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Four new species of Rugopharynx Mönnig, 1927 (Nematoda: Strongyloidea) parasitic in the stomachs of macropodid marsupials from Australia

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Abstract

Four new species of Rugopharynx Mönnig, 1927 are described from macropodid marsupials in Australia, some identified initially using molecular methods. Rugopharynx thetidis n. sp. from Thylogale thetis (Lesson) was initially included within R. sigma Chilton, Beveridge & Andrews, 1993 but was identified as being distinctive using molecular methods and is differentiated morphologically from R. sigma by the more anterior position of the deirid and by the distinctive curvature of the spicule tips. Rugopharynx thylogale n. sp., also from Thylogale thetis, is distinguished by the extreme elongation of the dorsal lobe of the bursa and spicule length (1.07–1.23 mm). Rugopharynx solitarius n. sp., again from Thylogale thetis, was initially included within Rugopharynx zeta (Johnston & Mawson, 1939) but differs morphologically in the features of the bursa. Rugopharynx disiunctus n. sp. from Macropus fuliginosus (Desmarest) was initially included within Rugopharynx rho Beveridge & Chilton, 1999 but was identified as distinctive based on DNA sequence differences. The new species differs from R. rho in the pattern of striations on the buccal capsule and in the lengths of the spicules. Additional records of species of Rugopharyx in M. fuliginosus in Western Australia are provided.

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Acknowledgements

This study was supported financially by the Australian Biological Resources Study (217-06).

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Authors and Affiliations

  1. Faculty of Veterinary and Agricultural Sciences, Veterinary Clinical Centre, University of Melbourne, Werribee, VIC, Australia

    Ian Beveridge

  2. South Australian Museum, Adelaide, SA, Australia

    Ian Beveridge

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  1. Ian Beveridge
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Correspondence to Ian Beveridge.

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Beveridge, I. Four new species of Rugopharynx Mönnig, 1927 (Nematoda: Strongyloidea) parasitic in the stomachs of macropodid marsupials from Australia. Syst Parasitol 97, 41–55 (2020). https://doi.org/10.1007/s11230-019-09893-5

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