Thumbless bat

Not to be confused with Smoky bat (Amorphochilus schnablii), also known as the thumbless bat.

The thumbless bat (Furipterus horrens) is a species of insectivorous bat in the family Furipteridae, in the monotypic genus Furipterus. They have a small thumb which is included in the membrane of the wing, causing the 'thumbless' appearance.^[3]

Thumbless Bat
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Chiroptera
Family:	Furipteridae
Genus:	Furipterus Bonaparte, 1837
Species:	F. horrens
Binomial name
Furipterus horrens (F. Cuvier, 1828)[2]

Taxonomy

The thumbless bat belongs to the family Furipteridae (Mammalia: Chiroptera) which is currently composed of only two genera: Amorphochilus and Furipterus.^[4] Both genera are monotypic.^{[citation needed]} The first description of the species was proposed by Frédéric Cuvier in 1828, separating the taxon to a new genus Furia.^[2][4] The taxon was reassigned to Furipterus in 1839 by Charles Bonaparte.^[4]

Geographic range

The thumbless bat is found in Central and South America. Its range includes Costa Rica, Panama, southern Brazil and Bolivia.^[5][6][7][8] as well as Venezuela, Colombia, Ecuador, Suriname, French Guiana, Guyana, Panama, Trinidad, and Peru. In Brazil, it was recorded in twelve different regions covering the Amazon, Caatinga, Cerrado and Atlantic Forest biomes.^[9][10]

Population and behavior

Its populations are rare and very local, but widespread.^[8][11] Male and female bats may live separately during some parts of the year. There were found more than 60 males occupying one hollow.^[12] Thumbless bats are aerial and insectivorous.

The thumbless bat is found in caves. Additionally, it is associated with moist environments. Thumbless bats were detected significantly more frequently over large lakes(Emmons and Feer 1997).^[8] The moist habitat plays a key role for aerial insectivorous bats. However, thumbless bat's activity is significantly higher in forest compared to the lakes. They roots in small clusters in colonies for up to 60 individuals in caves. The nests are located in deep cracks between rocks.

References

1. Miller, B.; Reid, F.; Arroyo-Cabrales, J.; Cuarón, A.D.; de Grammont, P.C. (2016). "Furipterus horrens". IUCN Red List of Threatened Species. 2016: e.T8771A21971535. doi:10.2305/IUCN.UK.2016-2.RLTS.T8771A21971535.en. Retrieved 19 November 2021.
2. Cuvier, F. (1828). "description d'un nouveau genre de chauve-souris sous le nom de Furie". Mémoires du Muséum d'histoire naturelle. 16. G. Dufour: 150.
3. Nowak, Ronald (1991). Walker's Mammals of the World (Fifth ed.). The Johns Hopkins University Press. ISBN 978-0-8018-3970-2.
4. Simmons, N.B. (2005). "Order Chiroptera". In Wilson, D.E.; Reeder, D.M (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. pp. 312–529. ISBN 978-0-8018-8221-0. OCLC 62265494.
5. Rafaela Duda; Jeronymo Dalapicolla; Leonora Pires Costa (1 Dec 2012). "First record of the smoky bat Furipterus horrens (F. Cuvier, 1828) (Mammalia: Chiroptera) in the state of Espírito Santo, southeastern Brazil". Check List. 8 (6): 1362–1364. doi:10.15560/8.6.1362.
6. Gardner, A.L. (2008). "Family Furipteridae Gray, 1866". In A.L. Gardner (ed.). Mammals of South America. Vol. 1: Marsupials, Xenarthrans, Shrews, and Bats. Chicago: The University of Chicago Press. pp. 389–392.
7. Peracchi, A.L.; M.R. Nogueira; I.P. Lima (2011). "Novos achegos à lista dos quirópteros do município de Linhares, estado do Espírito Santo, sudeste do Brasil (Mammalia, Chiroptera)". Neotropical. 17 (1): 842–852.
8. Emmons, L.H (1990). Neotropical rainforest mammals: a field guide. Chicago: University of Chicago Press. p. 281.
9. Reis and Gazarini 2007, Tavares et al. 2008, Peracchi et al. 2011^{[full citation needed]}
10. Peracchi, A.L. (2010). Mamíferos do Brasil: guia de identificação. Rio de Janeiro: Technical Books Editora. p. 560.
11. Reid, F. (2009). A Field Guide to the Mammals of Central America and Southeast Mexico. Oxford University Press.
12. LaVal, R.K. (1977). "Notes on some Costa Rican bats". Brenesia (Museo Nacional de Costa Rica). 10 (11): 77–83.