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Heterocotyle whittingtoni n. sp. (Monogenea: Monocotylidae) from the gills of the black-spotted whipray, Maculabatis toshi (Whitley) (Myliobatiformes: Dasyatidae), collected in coastal waters of Queensland, Australia

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Abstract

Heterocotyle whittingtoni n. sp. (Monogenea: Monocotylidae) is described from the gills of the black-spotted whipray Maculabatis toshi (Whitley) (Dasyatidae) collected from Moreton Bay near Dunwich and Peel Island, and from the eastern Gulf of Carpentaria off Weipa, Queensland, Australia. Heterocotyle whittingtoni n. sp. has a single sinuous ridge surmounting the haptoral septa and the male copulatory organ lacks an accessory piece. The new species can be distinguished from the two other Heterocotyle species that have this combination of characters by the distal portion of the male copulatory organ which is slightly flared with uniquely thickened walls and by the morphology of the testis. The identity of the host of H. whittingtoni n. sp. is discussed. We confirm that the host of the monocotylids Dendromonocotyle lasti Chisholm & Whittington, 2005 and Monocotyle caseyae Chisholm & Whittington, 2005 originally identified as “Himantura sp.” was M. toshi.

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Acknowledgements

We are grateful to Peter Fearnside (Dunwich, Queensland) for collecting the rays in Moreton Bay. The Moreton Bay study was funded by an Australian Research Council large grant (no. A00104437) awarded for 2001–2003. We thank Janine Caira (University of Connecticut) and Kirsten Jensen (University of Kansas) for providing us with the gill tissue from rays collected near Weipa, Queensland; their collections were funded in part by PEET grant DEB no. 0118882. The collection of M. toshi and its parasites during 2016 were made during the survey of the parasites of the fishes of Moreton Bay and supported by an Australian Biological Resources Study Grant (RF215-40) awarded to Tom Cribb and Scott Cutmore (The University of Queensland). We thank Vanessa Glennon (The University of Adelaide) who kindly mounted the helminth specimens and Peter Last for his advice and expert assistance in identifying the hosts.

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Authors and Affiliations

  1. Parasitology Section, South Australian Museum, North Terrace, Adelaide, South Australia, 5000, Australia

    Leslie A. Chisholm & Delane C. Kritsky

  2. Ecology and Evolutionary Biology, School of Biological Sciences, University of Adelaide, North Terrace, Adelaide, SA, 5001, Australia

    Leslie A. Chisholm

  3. Department of Community & Public Health, College of Health Professions, Idaho State University, Campus Box 8090, Pocatello, ID, 83209, USA

    Delane C. Kritsky

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  1. Leslie A. Chisholm
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Correspondence to Leslie A. Chisholm.

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Chisholm, L.A., Kritsky, D.C. Heterocotyle whittingtoni n. sp. (Monogenea: Monocotylidae) from the gills of the black-spotted whipray, Maculabatis toshi (Whitley) (Myliobatiformes: Dasyatidae), collected in coastal waters of Queensland, Australia. Syst Parasitol 97, 561–567 (2020). https://doi.org/10.1007/s11230-020-09939-z

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