Redescription of Boeck, 1873 (Copepoda: Harpacticoida: Ectinosomatidae) with the first description of the male

Sybille Seifried (1) , Gritta Veit-Köhler (2)

1 Institute of Biology and Environmental Sciences [Oldenburg]
2 DZMB - German Centre for Marine Biodiversity Research [Wilhelmshaven, Allemagne]

Boeck, 1873 is described from samples collected in the course of a colonisation experiment in Kongsfjorden, Spitsbergen (2003–2005). The male of , the type-species of the genus is described for the first time. can be distinguished from its congeners by its caudal rami (1.4 times longer than wide) and by its P5 (exopod longer than wide, inner terminal seta of exopod longest, inner seta of baseoendopod longer than outer one and surface seta rigid and curved). Variability within the species is rather small as only the length of some setae is slightly different. Lang, 1965, Sars, 1920, Soyer, 1973 and Arlt, 1983 are closely related to . Some details of the morphology, such as the body ornamentation and the longer hair-like pinnules on the spines of the swimming legs, are very difficult to observe even with maximum magnification. With certainty, is distributed near the Norwegian coast (Oslo Fjord to Trondheim Fjord), the Swedish coast (Skagerak to Öresund), around Spitsbergen and around the polar islands north of Grinnelland (Canadian Arctic Archipelago near Baffin Bay). Records of from the Kara Sea (near Novaya Zemlya), near Franz Joseph Land, Iceland, Greenland, the British Isles and from deep waters of the North Sea have to be confirmed.

Mots clés: Species redescription; Male; Spitsbergen

Sybille Seifried, Gritta Veit-Köhler. Redescription of Boeck, 1873 (Copepoda: Harpacticoida: Ectinosomatidae) with the first description of the male. Helgoland Marine Research, 2009, 64 (1), pp.1-20. ⟨10.1007/s10152-009-0165-8⟩. ⟨hal-00535199⟩