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Immatures of Rheocricotopus (Psilocricotopus) valgusChaudhuri & Sinharay of Darjeeling Himalaya with noteson ecology (Diptera : Chironomidae)

Published online by Cambridge University Press:  01 February 2009

N. Hazra ,
D. K. Som  and
P. K. Chaudhuri
N. Hazra
Affiliation:
Department of Zoology, University of Burdwan, Burdwan 713 104, India
D. K. Som
Affiliation:
Department of Zoology, University of Burdwan, Burdwan 713 104, India
P. K. Chaudhuri
Affiliation:
Department of Zoology, University of Burdwan, Burdwan 713 104, India
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Abstract

The immatures (larva and pupa) of Rheocricotopus (Psilocricotopus) valgus Chaudhuri & Sinharay are described for the firsttime. The species belongs to chalybeatus group. The larva is opportunistic, present in the fast-flowing streams to slow-flowingorganically enriched sewage drains. It lives in tunnels made of various particles glued together by silky secretions. There are twogenerations a year with peak emergence in April-May and September-November. The sex ratio of females to males is 2:1.

Keywords

larvapuparheocricotopushabitatlarval dwellingseasonal emergencelarvenympherheocricotopushabitatsémergence saisonnière
Type
Research Article
Information
Annales de Limnologie - International Journal of Limnology , Volume 34 , Issue 1 , March 1998 , pp. 75 - 82
Copyright
© Université Paul Sabatier, 1998

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