The Surat helmeted bat (''Cassistrellus dimissus'') 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 ...

. It ranges from

Thailand Thailand, officially the Kingdom of Thailand and historically known as Siam (the official name until 1939), is a country in Southeast Asia on the Mainland Southeast Asia, Indochinese Peninsula. With a population of almost 66 million, it spa ...

and

Laos Laos, officially the Lao People's Democratic Republic (LPDR), is the only landlocked country in Southeast Asia. It is bordered by Myanmar and China to the northwest, Vietnam to the east, Cambodia to the southeast, and Thailand to the west and ...

west to

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 ...

Taxonomy

This species was formerly classified in the genus ''

Eptesicus ''Eptesicus'' is a genus of bats, commonly called house bats or serotine bats, in the family Vespertilionidae. The genus name is likely derived from the Greek words ''ptetikos'' 'able to fly' or ''petomai'' 'house flier', although this is not cer ...

'' until phylogenetic analysis found it to belong a distinct genus in the tribe

Vespertilionini Vespertilionini is a Tribe (biology), tribe of Bat, bats in the family Vespertilionidae. The largest of the tribes in Vespertilioninae, it contains many genera found throughout the Old World and Australasia. Species Species in the tribe includ ...

, and thus reclassified it in the newly described genus '' Cassistrellus''.

Distribution

''Cassistrellus dimissus'' has been found in Khao Nong,

Tai Rom Yen National Park Tai Romyen National Park () is in the east of Surat Thani Province in southern Thailand. The park consists of the northern end of the Nakhon Si Thammarat mountain range and is mostly covered with forests. It was established on 31 December 1991 an ...

Surat Thani Province Surat Thani (, ), often shortened to Surat, is the largest of the southern provinces (''changwat'') of Thailand. It lies on the western shore of the Gulf of Thailand. Surat Thani means 'city of good people', a title given to the city by King ...

southern Thailand Southern Thailand (formerly Southern Siam and Tambralinga) is the southernmost cultural region of Thailand, separated from Central Thailand by the Kra Isthmus. Geography Southern Thailand is on the Malay Peninsula, with an area of around , bo ...

and in Royal Chitwan National Park, southern Nepal.

Sources

Cassistrellus Bats of Asia Taxa named by Oldfield Thomas Mammals described in 1916 Taxonomy articles created by Polbot Taxobox binomials not recognized by IUCN {{Vespertilionidae-stub