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Three new species of Anthocephalum Linton, 1890 (Cestoda: Tetraphyllidea) from dasyatid stingrays of the Gulf of California

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Abstract

Three new species of Anthocephalum Linton, 1890 are described from dasyatid stingrays collected in the Gulf of California. Anthocephalum michaeli n. sp. is described from Dasyatis longus (Garman). This species most closely resembles A. alicae Ruhnke, 1994, but differs from this species in proglottid number. A. lukei n. sp. is also described from D. longus. This new species is most similar to A. cairae Ruhnke, 1994, but differs from that species in marginal loculi number and number of proglottids. The third new species, A. currani n. sp., is described from D. brevis (Garman). This species is most similar to A. centrurum (Southwell, 1925) Ruhnke, 1994, but differs from that species in marginal loculi number, number of testes and ovarian length. Phyllobothrium kingae Schmidt, 1978 is also consistent in morphology with species of Anthocephalum and is transferred to this genus, forming the new combination Anthocephalum kingae n. comb. This species most closely resembles A. michaeli n. sp., but differs in testicular shape. This brings the total number of species of Anthocephalum to nine. The transfer of the species Phyllobothrium arctowskii Wojciechowska, 1991, P. georgiense Wojciechowska, 1991, P. rakusai Wojciechowska, 1991 and P. siedleckii Wojciechowska, 1991 to Anthocephalum is not warranted, as these four species lack a posteriorly recurved cirrus-sac and a sinuous vagina, and have vitelline follicles uninterrupted by the ovary. Of the nine known species, all are parasitic in batoid fishes, and six are found in species of Dasyatis Garman. The phylogenetic status of Anthocephalum species in relationship to Rhinebothroides Mayes, Brooks & Thorson, 1981, Pararhineothroides Zamparo, Brooks & Barriga, 1999 and other rhinebothriin taxa is discussed.

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Acknowledgements

We thank Janine N. Caira and her Gulf of California field teams for collecting specimens of A. michaeli, A. lukei, and A. currani, and Dr Caira for providing SEM micrographs of these new species. We also thank Don Duszynski for providing voucher specimens of A. kingae. This work was supported in part by NSF-BS&I grant DEB No. 9300796 and NSF-PEET No. 0118882.

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  1. Department of Biology, West Virginia State University, Institute, WV, 25112-1000, USA

    T. R. Ruhnke & H. B. Seaman

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  1. T. R. Ruhnke
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  2. H. B. Seaman
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Correspondence to T. R. Ruhnke.

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Ruhnke, T.R., Seaman, H.B. Three new species of Anthocephalum Linton, 1890 (Cestoda: Tetraphyllidea) from dasyatid stingrays of the Gulf of California. Syst Parasitol 72, 81–95 (2009). https://doi.org/10.1007/s11230-008-9170-6

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  • DOI: https://doi.org/10.1007/s11230-008-9170-6

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