Elasmopus, Costa, 1853

Horton, Tammy, 2008, Amphipoda from marine caves of Hong Kong Island, Journal of Natural History 42 (9 - 12), pp. 825-854 : 837

Elasmopus sp. A ( aff. molokai / piikoi )

Elasmopus sp. A (aff. lapu) Moore, 1990.

Material examined

Cape D’Aguilar, Hong Kong Island, on Gelidium pusillum , two specimens, one male, one damaged and indeterminate, NHM Reg. Nos. 2004.2947–2948.

Remarks

The most distinctive characteristic of this species is the 1-articulate, lanceolate, setose flagellum of antenna 2. Gnathopod 2 of this species resembles that of Elasmopus molokai Barnard, 1970 , and E. piikoi Barnard, 1970 . However, Elasmopus sp. A lacks the proximal palmar defining process. Uropod 3 outer ramus apex is spinose, closer to Elasmopus molokai than E. piikoi . This species is probably synonymous with Elasmopus sp. A of Moore (1990) since both the current material and Moore’s species lack the castellated posterior margin of pereopod 7 basis and the dense setation of the posterior margin of male gnathopod 2 propodus.