Kalmar "Genus Petaurista" tana nufin rarrabuwa taxonomic da ake amfani da ita a ilmin halitta don rarraba rukuni na dabbobin da ke cikin dangin Sciuridae (squirrels). Petaurista wani nau'i ne na squirrels na bishiyar da aka samo asali a Asiya. Wadannan squirrels an san su da iya yin yawo a cikin iska ta hanyar amfani da fatun fata wanda ya tashi daga wuyan hannu zuwa idon sawu, yana ba su damar yin tafiya mai nisa tsakanin bishiyoyi. Wasu nau'in Petaurista sun hada da squirrel mai tashi da ja da fari, da squirrel mai launin toka mai launin toka, da kuma giant na Japan.