Abstract
ABSTRACTFour new species of strongyloid nematodes belonging to the genus Cloacina von Linstow, 1898 parasitic in macropodid marsupials are described and a poorly known species is redescribed from new material. Cloacina elegans Johnston & Mawson, 1938 is redescribed from the black-flanked rock wallaby, Petrogale lateralis Gould, from central Australia. Cloacina hylas sp. nov. from the stomach of the black-stripe wallaby, Notamacropus dorsalis (Gray), differs from congeners in lacking ornamented lobes surrounding the stoma, in the shape of the cephalic papillae, the presence of oesophageal bosses but the lack of oesophageal denticles. Cloacina idas sp. nov. from the stomach of Godman’s rock wallaby, Petrogale godmani Thomas, differs from congeners in possessing a very slender oesophagus, eight leaf crown elements and the deirid in the anterior oesophageal region. Cloacina schultzi sp. nov. from the stomach of the yellow-footed rock wallaby, Petrogale xanthopus Gray, differs in possessing a sub-cylindrical oesophagus, a shallow buccal capsule and lip-like inflations of the leaf crown elements while Cloacina zetes sp. nov. from the stomach of the Western Australian tammar wallaby, Notamacropus eugenii (Desmarest), differs from all congeners in the shape of the leaf crown elements.
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