Carapace quite large (for the genus); lateral outline subtrapezoidal, slightly sinuous, rectilinear; dorsal angle quite conspicuous; posterodorsal margin of LV conspicuously sinuous; posterior angle acute in RV, more obliquely rounded in LV; ventral margin slightly sinuous; anterior margin narrowly rounded; posterodorsal margin concave; posterior angle acute. Vestibules wide; zone of concrescence fairly narrow; radial pore canals straight. In all specimens studied herein, LV larger than, and overlapping, RV anterodorsally, posterodorsally, and ventrally. Antennula and antenna with relatively long, slender podomeres and setae. Very slight suture between podomeres II and III of antennula visible only ventrally. Length of podomere IV of antenna less than two times length of podomere III. Exopodite of mandibula with one reduced, plus seven medium-sized setae. Vibratory plate of maxillula with two long and one short strahlen, basal endite with two long, ventral setae. Exopodite of fifth limb with three proximal and six to eight distal setae; podomere V of female fifth limb (= palp podomere IV) with short and thick, terminal claws, dorsal one shortest, medial and dorsal ones medium-sized, subequal. Male fifth limb very asymmetrical, right appendage with one very long and thick modified seta (= peg), plus one short, modified seta (= peg), and one short, simple seta on podomere II (palp podomere I); podomere III smoothly curved; left appendage with two short, modified setae (= pegs), and one short, simple seta on podomere II (palp podomere I); podomere III pointed at 90°. Podomere VI of sixth limb with one very short seta, and one long plus one medium-sized claw. Furca with barbed, symmetrical, with thick rods; terminal setae thick and short; no suture between terminal setae and rods. Hemipenis subtrapezoidal; copulatory process trisegmented, with hook-shaped terminal element; distal tip of posterior ramus fairly straight. Zenker’s organ with robust, fairly thick central tube and medium-sized terminal bulb; vas deferens arranged in few loops, which are shorter than the length of the chitinous tube.