Tosapusia bismarckeana is a species of sea snail, a marine gastropod mollusk, in the family Costellariidae, the ribbed miters.
The holotype of the species (MNHN IM-2013-19695), measured 35.1 mm.
Type Locality : Papua New Guinea, Bismarck Sea, off Bagabag Island, PAPUA NIUGINI, station CP3979.
This species occurs in the following locations: