Heterocotyle whittingtoni n. sp. (Monogenea: Monocotylidae) from the gills of the black-spotted whipray, Maculabatis tos
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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 Leslie A. Chisholm
. Delane C. Kritsky
Received: 22 March 2020 / Accepted: 1 September 2020 Ó Springer Nature B.V. 2020
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
This article was registered in the Official Register of Zoological Nomenclature (ZooBank) as urn:lsid:zoobank.org:pub:C8544CA9-2D95-40C5-8B2E7EAFBAD35D79. This article was published as an Online First article on the online publication date shown on this page. The article should be cited by using the doi number. This is the Version of Record.This article is part of the Topical Collection Monogenea L. A. Chisholm D. C. Kritsky Parasitology Section, South Australian Museum, North Terrace, Adelaide, South Australia 5000, Australia L. A. Chisholm (&) Ecology and Evolutionary Biology, School of Biological Sciences, University of Adelaide, North Terrace, Adelaide, SA 5001, Australia e-mail: [email protected] D. C. Kritsky Department of Community & Public Health, College of Health Professions, Idaho State University, Campus Box 8090, Pocatello, ID 83209, USA
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.
Introduction The Monocotylidae is a family of monogeneans that parasitise chondrichthyan fishes (sharks, rays and chimaeras). Almost 40% of the described monocotylids have been recorded from Australian waters probably due to research focus in this region and the high diversity of potential chondrichthyan hosts occurring in Australian waters (see Last & Stevens, 2009). Monocotylids infecting rays collected from Moreton Bay, Queensland, Australia, have been examined in previous studies (e.g. Young, 1967; Chisholm & Whittington, 2005; among others). In the present paper we describe a new species of Heterocotyle Scott, 1904 from the gills of the black-spotted whipray Maculabatis toshi (Whitley) collected in Queensland waters. The identity of the host species is also discussed.
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