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THE LARVAL INSTARS OF THE BLACK FLIES STEGOPTERNA MUTATA AND SIMULIUM VITTATUM (DIPTERA: SIMULIIDAE)

Published online by Cambridge University Press:  31 May 2012

Douglas H. Ross
Douglas H. Ross
Affiliation:
Department of Entomology, University of Georgia, Athens 30602
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Abstract

The six larval instars of Stegopterna mutata (Malloch) and seven larval instars of Simulium vittatum Zetterstedt can be definitively separated by differences in postgenal length, body length, and number of primary cephalic fan rays. Counts of the number of rows of hooks and hooks/row in the anal circlet were inconclusive in separating all instars of either species.

Type
Articles
Information
The Canadian Entomologist , Volume 111 , Issue 6 , June 1979 , pp. 693 - 697
Copyright
Copyright © Entomological Society of Canada 1979

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