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New species of Wallabinema Beveridge, 1983 (Nematoda: Strongyloidea) and a redescription of W. gallardi (Johnston & Mawson, 1939) from Australian macropodid marsupials

Abstract

Two new species of Wallabinema Beveridge, 1983 are described from the sacculated fore-stomachs of macropodid marsupials in Australia. Wallabinema petrogale n. sp. from the rock wallabies Petrogale penicillata (J. Gray) and P. inornata Gould, from Queensland, differs from all congeners in having its four sub-median lips subdivided at the base. Wallabinema macropodis n. sp. from the black stripe wallaby Macropus dorsalis (J. Gray) and the red-necked pademelon Thylogale thetis (Lesson), also from Queensland, is most similar to congeners with the nerve-ring encircling the oesophageal isthmus (W. parvispiculare Beveridge, 1983, W. tasmaniense Beveridge, 1983 and W. thylogale Beveridge, 1983), but differs in the length of the spicules. Wallabinema gallardi (Johnston & Mawson, 1939) is redescribed from T. thetis in Queensland and New South Wales, with T. thetis considered to be the type-host.

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References

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Acknowledgements

This study was supported financially by the Australian Biological Resources Study (217-06). Sincere thanks are due to Dr Allison van de Meene of the Biosciences Microscopy Unit, University of Melbourne, for the provision of access to and assistance with the scanning electron microscopy.

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Correspondence to Ian Beveridge.

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Beveridge, I. New species of Wallabinema Beveridge, 1983 (Nematoda: Strongyloidea) and a redescription of W. gallardi (Johnston & Mawson, 1939) from Australian macropodid marsupials. Syst Parasitol (2020) doi:10.1007/s11230-019-09897-1

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