Gammarus Fabricius, 1775

Zamanpoore, Mehrdad, Grabowski, Michal, Poeckl, Manfred & Schiemer, Friedrich, 2011, Taxonomic review of freshwater Gammarus (Crustacea: Amphipoda) from Iran, Zootaxa 3140, pp. 1-14 : 3

Gammarus Fabricius, 1775

Gammarus Fabricius, 1775: 418 ; G. Karaman, 1982: 229; Barnard & Barnard, 1983: 463. Rivulogammarus S. Karaman, 1931: 60 .

Carinogammarus S. Karaman, 1931: 60 .

Gammarus (Fluviogammarus) S. & G. Karaman, 1959: 206.

Lagunogammarus Sket, 1971a: 6 (typus generis: Gammarus zaddachi Sexton, 1912 ). Typus generis: Cancer pulex Linnaeus, 1758 (selected by Latreille, 1810).

Body laterally compressed. Coxal plates moderately large with rounded margins; coxal plate 4 posteriorly excavated. Head with small rostrum in many species; lateral lobes rounded or truncated. Eyes variable in size and shape: from small and rounded to large elongate and reniform. First antennae usually elongated, with a developed accessory flagellum; calceoli present or absent on second antennae. Medial margin of inner plate in maxilla 1 and 2 densely setose. Gnathopods 1 and 2 subchelate; subequal or gnathopod 2 larger than 1. Pereopods with spines, with or without setae. Rami of uropod 3 often spinose and totally or partially setose, with various degree of plumosity. Telson cleft, lobes with lateral and apical spines, with or without lateral and apical setae. Urosome segments 1–3 with groups of tiny dorsal spines, intermixed with short setae or not. Postero-distal corner of epimeral plates 2–3 rounded, quadrate or acute.