Ng Peter K L, Richer De Forges Bertrand
Tropical Marine Science Institute & Department of Biological Sciences, National University ofSingapore, Kent Ridge, Singapore 119260, Republic of Singapore.
Zootaxa. 2013;3718:357-66. doi: 10.11646/zootaxa.3718.4.5.
A new genus, Samadinia n. gen., and new species, Samadinia longispina n. sp., of deep-water epialtid spider crab is described from French Polynesia and New Caledonia. The new genus is superficially similar to Rochinia A. Milne-Edwards, 1875, but can be distinguished by having the dorsal surface of the carapace covered with small, rounded granules (versus with long spines or strong tubercles), well developed hepatic and lateral branchial spines (versus relatively shorter and weaker), a prominently constricted male thoracic sternite 4 (versus relatively broader with less prominent or without median constriction) and a proportionally broader male abdomen. A new species of Rochinia, R. granulosa n. sp., is also described from Papua New Guinea. It is easily distinguished from congeners its small adult size, the presence of numerous relatively large granules on the carapace and a relatively short hepatic spine.
本文描述了一个来自法属波利尼西亚和新喀里多尼亚的深水表层蜘蛛蟹新属——萨马迪尼亚属（Samadinia n. gen.）及新物种——长刺萨马迪尼亚蟹（Samadinia longispina n. sp.）。该新属在外观上与1875年命名的罗氏蟹属（Rochinia A. Milne-Edwards）相似，但可通过以下特征区分：头胸甲背面覆盖着小而圆的颗粒（而非长刺或强壮的瘤），肝刺和侧鳃刺发育良好（而非相对较短且较弱），雄性胸节腹甲4显著收缩（而非相对较宽且无明显中缢或无中缢），以及雄性腹部相对较宽。此外，还描述了一种来自巴布亚新几内亚的罗氏蟹新物种——粒状罗氏蟹（Rochinia granulosa n. sp.）。它易于与同属其他物种区分，其成年个体较小，头胸甲上有许多相对较大的颗粒，且肝刺相对较短。
