Van Gelder's bat

Van Gelder's bat

Bauerus dubiaquercus

Silhouette: Margot Michaud · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability Insufficient data
at Calakmul Biosphere Reserve
6 Verified sightings at Calakmul Biosphere Reserve From 2019 to 2026
6 Verified sightings across 1 park From 2019 to 2026
🌙 Nocturnal When it's spotted during nighttime hours (6pm–6am)

About the Van Gelder's bat

Van Gelder's bat or Van Gelder's big-eared bat (Bauerus dubiaquercus) is a species of vesper bat in the family Vespertilionidae. It is found in Belize, Costa Rica, Honduras, and Mexico. The species is monotypic within its genus. It is part of the tribe Antrozoini within the subfamily Vespertilioninae and is related to the pallid bat (Antrozous pallidus). The bat is found in forest habitat from sea level to elevations as high as 2300 m, although not usually above 1300 m, and is insectivorous and crepuscular. It apparently has a fragmented distribution, and is threatened by deforestation.

The bat was discovered by Richard Van Gelder, then curator of mammalogy at the American Museum of Natural History. The bat was collected on the AMNH Puritan Expedition to Baja California in 1957 on the Tres Maria Islands (south of Baja) by Richard Zweifel (expedition herpetologist) and Oakes Plimpton (expedition assistant). Van Gelder dubbed the bat "dubiaquercus" in honor of the collectors: dubia means "doubt" in Latin, as zweifel does in German; quercus is Latin for "oak".

Van Gelder's bat is found in Central America where its range includes Belize... Wikipedia →

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Calakmul Biosphere Reserve 🇲🇽 Mexico
Insufficient data

More parks will be added in future updates.

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