| Murina guilleni | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Chiroptera |
| Family: | Vespertilionidae |
| Genus: | Murina |
| Species: | M. guilleni |
| Binomial name | |
| Murina guilleni Soisook, Karapan, Satasook, Vu Dinh Thong, Anwarali Khan, Maryanto, Csorba, Furey, Aul, & P. J. J. Bates, 2013 | |
Murina guilleni is a species of vesper bat found in Thailand and the Nicobar Islands.
Murina guilleni was described as a new species in 2013. [1] Its description was the result of a taxonomic split of the round-eared tube-nosed bat (Murina cyclotis). The holotype had been collected in 2010 by P. Soisook at Rajjaprabha Dam in the Surat Thani province of Thailand. The eponym for the species name guilleni is Antonio Guillén-Servent who, in 1997, was the first to collect this species. [2]
There are two subspecies: the nominate subspecies, Murina guilleni guilleni, which is in Thailand, and M. g. nicobarensis, which is in the Nicobar Islands. [2]
Murina guilleni is considered a medium-sized member of the genus Murina. Its forearm length ranges from 31.9–35.9 mm (1.26–1.41 in), with an average length of 34.0 mm (1.34 in). The fur on its back is bicolored: the roots of individual hairs are gray, while the tips are orangeish-brown. Its belly fur is dark gray, with hairs around the throat and chest tinged with orange. [2]
Murina guilleni echolocates to find its insect prey. Its echolocation calls are frequency modulated, meaning that they vary in pitch within the call. Based on recordings of two males, the frequency of maximum energy is from 120.1 to 155.7 kHz.The starting frequency of calls ranges from 175.0 to 184.0 kHz, while the ending frequency is 53.0–63.0 kHz. [2]
Murina guilleni has been documented in forests in Southern Thailand and the Nicobar Islands. [2]
Geoffroy's rousette is a species of megabat or Old World fruit bats. It is one of ten species in the genus Rousettus.
The dwarf dog-faced bat is a species of free-tailed bat from South America. It is found in Argentina, Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, Paraguay and Uruguay, typically at lower elevations. It is one of two species in the genus Molossops, the other being the rufous dog-faced bat. Three subspecies are often recognized, though mammalogist Judith Eger considers it monotypic with no subspecies. It is a small free-tailed bat, with a forearm length of 28.9–32.5 mm (1.14–1.28 in) and a weight of 5–8 g (0.18–0.28 oz); males are larger than females. It is brown, with paler belly fur and darker back fur. Its wings are unusual for a free-tailed bat, with exceptionally broad wingtips. Additionally, it has low wing loading, meaning that it has a large wing surface area relative to its body weight. Therefore, it flies more similarly to a vesper bat than to other species in its own family. As it forages at night for its insect prey, including moths, beetles, and others, it uses two kinds of frequency-modulated echolocation calls: one type is to navigate in open areas and to search for prey, while the other type is used for navigating in cluttered areas or while approaching a prey item.
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