Three new species of the Eriopisa group (Crustacea: Amphipoda: Eriopisidae) from Japan, with the description of a new genus Author Ariyama, Hiroyuki text Zootaxa 2015 3949 1 91 110 journal article 10.11646/zootaxa.3949.1.4 60b71b57-6ebd-42e4-9d9a-3689579bab1b 1175-5326 241799 22266A34-5663-4180-91F3-814AA12D8ABE Key to species of the Eriopisa group in Japan (excluding Eriopisa elongata sensu Nagata ) 1. Antenna 2 flagellum almost fused......................................................................... 2 - Antenna 2 flagellum not fused.......................................................................... 3 2. Eyes present, merus of pereopod 7 greatly expanded....................................... Victoriopisa ryukyuensis - Eyes absent, merus of pereopod 7 moderately expanded.................................. Victoriopisa wadai sp. nov. 3. Carpus of gnathopod 1 longer than propodus, palm transverse.................. Paraflagitopisa excavata gen. et sp. nov. - Carpus of gnathopod 1 shorter than propodus, palm oblique.................................................... 4 4. Posterodistal corners of bases in pereopods 5–7 rounded or weakly incised................. Psammogammarus mawatarii - Posterodistal corners of bases in pereopods 5–7 projected.......................... Psammogammarus lobatus sp. nov.