Glorieusella gen. nov.

Type species. Thrombasia incerta Ledoyer, 1986, by monotypy.

Etymology. The name Glorieusella refers to the Îles Glorieuses, the type locality of the type species.

Included species. Glorieusella includes one species: G. incerta (Ledoyer, 1986) .

Diagnostic description. Antenna 1 flagellum article 1 lacking robust seta on distal margin; accessory flagellum forming cap. Antenna 2 flagellum articles 3–5 slender, without brush setae on the anterior margin. Mandibular incisor straight; molar (?) with reduced column and convex triturating surface (a button); palp attached midway. Maxilla 1 ST-7 and ST-D unknown. Maxilliped outer plate with (?) single apical robust seta. Gnathopod 1 parachelate; coxa large, nearly as long as coxa 2, not tapering; carpus slightly longer than propodus; propodus palm minute, transverse, straight. Pereopod 4 coxa with weakly developed posteroventral lobe. Uropod 2 inner ramus constricted. Uropod 3 rami without plumose setae in the female (male unknown). Telson weakly cleft.

Remarks. Glorieusella and Metambasia are the only genera of the Tryphosa group that have a minutely parachelate first gnathopod. They are easily separated, as Glorieusella has a large, non-tapering gnathopod 1 coxa, whereas Metambasia has a vestigial gnathopod 1 coxa.

Distribution. Indian Ocean.