Onisimus simus Gurjanova, 1962, Gurjanova, 1962

Berge, Jørgen, Vader, Wim & Johnsen, Jan Roger, 2007, Studies on the genus Onisimus Boeck, 1871 (Crustacea, Amphipoda, Uristidae) II. The barentsi and edwardsii groups, Zootaxa 1410, pp. 55-68: 64-65

publication ID

http://doi.org/ 10.5281/zenodo.175595

publication LSID

lsid:zoobank.org:pub:625CA219-7A8F-4783-A87D-0100A3D530C3

persistent identifier

http://treatment.plazi.org/id/03A08799-6442-FF99-FF52-A734FC8EFDD9

treatment provided by

Plazi

scientific name

Onisimus simus Gurjanova, 1962
status

 

Onisimus simus Gurjanova, 1962  

Onisimus simus Gurjanova, 1962: 62   .

Type locality

Okhotsk Sea

Distribution

Okhotsk Sea ( Gurjanova 1962), Storfjorden at Spitsbergen (Bryazgin, 1973).

Biology

Maximum length 10.5mm. Depth: 125m (Type-locality). Bryazgin (1973) collected the species in Storfjorden at a depth of 100m in cold water (-1.8°C). Ovigerous females had a maximum of 9 eggs.

Remarks

The type material of this species was examined in the Zoological Institute of St. Petersburg, but the material was not suitable for making detailed descriptions. Professor Valery Bryazgin (1973), however, gives the following details about his Storfjorden specimen.

Barents sea specimens vary from Gurjanova’s description of Okhotsk Sea material in several ways: The surface is without granular black pigment, but has small pits with microscopic setules. Eyes light, almost invisible in alcohol. Antenna 1 peduncle article 1 with large dorso-distal protuberance, that is longer than peduncle articles 2 + 3. Peduncle article 1 with 3 plumose setae on ventrodistal margin. Flagellum with first article much longer than in typical material, and with 2 parallel rows of slender setae, flagellum 10 - to 11 - articulate, accessory flagellum with 6 articles. Antenna 2 flagellum with 14 articles.

Pereopod 1–2: Typical for the most part, but pereopod 2 propodus with oblique palm, distal protuberance present on palm (contra Gurjanova’s description). Telson   cleft 1 / 3, lobes with distal bifurcation, with small setae in the “bifurcations”.

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Amphipoda

Family

Uristidae

Genus

Onisimus

Loc

Onisimus simus Gurjanova, 1962

Berge, Jørgen, Vader, Wim & Johnsen, Jan Roger 2007
2007
Loc

Onisimus simus

Gurjanova 1962: 62
1962