A revision of the subgenus Eurycercus (Teretifrons) Frey, 1975 (Crustacea: Cladocera) in the Holarctic with description of a new species from Russian Arctic

Our study is aimed at a taxonomic revision of the subgenus Eurycercus (Teretifrons) Frey, 1975 (Crustacea: Cladocera: Eurycercidae) in the Holarctic based on the morphology of parthenogenetic females. Three species were revealed and described: (1) E. glacialis Lilljeborg, 1887 which is relatively wi...

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Bibliographic Details
Published in:Zootaxa
Main Authors: BEKKER, EUGENIYA I., KOTOV, ALEXEY A.
Format: Article in Journal/Newspaper
Language:English
Published: Mangolia Press 2016
Subjects:
Crustacea
Branchiopoda
Anomopoda
taxonomy
new species
revision
head pores
Arctic
Newfoundland
Canada
Pacific
Breton Island
Seta
Taimyr
Siberia
Online Access:http://www.mapress.com/j/zt/article/view/zootaxa.4147.4.1
https://doi.org/10.11646/zootaxa.4147.4.1
Description
Summary:Our study is aimed at a taxonomic revision of the subgenus Eurycercus (Teretifrons) Frey, 1975 (Crustacea: Cladocera: Eurycercidae) in the Holarctic based on the morphology of parthenogenetic females. Three species were revealed and described: (1) E. glacialis Lilljeborg, 1887 which is relatively widely distributed in the north portion of Atlantic and Pacific regions; (2) E. nigracanthus Hann, 1990 which is apparently present in Labrador and Newfoundland, Cape Breton Island and Nova Scotia and (3) Eurycercus chernovi sp. nov. from Taimyr Peninsula in Siberia, Russia. Main differences of the latter taxon from other species are: (1) more proximal position of sensory seta on the antenna I and (2) surface of cuticle of major head pore forms a low projection in middle. A revision of this subgenus in Arctic Siberia and Canada needs to be continued.

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