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THE LARVAL INSTARS OF APHIDIUS SMITHI (HYMENOPTERA: APHIDIIDAE)

Published online by Cambridge University Press:  31 May 2012

R. J. Chorney  and
M. Mackauer
R. J. Chorney
Affiliation:
Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia V5A 1S6
M. Mackauer
Affiliation:
Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia V5A 1S6
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Abstract

The pea aphid parasite Aphidius smithi Sharma & Subba Rao has four larval instars. The first and the fourth instars are mandibulate. The second instar possesses oral lobes but not mandibles. A bilobed feeding structure on the ventral side of the head of the third instar could function as a pharyngeal pump. The chief diagnostic features of each instar are illustrated with scanning electron micrographs. Variability in the number of larval instars among species of Aphidiidae is discussed.

Type
Articles
Information
The Canadian Entomologist , Volume 111 , Issue 5 , May 1979 , pp. 631 - 634
Copyright
Copyright © Entomological Society of Canada 1979

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