CONTRIBUTIONS TO THE KNOWLEDGE OF LEUCOSIIDAE VII. LIUSIUS GEN. NOV. (CRUSTACEA, BRACHYURA)

Abstract

A new genus, Liusius. is established for the East Asian leucosiid crab Leucosia longimaculata Chen & Fang, 1991. The new genus differs from Leucosia s. str. and allied genera in having the shaft of the male first gonopod coiled eight times on its axis, bearing a distal setose lobe topped by a digitate process, and prominently swollen female vulvae opening distad. The molecular phylogenetic analysis of the 16S rDNA supports the morphological observations. The species is redescribed and illustrated.