Redescriptions of species of Emphasis Type="Itali

Authors: I Beveridge

Publish Date: 2007/11/24

Volume: 69, Issue: 2, Pages: 75-88

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Abstract

Tetrarhynchobothrium tenuicolle Diesing 1850 is redescribed from the typespecimens collected from Raja clavata Linnaeus in the Adriatic Sea T striatum Wagener 1854 is redescribed from voucher specimens from the type host Myliobatis aquila Linnaeus from the typelocality off Naples Italy The two species are very similar in tentacular armature but are provisionally maintained as independent species since the armature of T tenuicolle cannot be fully described and because all available specimens of T striatum are immature limiting comparisons of potential differences in segment anatomy T setiense Dollfus 1969 is treated as a synonym of T striatum Zygorhynchus borneensis n sp is described from Himantura uarnacoides Bleeker and H pastinacoides Bleeker off Sabah Malaysia The new species is distinguished from its congeners by the very small hooks present in the basal region and by the presence of a uterine pore The metabasal tentacular armature of Didymorhynchus southwelli Beveridge Campbell 1988 described for the first time is homeoacanthous and homeomorphous in form However it has a basal swelling with hook rows originating on the bothrial surface and terminating on the antibothrial surface of the tentacleHelmut Sattmann Jean Mariaux and Alain de Chambrier are sincerely thanked for their hospitality and access to collections in NHMV and MHHG respectively Jimmy Cassone MNHN is also thanked for access to collections in Paris Janine Caira provided the new material from Borneo and is sincerely thanked for her contribution Collections from Malaysia were undertaken under collecting permit UPE 40/2001/10SJ924 from the Economic Planning Unit Kuala Lumpur and was supported financially by US National Science Foundation grant no DEB 0103640 to J Caira

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