The chocolate pipistrelle (''Hypsugo affinis'') is a species of

vesper bat Vespertilionidae is a family of microbats, of the order Chiroptera, flying, insect-eating mammals variously described as the common, vesper, or simple nosed bats. The vespertilionid family is the most diverse and widely distributed of bat famili ...

in the family Vespertilionidae. It is found in

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

Myanmar Myanmar, officially the Republic of the Union of Myanmar; and also referred to as Burma (the official English name until 1989), is a country in northwest Southeast Asia. It is the largest country by area in Mainland Southeast Asia and has ...

Nepal Nepal, officially the Federal Democratic Republic of Nepal, is a landlocked country in South Asia. It is mainly situated in the Himalayas, but also includes parts of the Indo-Gangetic Plain. It borders the Tibet Autonomous Region of China Ch ...

, and

Sri Lanka Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka, also known historically as Ceylon, is an island country in South Asia. It lies in the Indian Ocean, southwest of the Bay of Bengal, separated from the Indian subcontinent, ...

. Formerly classified in the genus ''

Falsistrellus ''Falsistrellus'' is a genus of vespertilionid family of bats, small predatory flying mammals. They are known from Australia. The poorly researched species have been variously placed by authors, and revised again by studies of their distinct char ...

'', phylogenetic evidence supports it belonging to the genus ''

Hypsugo The genus ''Hypsugo'' contains many bats referred to as pipistrelles or pipistrelle bats (not to be confused with the genus ''Pipistrellus''). They belong to the family Vespertilionidae or vesper bats. They are primarily found throughout Asia, th ...

''.

Description

Their total head and body length is and their

wingspan The wingspan (or just span) of a bird or an airplane is the distance from one wingtip to the opposite wingtip. For example, the Boeing 777–200 has a wingspan of , and a wandering albatross (''Diomedea exulans'') caught in 1965 had a wingsp ...

is . Their hair is soft, dense, and relatively long. The dorsum is dark brown, but the extreme tips of the hairs are pale gray, giving a slightly grizzled appearance. The underside is lighter in color. The membrane, ears, and naked parts of the face are uniform blackish brown.

References

Hypsugo Taxa named by George Edward Dobson Mammals described in 1871 Bats of Asia Bats of South Asia Bats of Southeast Asia Bats of India Mammals of Myanmar Mammals of China Mammals of Nepal Mammals of Sri Lanka Taxonomy articles created by Polbot {{Vespertilionidae-stub