) were examined by scanning electron microscopy and light microscopy, and analyzed for variation. The female is significantly larger (1.26 X) than the male. The length/width ratio of both the pronotum and elytron, and the pronotum‐length/elytron‐length ratio are significantly different in the male and female. These findings indicate a distinct sexual dimorphism in general body form. There is significantly greater variability in pronotal length and width in the male than the female. There are sexual differences in setal patterns and setal size variabilities on the dorsal pronotum and the terminus of the antennae.

📜 SIMILAR VOLUMES

Embryogenesis of Xyleborus ferrugineus (
Embryogenesis of Xyleborus ferrugineus (Fabr.) (Coleoptera, Scolytidae). II. Developmental rates of male and female embryos
✍ Sylvia L. Beeman; Dale M. Norris 📂 Article 📅 1977 🏛 John Wiley and Sons 🌐 English ⚖ 400 KB

## Abstract The developmental rates of male and female embryos of __Xyleborus ferrugineus__ were compared by charting for each sex the mean age for each of ten discrete morphological stages of embryogenesis from pole cell exclusion to eclosion. Male and female embryos developed synchronously from s