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Issue: Vol. 7: 31 Aug. 2001
Type: Article
Published: 2001-08-31
DOI: 10.11646/zootaxa.7.1.1
Page range: 1–20
Abstract views: 64
PDF downloaded: 4

Description of the pupal exuviae of some species belonging to Orthocladius s. str. van der Wulp, 1874 (Diptera: Chironomidae: Orthocladiinae), with a new key to species of West Palaearctic region

Department of Biology, Section Ecology, University of Milano, via Celoria, 26 I 20133 Milano, Italy
Department of Biology, Section Ecology, University of Milano, via Celoria, 26 I 20133 Milano, Italy
Chironomidae Orthocladius taxonomy key to species pupal exuviae

Abstract

Some species belonging to the subgenus Orthocladius s. str. van der Wulp, 1874 known to occur in the West Palaearctic region (in Italy in particular) are reconsidered according to evidence from pupal exuviae. Male genitalia and larval characters are excluded in the present study and will be examined in future research. O. ticinoi Rossaro & Prato, 1991 is restored to the original status. O. marchetti Rossaro & Prato, 1991 is confirmed as a valid species. O. pinderi Rossaro & Prato, 1991 is confirmed to be a junior synonym of O. oblidens (Walker, 1856). O. pedestris Kieffer, 1909 and O. obumbratus Johannsen, 1905 are analysed for their differences. Diagnostic characters used up to now to identify Orthocladius s. str. species at the pupal stage are reconsidered and criticised, and new information about their distribution and a key to pupal exuviae of the known West Palaearctic species are given.

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