The Namdapha flying squirrel is an arboreal, nocturnal flying squirrel endemic to northeastern India, where it is known from a single specimen collected in Namdapha National Park in 1981. It was the sole member in the genus Biswamoyopterus until the description of the Laotian giant flying squirrel in 2013. No population estimates are available for B. biswasi, but the known habitat is tall Mesua ferrea jungles, often on hill slopes in the catchment area of Na Dihing river in North eastern India