Eusiridae

摘要

An eusirid amphipod was found around Lizard Island on the Great Barrier Reef. It is described as Tethygeneia aff. pacifica. It has large eyes. Gnathopods 1 and 2 are subequal, their carpal lobes are only weakly produced, and carpus and propodus are subequal in length on both appendages. The telson is only weakly tapering distally and has wide rounded apices. Tethygeneia pacifica was originally described from Hawaii by Schellenberg (1938) and later reported from other widely separated localities of the Indo-Pacific region (Madagascar, Society Islands, Red Sea and now the Great Barrier Reef). Specimens found in these locations slightly differ from each other and it is not clear if all these populations represent one single species.