A NEW SPECIES OF GASTROSACCUS (MYSIDACEA) FROM WESTERN AUSTRALIA

WA Museum Records and Supplements | Updated 1 decade ago

Abstract
A new species of Gastrosaccus (Crustacea, Mysidacea) from Western Australia is described and illustrated. Gastrosaccus sorrentoensis sp. nov. is readily characterised by the fringe of fIlaments on the posterodorsal edge of the carapace and the prominent spinous process on the posterodorsal edge of the fifth abdominal somite. Gastrosaccus spinifer (Goes, 1864) is the only other member of the genus possessing both these characteristics, but in G. sorrentoensis the fringe of filaments extends around the entire border of the carapace emargination. Other morphological features separating the two species are noted.