Myotis horsfieldii


Horsfield's Myotis

Haoshi Shu'erfu

Morphological description Life history Distribution Habitat Roost sites and roosting patterns Emergence and flight pattern Foraging behaviour Echolocation calls Status and protection


Myotis horsfieldii

Myotois horsfieldii


Morphological Description

· Analysis of cytochrome b sequences by Manuel Ruedi and Benoit Stadelmann placed the bat alongside another identified as horsfieldii in SE Asia.

· Fur brown, lighter ventrally.

· One bat captured in Yunfu Mount, Bolo County, Guangdong 4 September 2003. Male, forearm 35.0 mm, 6.3 g. ear 9.9 mm, penis club shaped. Tibia 17mm, foot 9 mm. Lower canine much larger than in siligorensis . Note tiny 2nd upper premolar.

· Smith & Xie (2008) give forearm length = 36-42 mm, and state wings attached to outer metatarsal.

· The ears are long, the tips of are rounded. Anterior borders are convex, posterior borders are concave above and convex below with a notch in midpart (visible on photos above).

Life history

· Little known


The species extends across SE Asia, including Vietnam. In China it is known from Guangdong, Hainan, and Hong Kong (Smith & Xie 2008). The Chinese distribution is shown by dots on the map (as given by Wang, 2003). In Wang's book, it referred to as distributed in Guangdong , Hong Kong and Hainan Island . the dots are mapped in the middle of provinces in order to imply distribution at the provincial level.


· Little known. We caught the bat over a stream below a mountainous area.

Roost sites and roosting behaviour

· Roosts in caves, abandoned tunnels and man-made structures. Colonies are usually small but may contain over 100 bats (Smith & Xie 2008).

· Emergence and flight pattern

· Little known.

Foraging behaviour

· Not known.

Echolocation calls

· Unknown.

Status and protection

· There is no estimation of population size for China.

· Horsfield's myotis is listed as RL-VU A1acd in China (Smith & Xie 2008).

· Caves, streams and old buildings should be protected as their habitats.

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