A remarkable new species of the pelagic shrimp genus Parapasiphae Smith, 1884 (Crustacea: Decapoda: Pasiphaeidae) with double eyes

摘要

Parapasiphae kensleyi, a new species of shrimp (Crustacea: Decapoda: Pasiphaeidae) collected from abyssopelagic waters of the North Pacific Ocean, is described. The new species differs from other members of the genus in having ocular peduncles lacking ocular tubercles. Each ocular peduncle has two separate unpigmented corneas; thus, the shrimp appears from external morphology to have four eyes. A key to the known species of Parapasiphae is provided. A brief discussion is included of possible functions for the unique double eyes seen in this new species.