Sciuropterus hosei Thomas, 1900 Sciuridae Don E. Wilson Thomas E. Lacher, Jr Russell A. Mittermeier 4FD52 Thomas 1900 [963,1253,2359,2405] Mammalia Sciuridae Petaurillus Animalia Rodentia 58 766 Chordata species hosei    133.    Hose’s Pygmy Flying Squirrel    French: Polatouche de Hose/ German: Hose-Kleinstgleithornchen/ Spanish: Ardilla voladora pigmea de Hose   Taxonomy. Sciuropterus hosei Thomas, 1900,   “Toyut River, Baram District, E Sarawak, Malaysia.”  This species is monotypic.    Distribution.N Borneo, recorded only on few localities (Sepilok, Tasek Merimbun, and Sarawak S to Niah Caves).   Descriptive notes.Head—body 75-90 mm, tail 80-98 mm; weight mean 21 g. Dorsal hair of Hose’s Pygmy Flying Squirrel is dark gray but more buff toward midline. Light spot occurs behind eyes. Dark line on cheeks helps to distinguish it from the Lesser Pygmy Flying Squirrel (P. emiliae). Underparts are off-white, with gray underfur showing through. Tail is gray or buffat base, blending to black distally but with whitetip.   Habitat.Tropical lowland dipterocarp forests.   Food and Feeding.Thereis no information available for this species.   Breeding.There is no information availableforthis species.   Activity patterns.Hose’s Pygmy Flying Squirrels are nocturnal and arboreal.   Movements, Home range and Social organization.There is no information available for this species.   Status and Conservation.Classified as Data Deficient on The IUCN Red List. Current population trend of Hose’s Pygmy Flying Squirrel is unknown. It is threatened by logging and habitat destruction. There have been no recent surveys so its distribution may be more widespread than currently thought. More surveys and basic research onits distribution, population status, and natural history are needed to better understand threats and useful conservation action.   Bibliography.Duckworth & Francis (2008b), Jackson (2012), Jackson & Thorington (2012), Thorington & Heaney (1981), Thorington, Koprowski et al. (2012). 3862940495 58 766