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black sea red data book - Department of Biology

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Apseudopsis ostroumovi Bacescu & Carausu, 1947<br />

Synonyms: Apseudes coecus Ostr.1803; Apseudes latreillei var. coecus Sowinsky<br />

1895, Guryanowa 1936, Bacescu, 1940<br />

Common names: Georgian: Tskhlis viruka<br />

Order ANISOPODA (TANAIDACEA)<br />

Family APSEUDIDAE<br />

Taxonomic description. Body flattened; frontal side <strong>of</strong> carapace toothed. Eyes<br />

absent. Third thoracic segment fused with head capsule. Antenna II with two<br />

flagella. Chelipeds thin, flattened in female, thicker in male. First pair <strong>of</strong> pereiopods<br />

with 6-8 spines; the second and other pairs <strong>of</strong> pereiopods are walking legs.<br />

Ectopodite <strong>of</strong> uropod with three articles.Endopodite <strong>of</strong> uropod with 33-36 (female) up<br />

to 45 articles (male). Size: length <strong>of</strong> female c. 7 mm; <strong>of</strong> male - 6.7 mm.<br />

IUCN Status<br />

World level:<br />

Black Sea Regional level:<br />

Subregion level: LR<br />

Distribution, Habitat type, Critical habitats, Limiting factors. Found in the<br />

circalittoral zone and silty bottoms, at 35-100 m depths. Frequent in Modiolus<br />

biocoenosis. Sensitive to pollution and eutrophication.<br />

<strong>Biology</strong>. An iliophilic species. Reproduction in the warm <strong>sea</strong>son <strong>of</strong> the year; a<br />

female spawns c. 85 eggs. A benthic organisms without planktonic larval stages.<br />

131

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