Bruunosa Barnard & Karaman, 1987

Kilgallen, N. M. & Lowry, J. K., 2014, The Tryphosa group (Crustacea: Amphipoda: Lysianassoidea: Lysianassidae: Tryphosinae), Zootaxa 3768 (5), pp. 501-545 : 503-504

Bruunosa Barnard & Karaman, 1987

Bruunosa Barnard & Karaman, 1987: 864 .― Barnard & Karaman, 1991: 472.

Type species. Tryphosa bruuni Dahl, 1959 , original designation.

Included species. Bruunosa includes one species: B. bruuni ( Dahl, 1959) .

Diagnostic description. Antenna 1 flagellum article 1 robust seta on distal margin unknown; accessory flagellum forming cap. Antenna 2 flagellum article 3–5 slender, brush setae unknown. Mandibular incisor straight; molar a fully triturating column; palp attached midway. Maxilla 1 ST-7 (?) cuspidate along distomedial margin; ST- D slender, apically cuspidate. Maxilliped outer plate with multiple apical robust setae. Gnathopod 1 subchelate; coxa large, nearly as long as coxa 2, not tapering; carpus slightly longer than propodus; propodus palm acute, straight. Pereopod 4 coxa with weakly developed posteroventral lobe. Uropod 2 inner ramus constricted. Uropod 3 rami without plumose setae in female (male unknown); inner ramus slender, lanceolate. Telson moderately cleft.

Remarks. Bruunosa appears to be most similar to Tryphosa . They are the only genera in the group to have a subchelate gnathopod 1 with a non-tapering coxa as large as the gnathopod 2 coxa. Bruunosa has the carpus of gnathopod 1 longer than the propodus (shorter in Tryphosa ) and no plumose setae on the rami of the female uropod 3 (present in Tryphosa ).

Distribution. South Pacific Ocean.