Thylogale billardierii (Diprotodontia: Macropodidae) Author Rose, Randolph W. School of Biological Sciences, University of Tasmania, Private Bag 55, Sandy Bay, Tasmania 7001, Australia randy.rose@utas.edu Author Rose, Robert K. Department of Biological Sciences, Old Dominion University, Norfolk, VA 23529 - 0266, USA brose@odu.edu text Mammalian Species 2018 2018-09-25 50 965 100 108 http://dx.doi.org/10.1093/mspecies/sey012 journal article 7818 10.1093/mspecies/sey012 1133c1b3-ef89-4bfb-bc6b-de99d52287c3 1545-1410 4573565 022B7817-9037-4B26-96FF-2D2488D63FB7 Thylogale Gray, 1837 Thylogale : Gray, 1837:583 . Part; subgenus of Halmaturus . Type species Halmaturus [ ( Thylogale ) ] eugenii Gray, 1837 (= Halmaturus thetis Lesson, 1827 ) by monotypy. CONTEXT AND CONTENT. Order Diprotodontia , superfamily Macropodoidea ,family Macropodidae , subfamily Macropodinae . The genus Thylogale includes the following 6 living species ( Calaby and Richardson 1988 ; Groves 1993 ): Thylogale browni , T. brunii , T. calabyi , T. stigmatica , and T. thetis . A key to species of Thylogale (derived from LeSouef et al. 1926 ; Flannery 1992 , 1995 ; Menkhorst and Knight 2001 ) follows: 1. Belly fur white to the roots. Distribution: Aru, Kei, other islands, and southern Papua New Guinea …………… … … … … … … … … … … … … … … …. … T. b r u n i i Belly fur gray, orange, cream, other………………………2 2. Neck, shoulders, and forehead rich rufousred, belly fur cream, no cheek- or hip-stripes. Distribution: coastal rain- and wet sclerophyll forests from central Queensland to central New South Wales ………………………......…………..…… T. thetis Neck and shoulders gray or brown…………………..……3 3. White cheek-stripe and buff hip-stripe, reddish legs. Distribution: tip of Cape York, Queensland to Tamworth, New South Wales; Papua New Guinea south of Fly River ………………………...……………...…… T. stigmatica Lacks both cheek- and hip-stripes………………...………4 4. Belly fur orange to rufous-red, no facial or hip markings. Distribution: now restricted to Tasmania ……………… …………………………………...…..…… T. billardierii Fig. 1. —Adult Thylogale billardierii . Photograph by Murray Lord used with permission. Belly fur gray…………………………………..…………5 5. Gray belly fur tipped with yellow, densely furred tail, small body size, well-marked hip-stripe, axils of limbs with small patches of bare skin. Distribution: alpine zone of eastern Papua New Guinea ………………………...……………… T. calabyi Gray belly fur without yellow fringe, no hip-stripe, large patches of bare skin in axils of limbs. Distribution: northern Papua New Guinea and Northeastern IrianJaya………………….……………… T. browni