The 2019 species account describes soft, velvety fur that is blackish brown to gray-brown above and slightly paler, dark gray-brown below. At Ohse-do Cave in Kyushu, Japan, emergence was synchronized with sunset and the appearance of prey. The range here covers the account’s Japanese records, excluding Hokkaido.
The HMW 2019 species description says its fur is soft and velvety, blackish brown to gray-brown above and slightly paler, dark gray-brown below. Its ears are short, the tragus curves slightly forward, and its wing membranes are almost black. The species is also recorded in Japan.
At Ohse-do Cave in Kyushu, Japan, the bats began vocalizing before emerging. Their emergence was synchronized with sunset and correlated with the appearance of prey.
An extinction-risk assessment has not been added yet.