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Bonnier, 1893

Description:
Urosome segment 1 with the dorsal margin only weakly rounded in female; in male with a distinct depression and a rounded hump. Epimeral plate 3 quadrate, distal angle narrowly rounded. Head with very broadly rounded lateral lobes; eyes very large, oval. Antenna 1 peduncle article 1 large, articles 2 and 3 compressed, flagellum about 10-articulate with article 1 only moderately enlarged; accessory flagellum slender, 5-articulate. Antenna 2 in female only slightly longer than antenna 1, flagellum about 10-articulate, in male antenna 2 twice the length of antenna 1; Antenna 1 and 2 in male with calceoli. Gnathopod 1 propodus equal to the length of the carpus, narrowly rectangular, palm short, oblique, minutely toothed, delimited by a pair of large spines, dactylus with a large tooth on the inner margin. Gnathopod 2 propodus oval, minutely subchelate, palm minutely toothed. Pereiopods 5 to 7 basis broadly expanded, posterior margin finely toothed. Uropods 1 and 2 spinose, rami about equal in length; uropod 3 inner ramus naked and equal to the length of article 1 of the outer ramus, outer margin of outer ramus with a few spinules. Telson triangular, cleft to three-quarters of its length, each lobe with two lateral and one apical spinule.

Size:
Up to about 4 mm.

Colour:
Whitish, with a few red speckles.

Habitat:
Shallow water; depth range from 10 to 190 metres.

Distribution:
North-East Atlantic, west and south Norway to the English Channel.

Tryphosella sarsi