Aratathomas's Yellow-shouldered Bat vs Choco Yellow-shouldered Bat

Sturnira aratathomasi compared with Sturnira koopmanhilli

Key Differences

• Aratathomas's Yellow-shouldered Bat is Near Threatened while Choco Yellow-shouldered Bat is Data Deficient.

Taxonomic Classification

Rank	Aratathomas's Yellow-shouldered Bat	Choco Yellow-shouldered Bat
Kingdom same	Animalia (hayvan)	Animalia (hayvan)
Phylum same	Chordata (Kordalılar)	Chordata (Kordalılar)
Class same	Mammalia (memeliler)	Mammalia (memeliler)
Order same	Chiroptera (yarasa)	Chiroptera (yarasa)
Family same	Phyllostomidae	Phyllostomidae
Genus same	Sturnira	Sturnira
Species	Sturnira aratathomasi	Sturnira koopmanhilli

Evolutionary Relationship

Aratathomas's Yellow-shouldered Bat and Choco Yellow-shouldered Bat share a common ancestor at the Genus level: Sturnira.

Conservation Status

Aratathomas's Yellow-shouldered Bat

NT — Near Threatened

Choco Yellow-shouldered Bat

DD — Data Deficient

Physical Characteristics

Attribute	Aratathomas's Yellow-shouldered Bat	Choco Yellow-shouldered Bat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Aratathomas's Yellow-shouldered Bat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Choco Yellow-shouldered Bat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Ecuador.

Aratathomas's Yellow-shouldered Bat

The Aratathomas's Yellow-shouldered Bat (Sturnira aratathomasi) is a species in the genus Sturnira. It is currently classified as Near Threatened on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Choco Yellow-shouldered Bat

The Choco Yellow-shouldered Bat (Sturnira koopmanhilli) is a medium-sized frugivorous bat in the family Phyllostomidae, endemic to the Chocó biogeographic region of northwestern South America, where it occurs in the humid forests of the Pacific slope of Colombia and adjacent Ecuador. It belongs to the genus Sturnira — the yellow-shouldered bats — characterised by males bearing distinctive yellowish, orange, or reddish shoulder glands (from which the group's name derives), robust bodies, and rounded ears. Like all Sturnira, this species is primarily frugivorous, consuming a wide range of small, soft fruits from pioneer and forest trees, and plays an important role as a seed disperser in disturbed forest patches and forest edges. The diet of Solanaceae (nightshade family) fruits is particularly typical of the genus, and Sturnira bats are considered the primary dispersers of many pioneer Solanum species in Neotropical secondary succession, contributing directly to forest regeneration. The IUCN classifies the Choco Yellow-shouldered Bat as Data Deficient, reflecting significant uncertainty about the species' distribution limits, population size, and ecological requirements. The Chocó region continues to experience rapid deforestation, which threatens frugivorous bat diversity even where individual species lack adequate data for formal threat assessment.

Shared Countries

Both species can be found in 2 countries:

🇨🇴 Colombia 🇪🇨 Ecuador