尖刺剑蟹新种（Xiphonectes aculeatus sp. nov.），一种来自马达加斯加的新游泳蟹（甲壳纲：十足目：梭子蟹科）
Xiphonectes aculeatus sp. nov., a new swimming crab (Crustacea: Decapoda: Portunidae) from Madagascar.
作者信息
Koch Milan, ĎuriŠ ZdenĚk
机构信息
Department of Biology and Ecology, and Institute of Environmental Technologies, University of Ostrava, Chittussiho 10, 710 00 Ostrava, Czech Republic..
出版信息
Zootaxa. 2019 Feb 3;4551(4):455-462. doi: 10.11646/zootaxa.4551.4.5.
Here we describe a new species of Xiphonectes A. Milne-Edwards, 1873 (Brachyura: Portunidae) from southern Madagascar. Xiphonectes aculeatus sp. nov. is morphologically most similar to X. latibrachium (Rathbun, 1906) from Hawaii, and X. paralatibrachium Crosnier, 2002, from the Marquesas Islands, French Polynesia. All three species have a carapace with six anterolateral teeth, a long spine on the inner dorsal margin of the cheliped carpus, and a produced, flattened, anterior region on the third maxilliped merus. Among these species, Xiphonectes aculeatus sp. nov. is easily distinguished by the acutely produced posterodistal angle on the meri of its swimming legs, dorsal and marginal structures on its carapace, and most notably, the shape of its frontal teeth.
在此，我们描述了一种来自马达加斯加南部的新物种——剑螯蟹属（Xiphonectes）A.米尔恩 - 爱德华兹，1873年（短尾派：梭子蟹科）。新物种尖刺剑螯蟹（Xiphonectes aculeatus sp. nov.）在形态上与来自夏威夷的宽臂剑螯蟹（X. latibrachium，拉思本，1906年）以及来自法属波利尼西亚马克萨斯群岛的似宽臂剑螯蟹（X. paralatibrachium，克罗斯尼尔，2002年）最为相似。这三个物种的头胸甲都有六个前侧齿，螯足腕节内缘有一根长刺，第三颚足的基节有一个突出、扁平的前部区域。在这些物种中，尖刺剑螯蟹新物种很容易通过其游泳足基节上尖锐突出的后远端角、头胸甲上的背侧和边缘结构，最显著的是其额齿的形状来区分。
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