Fuegiphoxus, (EMEND. AFTER BARNARD & BARNARD 1980)

Chiesa, Ignacio L. & Alonso, Gloria M., 2011, Redescription and generic assignment of Fuegiphoxus uncinatus (Chevreux, 1912) (Crustacea, Amphipoda, Phoxocephalidae), Zoosystema 33 (2), pp. 219-233 : 230

KEY TO THE SPECIES OF FUEGIPHOXUS (EMEND. AFTER BARNARD & BARNARD 1980)

1. Epimeron 3 posteroventral corner with moderate acute hook; pereopod 7, basis almost reaching apex of carpus; maxilliped, inner plate with two thick apical robust setae ........ ................................................................................................................... F. uncinatus

— Epimeron 3 posteroventral corner rounded or broadly quadrate; pereopod 7, basis not reaching apex of carpus; maxilliped, inner plate with one thick apical robust seta ....... 2

2. Gnathopod 2, carpus elongate, subequal in length to propodus ..................................... ....................................................................................... F. abjectus (only male known)

— Gnathopod 2, carpus short, less than half propodus length ........................................ 3

3. Epimera 1-2 with small posteroventral tooth; facial setal formula on article 4 of antenna 2 = 4-4-1; urosome small; uropod 3 short ..................................................... F. inutilus

— Epimera 1-2 rounded posteroventrally; facial setal formula on article 4 of antenna 2 = 3-3-2; urosome large; uropod 3 elongate .................................................... F. fuegiensis