Gammarellidae Bousfield, 1977

Myers, A, 2013, A Phylogeny and Classification of the Senticaudata subord. nov. (Crustacea: Amphipoda), Zootaxa 3610 (1), pp. 1-80 : 57-58

Gammarellidae Bousfield, 1977

Type genus. Gammarellus Herbst, 1793 .

Diagnostic description. Body laterally compressed. Eyes present, well developed, reniform or subrectangular. Antennae 1–2 calceoli gammarellid ( type 6). Antenna 1 shorter than or subequal in length to antenna 2; peduncular article 1 longer than article 2; article 2 longer than article 3; article 3 shorter than article 1; peduncular articles 1–2 not geniculate; accessory flagellum present or absent; if present short or minute. Antenna 2 peduncular article 1 not enlarged. Mandible molar triturative; palp symmetrical. Maxilla 1 basal endite setose along medial margin or apically setose; palps symmetrical. Maxilla 2 basal endite with or without oblique setal row. Labium inner lobes vestigial or absent. Coxal gills on pereopods 2–7, not stalked; sternal gills absent; sternal blisters absent; oostegites fringing setae simple. Gnathopod 1 subchelate; similar in males and females (not sexually dimorphic); similar in size to, or larger (or stouter) than gnathopod 2; propodus palm without robust setae along palmar margin. Gnathopod 2 subchelate; similar in males and females (not sexually dimorphic); carpus not produced along posterior margin of propodus, projecting between merus and propodus. Pereopods 3–4 not sexually dimorphic. Pereopod 4 with well developed posteroventral lobe or with small posteroventral lobe. Pereopod 5 shorter than or subequal in length to pereopod 6; coxa equilobate or with large anteroventral lobe. Pereopod 7 longer than pereopod 5. Pleonites 1–3 pleonite 3 with dorsal carina or each with dorsal carina or carinae or without dorsal carinae. Urosomites 1–3 free; without slender or robust dorsal setae. Urosomite 1 with or without large distoventral robust seta. Urosomite 2 without dorsal setae. Uropod 1 without basofacial robust setae. Uropod 3 not sexually dimorphic; biramous, with plumose setae or without plumose setae; endopod subequal in length to exopod. Telson moderately cleft , notched , emarginate or entire ; dorsal or lateral robust setae present, or absent; apical robust setae absent.

Habitat. Marine, epigean.

Included genera. Austroregia J.L. Barnard, 1989 ; Chosroes Stebbing, 1888 ; Gammarellus Herbst, 1793 ; Gondogeneia J.L. Barnard, 1972 a.

Remarks. Generic structure according to J.L. Barnard ( 1989).

Distribution. Cosmopolitan.