Lesser bamboo bat
Binomial name: Tylonycteris pachypus, Coenraad Jacob Temminck, 1840
The Lesser Bamboo Bat (Tylonycteris pachypus) is a species of vesper bat in the Vespertilionidae family. It is found in Bangladesh, China, India, Indonesia, Malaysia, Myanmar and the Philippines.
The bat, the size of a bumble bee, is among the smallest mammals on earth, measuring about 40 mm in length with a wingspan of 150 mm. It weighs 3.5 to 5.8g, or as little as 2.0g. A 4.8-gram T. pachypus has about a 0.08-g brain.
This species lives in the hollow of Giant Bamboo shoots Gigantochloa scortechinii; the entrance slit (created by the Chrysmelid beetle, Lasiochila goryi) to the bamboo tunnel is too restrictive for most predators, such as snakes. Flattened skull (to pass through entryway) and toe and wrist pads (to grip inner surface) are adaptations to their roosting site. Groups of up to 40.
Gestation 12 to 13 weeks. Usually two young; female carries young for first couple days, then leaves them behind in bamboo chamber. The young are weaned and become independent at six to seven weeks.
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- Tylonycteris pachypus
Tylonycteris pachypus aurex, Michael Rogers Oldfield Thomas, 1915
Tylonycteris pachypus bhaktii, Oei, 1960
Tylonycteris pachypus fulvidus, Edward Blyth, 1859
Tylonycteris pachypus meyeri, Wilhelm Karl Hartwich Peters, 1872
Tylonycteris pachypus pachypus, Coenraad Jacob Temminck, 1840
Least Concern (IUCN3.1)