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Importance of male and ephippial female characters fordifferentiating three Palaearctic species of Macrothrix Baird, 1843(Cladocera: Anomopoda), with a redescription of Macrothrix dadayiBehning, 1941

Published online by Cambridge University Press:  15 January 2009

A. A. Kotov
A. A. Kotov*
Affiliation:
A. N. Severtsov Institute of Ecology and Evolution, Leninsky Prospect 33, Moscow 119071, Russia.
*
alexey_kotov@sevin.ru
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Abstract

I examined ephippial females and males of the Palaearctic Macrothrix hirsuticornis Norman & Brady, 1867 and M. tripectinata Weisig, 1934 (Cladocera: Anomopoda: Macrothricidae). Parthenogenetic and ephippial females, and males of a third species, M. dadayi Behning, 1941, are redescribed on material from the Ciscaucasian coast of the Black Sea (Russia). A series of male characters, useful for species discrimination was found. Ephippia of M. tripectinata and M. dadayi are covered with small spinules, a unique synapomorphy of these species. Recent progress in Macrothrix systematics allows us to predict that the taxonomy will improve as more males and ephippial females (currently known only in half the species), yet especially valuable for systematics, are described.

Keywords

CladoceraMacrothricidaesystematicstaxonomyPalaearctic
Type
Research Article
Information
Annales de Limnologie - International Journal of Limnology , Volume 44 , Issue 1 , 2008 , pp. 45 - 61
Copyright
© Université Paul Sabatier, 2008

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