Bythocaris irene Retowsky, 1946,

Phylum:Arthropoda Siebold, 1848
Class:Malacostraca Latreille, 1802
Order:Decapoda Latreille, 1802
Family:Bythocarididae Christoffersen, 1987
Genus:Bythocaris G.O. Sars, 1870

The main diagnostic characters to distinguish B. irene from the other species of Bythocaris are: 1. the lack of pigmentation of the eye; 2. the form of the eye (the basal part of eye-stalk is distinctly wider than the distal part, eyes more than twice as long as wide); 3. the rostrum being broadly triangular in dorsal view; 4. the lamina of the scaphocerite having a slightly rounded anterior margin; 5. the produced pleura of the fifth abdominal segment and the rounded pleura of other abdominal segment; 6. the armed meri of the third to fifth pereiopods. These six characters are always present together. Characters like the form of the tip of the telson, presence or absence of an antennal spine, size of the pleura of the second abdominal segment, and the form of the apex of the rostrum are variable. (Sokolov, 2000)

Bythocaris irene (from Sokolov, 2000)

Bythocaris irene (from Sokolov, 2000)


  • Sokolov, V. (2000) Deep-sea shrimps of the genus Bythocaris G.O. Sars in the collections of Russian museums, with the description of a new species (Crustacea: Decapoda: Hippolytidae). Zool. Med. Leiden 74 (24), 29.xii.: 403-468, figs 1-39. ISSN 0024-0672

Author: Zimina Olga L. / 29.10.2015
Last edit: Zakharov Denis V. / 14.02.2018

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