Diastylopsis Smith, 1880

Gerken, Sarah, 2015, New Zealand Diastylidae and Gynodiastylidae (Crustacea: Cumacea), Zootaxa 4031 (1), pp. 1-77 : 42

Diastylopsis Smith, 1880

Type species. Diastylopsis dawsoni Smith, 1880 .

Diagnosis. Female and subadult male. Carapace elongate. Pereonites 2 and 3 separated ventrally. Pereonites 3– 4 may be fused dorsally, free ventrally. Pereopods 3–4 with or without rudimentary exopods in female in the female. Telson with post-anal portion, with or without lateral setae, 2 or rarely 3 terminal setae.

Adult male. Antennae extending to end of pleon. With 2 pairs of pleopods.

Remarks. Nearly half of the species of Diastylopsis are known from New Zealand waters.

All species. Diastylopsis annulata ( Zimmer, 1902) , D. aspratilis n. sp., D. bicarina n. sp., D. crassior Calman, 1911 , D. dawsoni Smith, 1880 , D. elongata Calman, 1911 , D. goeki Roccatagliata & Heard, 1992 , D. incompta Gerken, 2014 , D. senta Gerken, 2014 , D. tenuis Zimmer, 1936 , D. thilenuisi ( Zimmer, 1902) , D. trisetosa Gerken, 2014 .

New Zealand species. Diastylopsis aspratilis n. sp., D. bicarina n. sp., D. crassior Calman, 1911 , D. elongata Calman, 1911 , D. thilenuisi ( Zimmer, 1902) .