Amphipoda Latreille, 1816

Andrade, Luiz F., Souza-Filho, Jesser F. & Senna, André R., 2022, A new species of Leptophoxoides Barnard, 1962 (Amphipoda, Phoxocephalidae) from the Brazilian northeastern continental slope, Papéis Avulsos de Zoologia (Pap. Avulsos Zool., S. Paulo) 62, pp. 1-10 : 2

Order Amphipoda Latreille, 1816

Suborder Amphilochidea Boeck, 1871 Family Phoxocephalidae G.O. Sars, 1891 Subfamily Phoxocephalinae G.O. Sars, 1891 Genus Leptophoxoides Barnard, 1962

Type species: Leptophoxoides molaris Barnard, 1962 .

Amended diagnosis (after Senna, 2010): Rostrum well developed, constricted, sharp, and deflexed. Cephalic dorsal keel present. Antenna 1 peduncular article 2 short, ventral setae confined distally. Antenna 2 peduncular article 1 not ensiform, article 4 with one row of facial setae. Mandible incisor with three to five teeth, right lacinia mobilis bifid, molar triturative; palp hump small, article 3 apex truncate. Maxilla 1 inner plate naked, palp 1-articulate. Maxilla 2 weakly setose, inner plate wid- er than outer. Maxilliped inner and outer plates small, poorly armed, palp article 3 with apex strongly protuberant, article 4 elongated, apical nail distinct. Coxa 1 expanded anteriorly, anterior margin slightly concave. Gnathopods 1 and 2 dissimilar, carpus with eusirid attachment, palm acute; gnathopod 2 stronger than gnathopod 1, propodus broadened. Epimeral plate 3 posteroventral corner rounded. Urosomite 3 smooth. Uropod 1 peduncle without inter-ramal spine, rami not continuously with robust setae to apex. Uropod 3 outer ramus longer than peduncle, article 2 elongated, bearing up to two apical setae. Telson elongated and deeply cleft.

Composition: The genus is composed by 2 species + 1 new species: Leptophoxoides longisetae sp. nov.; Leptophoxoides marina Senna, 2010 ; and Leptophoxoides molaris Barnard, 1962 .