Review of the fish parasitic genus Elthusa Schioedte & Meinert, 1884 (Crustacea, Isopoda, Cymothoidae) from South Africa, including the description of three new species
Review of the fish parasitic genus Elthusa Schioedte & Meinert, 1884 (Crustacea, Isopoda, Cymothoidae) from South Africa, including the description of three new species
复制标题
鱼类寄生Elthusa Schioedte属的综述
DOI：
10.3897/zookeys.841.32364
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发表时间：
2019
期刊：
影响因子：
1.3
通讯作者：
K. A. Hadfield
中科院分区：
文献类型：
--
作者：
S. van der Wal;Nico J. Smit;K. A. Hadfield
附鳃钩蟹属Elthusa Schioedte & Meinert，1884是一个全世界分布的属，共有36种，其中包括本文所述的3种。Elthusaraynaudii（Milne Edwards，1840）是唯一在非洲南部被描述的物种。所有南非的材料，在国家自然历史博物馆，巴黎，法国（MNHN）和Iziko南非博物馆，开普敦（SAMC）确定为，或似乎属于，Elthusa进行了检查。四个物种被确定，Elthusaraynaudii和三个物种被证明是未描述的。Elthusaxenasp. n.可以通过均匀圆形的pereonite 1前缘，大致矩形的pleotelson和窄圆形的尾足尖延伸到超过pleotelson长度的一半来区分。刺叶草n.通过产生的和窄圆形的头部前缘，短于pleotelson长度一半的急性尾足，以及具有内侧突起的pereonite 1前缘来识别。Elthusarotundasp. n.其特征是圆形的身体形状，宽圆形的尾足尖，以及在第7节的肢节和腕骨的近端和侧缘上的突起。南非Elthusa物种的关键提供，连同一个表格总结的主机和地方的33个以前已知的Elthusa物种。
Abstract The branchial-attaching cymothoid genus, Elthusa Schioedte & Meinert, 1884 is a genus with a worldwide distribution of 36 species, including the three species described here. Elthusaraynaudii (Milne Edwards, 1840) is the only species that has been described from southern Africa. All South African material held at the National Museum of Natural History, Paris, France (MNHN) and the Iziko South African Museum, Cape Town (SAMC) identified as, or appearing to belong to, Elthusa was examined. Four species were identified, Elthusaraynaudii and three species that proved to be undescribed. Elthusaxenasp. n. can be distinguished by an evenly rounded pereonite 1 anterior margin, a roughly rectangular pleotelson, and narrowly rounded uropod apices that extend to more than half the length of the pleotelson. Elthusaacutinasasp. n. is identified by the produced and narrowly rounded cephalon anterior margin, acute uropods that are shorter than half the length of the pleotelson, and pereonite 1 anterior margin with medial projection. Elthusarotundasp. n. is characterised by the round body shape, broadly rounded uropod apices, and protrusions on the proximal and lateral margins of the merus and carpus of pereopod 7. A key to the South African Elthusa species is provided, together with a table summarising the hosts and localities of the 33 previously known species of Elthusa.