Rhinolophus siamensis, Gyldenstolpe, 1917

Burgin, Connor, 2019, Rhinolophidae, Handbook of the Mammals of the World – Volume 9 Bats, Barcelona: Lynx Edicions, pp. 280-332 : 301-302

publication ID

https://doi.org/ 10.5281/zenodo.3748525

DOI

https://doi.org/10.5281/zenodo.3808926

persistent identifier

https://treatment.plazi.org/id/885887A2-FFD9-8A3E-F89C-EFB2FE0DD1D4

treatment provided by

Plazi

scientific name

Rhinolophus siamensis
status

 

45 View On . Thai Horseshoe Bat

Rhinolophus siamensis View in CoL

French: Rhinolophe siamois / German: Thai-Hufeisennase / Spanish: Herradura siamesa

Other common names: Siamese Horseshoe Bat

Taxonomy. Rhinolophus macrotis siamensis Gyldenstolpe, 1917 View in CoL ,

Doi Par Sakeng, Northwestern Siam [= Thailand ].

Rhinolophus siamensis is in the macrotis species group and is genetically sister to R episcopus , which was recently validated as a distinct species from R macrotis . Rhinolophus siamensis generally has been included as a subspecies of R macrotis , but is now regarded as a separate species based on broad sympatry and lack of hybridization. Recently described. huananus is now considered a synonym of AE siamensis based on genetic data and apparent lack of reliable differentiating morphological traits. Monotypic.

Distribution. S China (Yunnan, Guangxi, Hunan, and Guangdong), N Thailand, N & C Laos, and N & C Vietnam. View Figure

Descriptive notes. Head-body 33- 5— 40 mm, tail 13-22 mm, ear 19-22- 6 mm, hindfoot 8-9 mm, forearm 36-41 mm; weight 4-5—6- 4 g. The Thai Horseshoe Bat is similar to the Big-eared Horseshoe Bat (AE macrotis ) but distinguished by its much higher frequency calls and smaller size. Dorsal pelage is pale brown; venter is paler buff. There is no known orange morph. Males lack axillary tufts. Ears are proportionally long. Noseleaf has subtriangular lancet, with narrow, rounded tip and convex sides; connecting process is rounded with straight anterior edge when viewed laterally; sella is hairy, broad, rounded at tip, long, and upward facing; and horseshoe is broad at 6-7-8- 3 mm, completely covers muzzle, has moderately developed lateral leaflets concealed by horseshoe, and has small but distinct median emargination. Lower lip has three medial grooves. Skull is similar to the Big-eared Horseshoe Bat. P2 is in tooth row and relatively large, separating C1 and P4, and P3 is small and labially displaced from tooth row.

Habitat. Apparently tropical and subtropical moist forests in lowland or middle elevation habitats.

Food and Feeding. No information.

Breeding. No information.

Activity patterns. Thai Horseshoe Bats are nocturnal. They are known to roost in caves. Call shape is FM/CF/FM, with F component recordeed at 66-71 -8 kHz in China and 68—74 kHz in Laos.

Movements, Home range and Social organization. No information.

Status and Conservation. Classified as Least Concern on The IUCN Red List. There are currently no known threats to the Thai Horseshoe Bat, although little is known about its ecology and natural history. Additional research is needed.

Bibliography. Chiozza (2008a), Csorba eta/. (2003), Francis (2008a), Liu Tong eta/. (2019), Smith & XieYan (2008), Tu Vuong Tan, Hassanin et al. (2017), WuYi et al. (2008), Zhang Libiao, Jones et al. (2009), Zhang Lin eta/. (2018).

Kingdom

Animalia

Phylum

Chordata

Class

Mammalia

Order

Chiroptera

Family

Rhinolophidae

Genus

Rhinolophus

Loc

Rhinolophus siamensis

Burgin, Connor 2019
2019
Loc

Rhinolophus macrotis siamensis

Gyldenstolpe 1917
1917
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