Garibian P.G.1, Kirova N.A.2, Kotov A.A.1 2022. Pleuroxus pamirensis (Werestschagin, 1923) (Crustacea: Cladocera), first record for the fauna of Russian Federation // Arthropoda Selecta. Vol.31. No.2: 173–178 [in English].

1 A.N. Severtsov Institute of Ecology and Evolution, Leninsky Prospect 33, Moscow 119071, Russia. E-mails: ,

2 Tuvinian Institute for Exploration of Natural Resources of SB RAS, Internacyonalnaya Str., 117A, Kyzyl, Tuva Republic, 667007, Russia. E-mail:

doi: 10.15298/arthsel. 31.2.05

ABSTRACT. This communication provides the first record of Pleuroxus pamirensis (Werestschagin, 1923) (Crustacea: Cladocera) from the Russian Federation. It belongs to a unique pair of chydorid species having lateral horns on valves. It differs from closest P. annandalei (Daday, 1908) in: (1) postanal teeth predominantly solitary; (2) spine on proximal exopod segment of antenna II longer than half of second segment; (3) seta i on limb I long (as long as seta g of h).  Our study has demonstrated that the mountain regions could be regarded as sources for such new findings of the cladocerans even in well-studied countries.

KEY WORDS: Crustacea, Cladocera, first record, fauna, Russia.

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