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Heller, 1865

Description:
Epimeral plate 3 distal angle quadrate, posterior margin weakly crenulate. Eyes rounded, black in colour. Antenna 1 about reaching end of peduncle article 4 of antenna 2, flagellum about 7-articulate. Male antenna 2 up to half body length, peduncle robust, flagellum up to about 22-articulate; female antenna 2 shorter and less robust. Male gnathopod 1 merus with very small lobe on posterior margin, carpus and propodus with prominent posterior lobes, palm transverse, dactylus shorter than palm. Female gnathopod 1 merus, carpus and propodus without posteromarginal lobes, dactylus longer than palm. Male gnathopod 2 basis robust, ischium with lobe on anterior margin, propodus very large, oval, palm oblique, spinose, markedly sinuous, dactylus moderately robust with inner margin sinuous matching palm. Female gnathopod 2 basis broad proximally with anterior margin strongly convex, merus, carpus and propodus with prominent posterior lobes, dactylus very small. Pereopod 7 basis with large posterior lobe, posterior margin weakly crenulate, propodus very long and slender. Uropods. Telson longer than broad, distinctly cleft, each lobe with several small spines.

Size:
Up to 22 mm in male, 16 mm in female.

Colour:
Dark brown.

Habitat:
Semiterrestrial. A species found in moist habitats under stones or amongst damp vegetation, usually close to fresh or brackish water.

Distribution:
Mediterranean, Black Sea, Red Sea, Atlantic coast of North Africa and Europe to southern North Sea.

Source: Lincoln, 1979.

Orchestia cavimana