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Plecopteracoluthus downesi gen. et sp. nov. (Diptera: Chironomidae), a Species Whose Larvae Live Phoretically on Larvae of Plecoptera

Published online by Cambridge University Press:  31 May 2012

A. W. Steffan
A. W. Steffan
Affiliation:
Entomology Research Institute, Research Branch, Canada Department of Agriculture, Ottawa, Ontario
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Abstract

In a creek northwest of the Gatineau Hills (Quebec) larvae of Chironomidae (Diptera) were found living in phoretic association with the immature stages of Perlidae (Plecoptera). The larvae were reared to the adult stage in the laboratory. Life pattern and morphological comparisons are made with other phoretic and parasitic forms of Orthocladiinae and with certain other genera, and it is concluded that the form represents a new genus and species of Orthocladiini, and has probably originated from the common ancestors of the genera Rheocricotopus, Paracricotopus and Microcricotopus. Detailed descriptions are given of the imago, pupa and larva of this insect.

Type
Articles
Information
The Canadian Entomologist , Volume 97 , Issue 12 , December 1965 , pp. 1323 - 1344
Copyright
Copyright © Entomological Society of Canada 1965

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