1 - Characters following not combined : Prosome about 3 times longer than urosome. Cephalosome with slightly projecting and rounded anterior corners and well developed lateral spinous projections; anal somite about as long as wide; caudal rami 11.7 times longer than wide and bowed outwards at base, leaving elliptical space between rami proximally.
2 - P1 with 3-segmented endopod.
3 - Cephalosome without lateral spinous projections.
4 - Genital double-somite symmetrical (dorsal view).
5 - Anal somite much shorter than caudal ramus.
6 - P5 with 3-segmented endopod.
7 - Characters not combined between distal 3 to 4 segments of A1 reaching beyond tip of caudal ramus and body length less than 3mm.
8 - Cephalosome without projections.
9 - Terminal setal element of P5 about equal to length of 3rd exopodal segment; body length over 2 mm.
10 - Caudal rami about 7 times longer than wide.
11 - Genital double-somite about 1.2 times longer than wide.