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The marine nematode genus Pseudonchus Cobb, 1920 with descriptions of Cheilopseudonchus, n. g. and Pseudonchus kosswigi, n. sp.
Murphy, D.G. (1964). The marine nematode genus Pseudonchus Cobb, 1920 with descriptions of Cheilopseudonchus, n. g. and Pseudonchus kosswigi, n. sp. Mitt. Hamb. Zool. Mus. Inst. Kosswig-Festschrift: S113-S118
In: Mitteilungen aus dem Hamburgischen zoologische Museum und Institut. Hamburgisches Zoologisches Museum und Institut: Hamburg. ISSN 0072-9612, more
Peer reviewed article

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Keywords
    New species; Taxonomy; Nematoda [WoRMS]; Marine

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  • Murphy, D.G.

Abstract
    Species within the genus Pseudonchus are few and have been reported only rarely. Three species were reported by C.A. Allgen from Norwegian waters, (P. norwegicus Allgen, 1933. P. longus Allgen, 1949, and P. donsi Allgen, 1948), the descriptions and illustrations of which are very wanting in detail and are of questionable scientific value. P. norwegicus has been reported only as a juvenile. Males are known only for P. rotundicephalas Coss, 1920, the only adequate description of which was provided by Gerlach (1953), and for P. kosswigi, n. sp. P. symmetricus De Coninck, 1942 is only superficially similar to Pseudonchus Coss, 1920, and actually has differences so striking as to be incompatible with the genus. Cheilopseudonchus, n. g. is established to accomodate De Coninck's species. An ovoviviparous species new to science, P. kosswigi, is described herein from the Pacific Northwest of the United States and named in honor of Prof. Dr. Kosswig, Director, Zoologisches Staatsinstitut.

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