Thomas's yellow bat

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Thomas's yellow bat
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Chiroptera
Family: Vespertilionidae
Genus: Rhogeessa
Species: R. io
Binomial name
Rhogeessa io
Thomas, 1903

R. bombyx (Thomas, 1913)
R. riparia (Goodwin, 1958)
R. velilla (Thomas, 1903)

Thomas's yellow bat (Rhogeessa io) is a species of bat from the family Vespertilionidae.


Thomas's yellow bat was given its binomial nomenclature by Oldfield Thomas in 1903 as Rhogeessa io.[1] Synonyms for the species include Rhogeessa bombyx (Thomas, 1913), Rhogeessa riparia (Goodwin, 1958), and Rhogeessa velilla (Thomas, 1903).[2] The Thomas's yellow bat was formerly included as a subspecies of the Black-winged little yellow bat, but was considered distinct in 1996.[2]

The species needs taxonomic review for a number of reasons.[1] One of these reasons includes the possibility that subspecies of the Thomas's yellow bat may be their own species.[1]

Range and conservation[edit]

Thomas's yellow bat is native to Bolivia, Brazil, Colombia, Costa Rica, Ecuador, French Guiana, Guyana, Nicaragua, Panama, Suriname, Trinidad and Tobago, and Venezuela.[1] It is listed as "Least Concern" by the IUCN Red List due to its wide distribution, presumed large population, occurrence in a number of protected areas, having some degree of tolerance to habitat modification, and unlikeliness of population decline at the rate to qualify for a more threatened listing.[1]

Behavior and ecology[edit]

Thomas's yellow bat inhabits many habitats, such as both evergreen and deciduous forest, thorn shrub, open areas, and villages, though it appears to favor slightly disturbed deciduous forests.[1] Like other species in its genus, the Thomas's yellow bat can take refuge in buildings and hollow trees, although its roosts are unknown.[1]

The species is crepuscular, with peaks of activity within an hour of both dusk and of dawn, flying low to the ground along wide trails or roads.[1] The Thomas's yellow bat is an insectivore, feeding on small, flying insects and with established hunting routes among individuals.[1]

The maximum energy of echolocation calls in the Thomas's yellow bat is 50 to 60 kHz.[1]

See also[edit]


  1. ^ a b c d e f g h i j k Soriano, P. & Tavares, V. (2008). "Rhogeessa io". IUCN Red List of Threatened Species. Version 2012.2. International Union for Conservation of Nature. Retrieved 22 March 2013. 
  2. ^ a b c Simmons, N.B. (2005). "Order Chiroptera". In Wilson, D.E.; Reeder, D.M. Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. p. 463. ISBN 978-0-8018-8221-0. OCLC 62265494.