Thomas's Yellow Bat

Thomas's Yellow Bat

Rhogeessa io

Silhouette: Margot Michaud · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability Insufficient data
at Braulio Carrillo National Park
1 Verified sightings at Braulio Carrillo National Park From 2019 to 2026
4 Verified sightings across all 4 parks From 2019 to 2026
🌙 Nocturnal When it's spotted during nighttime hours (6pm–6am)

About the Thomas's Yellow Bat

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. Synonyms for the species include Rhogeessa bombyx (Thomas, 1913), Rhogeessa riparia (Goodwin, 1958), and Rhogeessa velilla (Thomas, 1903). The Thomas's yellow bat was formerly included as a subspecies of the black-winged little yellow bat, but was considered distinct in 1996.

The species needs taxonomic review for a number of reasons. One of these reasons includes the possibility that subspecies of the Thomas's yellow bat may be their own species. Thomas's yellow bat is native to Bolivia, Brazil, Colombia, Costa Rica, Ecuador, French Guiana, Guyana, Nicaragua, Panama, Suriname, Trinidad and Tobago, and Venezuela. 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.

Thomas's yellow bat... Wikipedia →

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Piedras Blancas National Park 🇨🇷 Costa Rica
Insufficient data
2 Darién National Park 🇵🇦 Panama
Insufficient data
3 Braulio Carrillo National Park 🇨🇷 Costa Rica
Insufficient data
4 Soberanía National Park 🇵🇦 Panama
Insufficient data
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