Body rather laterally flattened ; urosome without dorsal processes, each segment with a pair of dorsal setae. Coxal plate 1 elongate, rounded distally, plates 1 to 5 with sparse marginal setae. Epimeral plates 1 to 3 rounded-quadrate, posterior margin weakly convex, distal margins with plumose setae. Eyes moderately large, rounded-oval. Antenna 1 little longer than antenna 2, about half the body length, flagellum slender, up to about 15-articulate; accessory flagellum small, 1-articulate. Antenna 2 peduncle article 5 a little shorter than article 4, flagellum up to about 10-articulate. Female gnathopod 1 propodus much broader than the carpus, about equal length, palm convex, almost transverse, dactylus slightly longer than the palm. Male gnathopod 1 much more robust than the female one, carpus and propodus large, dactylus robust and irregularly curved. Gnathopod 2 anterior margin of basis with long plumose setae, propodus more than half the length of the carpus, dactylus weakly curved. Pereiopods 5 to 7 with a few spines and many long setae; pereiopod 6 basis posterior margin with short plumose setae; pereiopod 7 basis sparsely setose. Uropods 1 and 2 spinose, outer ramus little shorter than inner one; uropod 3 rami about equal, outer ramus with tuft of setae. Telson short and broad, with prominent distolateral angles.
Up to about 5 mm.
Bright golden yellow, speckled with brown, and brown patches on the coxal plates and the bases of the pereiopods.
Often found in brackish waters, in rivers, creeks and ditches. Locally common.
North-East Atlantic, North Sea, Baltic; north coast of Europe from south Finland to the Mediterranean and Bosphorus.