AnimaliaHighest rank in taxonomy. Groups all life into domains: Animalia, Plantae, Fungi, etc.IUCN LCInternational Union for Conservation of Nature — the world authority on species extinction risk, using standardized criteria. — Least Concern — widespread and abundant; not at immediate risk of extinction.In ProgressCurrent stage of this record in the editorial review workflow. Recent Sighting
Pteronotus davyi
Davy's Naked-backed Bat
Gray, 1838
Detailed Texts Multi-lang
A medium-sized bat characterized by the membranes of its wings joining at the midline of the back, creating the appearance of a naked back.
Added by
Anonymous Curator
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Under Review
Last modified by
Julia Trouin
TaxonomyBiological classification ranks placing this species within the tree of life, from Kingdom down to Genus.
PhylumRank below Kingdom. Groups organisms sharing a fundamental body plan (e.g., Chordata = vertebrates and some invertebrates).Chordata
ClassRank below Phylum. Subdivides by structural traits (e.g., Mammalia, Aves, Reptilia, Insecta).Mammalia
OrderRank below Class. Groups related families sharing common ancestry (e.g., Carnivora, Primates).Chiroptera
FamilyRank below Order. Groups closely related genera (e.g., Felidae = cats, Canidae = dogs).Mormoopidae
GenusRank just above Species. The first word in the two-part binomial scientific name.Pteronotus
Taxonomic AuthorityThe scientist who first formally described and published this species, followed by the year of publication.Gray, 1838
Record Completeness
96%Coming soon
Ecology & StatusHow this species lives: habitat preferences, diet, behavior, population status, and role in its ecosystem.
OriginWhether the species is native (evolved here), endemic (found only here), or introduced by human activity.
Native
Population TrendDirection of change in population size over time: increasing, stable, decreasing, or unknown.
Stable
Breeding SeasonTime of year when this species typically reproduces or flowers.
Year Round
Trophic RolePosition in the food chain: producer, herbivore, carnivore, omnivore, decomposer, or parasite.
Insectivore
Recent SightingsWhether this species has been observed in the wild in Costa Rica within recent years.
Yes
Habitat SummaryOverview of the specific ecosystems and environments where this species is found in Costa Rica. Multi-lang
Inhabits dry forests, semi-arid regions, and tropical scrublands; often roosts in hot caves and tunnels.BehaviourDaily activity patterns, movement, territory use, foraging style, and seasonal behavioral changes. Multi-lang
Nocturnal; highly gregarious, forming massive colonies in roosting sites.Social ActivitySocial structure: whether the species is solitary, paired, or colonial; hierarchy and communication. Multi-lang
Form very large colonies, sometimes sharing roosts with other bat species.Feeding GuildWhat the species eats, how it forages or hunts, and its role as a consumer in the food web. Multi-lang
Aerial insectivore.Trophic Chain DetailsSpecific interactions in local food webs: prey species, predators, competitors, and scavengers. Multi-lang
Insectivore; feeds on moths, beetles, and other flying insects.Reproductive BehaviourMating strategies, courtship displays, nesting or spawning behavior, and parental care. Multi-lang
Seasonal breeding; females give birth to a single pup.Physical Measures
Length (cm)
4.5 - 6.0 cm
Weight (Grams)
6 g - 12 g
Offspring per cycleTypical number of young (live births, eggs, or seeds) produced by one adult in a single reproductive event or breeding season.1 - 1
Sexual DimorphismObservable physical differences between males and females of the same species (e.g., size, coloration, features).Yes
Lifespan
Sexual MaturityAge at which the individual becomes capable of reproducing for the first time.
8 - 10 Months
Gestation / IncubationDuration from fertilization to birth (mammals) or to hatching (egg-laying species).
3 - 4
Lifespan EstimatedExpected duration of life from birth to natural death under wild conditions.
Males1 - 3 Years
Females1 - 3 Years
Sexual DimorphismPhysical differences in size, coloration, or morphology between males and females of this species.
Males Multi-lang
Males are slightly larger and have more developed glandular structures.
Females Multi-lang
Females are slightly smaller with less prominent glands.
Evolutionary AdaptationsInherited traits and behaviors that improve the species' survival and reproduction in its specific environment. Multi-lang
Naked-back wing morphology facilitates efficient flight; high-intensity echolocation for foraging in clutter.
Main ThreatsDocumented pressures reducing the population: habitat loss, hunting, disease, climate change, and invasive species. Multi-lang
Disturbance of cave roosts, mining activities, and habitat loss in arid zones.
Interesting FactsSurprising or notable facts that highlight what makes this species unique or ecologically important. Multi-lang
They are capable of flying at high speeds and performing complex aerial maneuvers while hunting insects.