Genus Nonnullidens Grant & Peters, 1993

Diagnosis.

Ventral lamella of gills highly reduced or absent, ventral lamella of first gill with <8 processes, even absent in some species; claw with generally 3–6 teeth, rarely up to 8; posterior margin of abdominal segment VIII generally without denticles; posterolateral expansions on abdominal segments VIII – IX, rarely VII – IX.

Composition.

Nonnullidens alvarezi sp. nov. [Papua New Guinea], N. anga sp. nov. [Papua New Guinea], N. billhilli Grant & Peters, 1993 [Papua New Guinea, New Britain], N. boonsoongi sp. nov. [Papua New Guinea], N. cozzarolae sp. nov. [Papua New Guinea], N. depapricus Kluge, 2013 [Indonesia, Papua], N. fuyugensis sp. nov. [Papua New Guinea], N. hsui (Peters & Tsui, 1972) [Papua New Guinea], N. kaltenbachi sp. nov. [Papua New Guinea], N. marcelae sp. nov. [Indonesia, Papua], N. mariae (Peters & Tsui, 1972) [Papua New Guinea], N. moiorum sp. nov. [Indonesia, Papua], N. niger Kluge, 2013 [Indonesia, Papua], N. reductus Kluge, 2013 [Indonesia, Papua], N. silvaepumilorum sp. nov. [Papua New Guinea], N. variegatus Kluge, 2013 [Indonesia, Papua]

Distribution.

Species of the genus Nonnullidens are restricted to New Guinea; N. billhilli is also reported from New Britain (Grant and Peters 1993).