A new species of Pseudopandarus Kirtisinghe, 1950 (Copepoda: Siphonostomatoida: Pandaridae) from sharks of the genus Squalus L. in New Caledonian waters
A new species of Pseudopandarus Kirtisinghe, 1950 (Copepoda: Siphonostomatoida: Pandaridae) from sharks of the genus Squalus L. in New Caledonian waters
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Pseudopandarus Kirtisinghe 新种，1950 年（桡足类：管口目：熊猫科），来自新喀里多尼亚水域的角鲨属鲨鱼
作者：
James P. Bernot;G. Boxshall
本文描述了从角鲨属（SqualusL.）（角鲨目：角鲨科）。的标本。sp.，分别采自Squalus bucephalus Last，Séret & Pogonoski和S. melanurus Fournauir & Rivaton在新喀里多尼亚沃茨，第一个寄生桡足类被描述从任何主机物种。这是第八个命名的种，1950年，也是第一个被描述的鲨鱼。拟潘氏蟹与澳洲拟单胞菌（P. australis Cressey & Alberfendorfer，1988）、长拟单胞菌（P. longus（Gnanamuthu，1951）Cressey，1967）和远海拟单胞菌（P. pelagicus Rangnekar，1977）的区别在于其雌性生殖复合体隐藏在一个细长的后生殖盾下，后边缘有三裂。根据第四足内足的骨架和背生殖盾的比例，它可以与P. gracilis Kirtisinghe，1950和P. scyllii Yamaguti & Yamasu，1959相区别。该新种在拟潘虫属已知种中是唯一的，在其第4腿的远侧内足节上仅具有1个刚毛分子。除了描述新的物种，所有种类的Pseudopandarus的主机协会进行了审查，并就性二型性和附着模式的意见。一个关键的物种被认为是有效的。
Both sexes of a new species of pandarid copepod are described from sharks of the genus Squalus L. (Squaliformes: Squalidae). Specimens of Pseudopandarus cairae n. sp. were collected from Squalus bucephalus Last, Séret & Pogonoski and S. melanurus Fourmanoir & Rivaton in New Caledonian waters, the first parasitic copepod to be described from either host species. This is the eighth nominal species of Pseudopandarus Kirtisinghe, 1950 and the first to be described from a shark of the order Squaliformes. Pseudopandarus cairae n. sp. is easily distinguished from P. australis Cressey & Simpfendorfer, 1988, P. longus (Gnanamuthu, 1951) Cressey, 1967, and P. pelagicus Rangnekar, 1977 in having the female genital complex concealed beneath an elongate dorsal genital shield with a trilobed posterior margin. It can be distinguished from P. gracilis Kirtisinghe, 1950 and P. scyllii Yamaguti & Yamasu, 1959 by the armature of the leg 4 endopod and by the proportions of the dorsal genital shield. The new species is unique among known species of Pseudopandarus in its possession of only 1 setal element on the distal endopod segment of leg 4. In addition to describing the new species, the host associations of all species of Pseudopandarus are reviewed and observations are made regarding sexual dimorphism and mode of attachment. A key to the species considered valid is provided.