Tylonycteris robustula

The body is small, the forearm length is about 25mm, and the weight is only 4-5g. The base of the thumb and the sole of the foot have fleshy pads. The ears are short, blunt at the end, and the tragus is narrow and blunt. The skull is flat, and the cranial height is about 1/2 of the cranial width. The body hair is dark brown, the back hair is dark brown, and the abdominal hair is light.

It is distributed in Yunnan, Guangxi, Hainan, Guizhou, Sichuan, Jiangxi, Guangdong and Hong Kong provinces in China. Foreign distribution areas include Cambodia, Thailand, India, Vietnam and Indonesia and other South and Southeast Asian regions.

      The brown bat species is rare. It is a tropical bat that lives in bamboo holes that are eaten by beetles. Since Zhang Libiao et al reported the discovery of this kind of new records in Hainan and other three provinces in 2008, Zhang Qiuping et al. (2014) and Wu Yi et al. (2015) reported the new records of this kind in Jiangxi and Guangdong respectively, which expanded the distribution area of this kind in China from the original 2 provinces of Yunnan and Guangxi to the current 8 provinces and regions. With the further development of investigation, the distribution area of this species may be further expanded. Tu et al. (2017) used molecular methods to classify the genus <Tylonycteris from the perspective of phylogeography, and revised the former Chinese species <T. robustula> to <T. torkinensis.

      It has been included in the Chinese Red List of Biodiversity - Vertebrate volume, and the assessment level is near threatened NT.