Origin And Natural Habitat
Costa Rica is the primary confirmed home of Davus fasciatus — a species often called the Costa Rican Tiger Rump to distinguish it from its close genus relative the Guatemalan Tiger Rump (Davus pentaloris), with which it has been extensively confused and mislabelled in the hobby for years. The two species are distinct despite their visual similarities — D. fasciatus being typically darker and originating from Costa Rica while D. pentaloris carries the more vivid copper-orange carapace and originates from Guatemala and southern Mexico. Understanding this distinction matters practically because specimens sold under either name in the hobby have historically been mixed, and keepers should be aware that care profiles for one apply generally to the other but that the species identity of any given specimen may require verification.
Costa Rica’s Pacific slope and lowland habitats provide the warm, tropical conditions where D. fasciatus constructs its burrows — dry to moderately humid forest floor environments where the spider burrows into workable soil beneath leaf litter and vegetation. Costa Rican Tiger Rumps are avid burrowers found in low humidity areas of their Costa Rican range, preferring the drier forest floor habitats rather than the saturated soils of permanently humid rainforest. This preference is directly reflected in the care profile — a species that does poorly in consistently damp conditions and requires appropriate drainage and ventilation rather than the high-humidity approach appropriate for more moisture-dependent Central American species.
Scientific Classification
Davus fasciatus (O.P.-Cambridge, 1892) belongs to the genus Davus — a Central American genus of New World terrestrial tarantulas characterised by the reddish-orange to dark abdominal striping pattern that gives all Davus species their tiger rump designation. The genus has been subject to taxonomic revision that clarified the fasciatus/pentaloris distinction that had confused the hobby for years. The World Spider Catalog and iNaturalist confirm D. fasciatus (O.P.-Cambridge, 1892) as the current valid name.
Species Overview
Davus fasciatus sits in a rewarding keeper position — a small to compact species with striking visual impact that is beginner to intermediate appropriate in terms of care, active enough to be genuinely engaging to observe, and docile enough that routine maintenance is manageable without the stress of working around a highly reactive New World hair-kicker. Keeper documentation describes it as a docile species that has never kicked hairs or shown a threat pose — a notably calm characterisation for a small New World terrestrial — though the species can be skittish and quick to kick urticating hairs at minimum disturbance in other keeper accounts, suggesting individual variation that keepers should be prepared for. The compact adult size makes it ideal for keepers with limited space, and the active burrowing, webbing, and visible surface behaviour of adults makes it genuinely rewarding to observe.
Appearance And Size
The legs are black — jet black with a copper carapace that creates an immediately striking contrast between the dark legs and the warm copper of the cephalothorax. The abdomen carries bold black tiger-stripe markings against the reddish-orange base colouration that gives all Davus species their common name — the tiger rump pattern that is the genus’s defining visual characteristic. This colour combination of copper carapace, black legs, and tiger-striped orange abdomen gives a compact spider three distinct visual elements that work together to produce a display quality disproportionate to the small adult size.
Adult females reach approximately 4 inches in legspan — a compact to medium adult that suits smaller enclosures well. After reaching three inches of leg length, adults tend to stay outside their burrow — a developmental shift toward surface visibility that makes the adult keeper experience genuinely engaging after the more reclusive juvenile burrowing phase. Growth rate is medium — reaching 4 inches within approximately three years under consistent warm feeding conditions.
Housing
A terrestrial enclosure with floor space as the priority and adequate substrate depth for burrowing — substrate of at least 4 to 6 inches for adults, with a footprint of 15 by 15 to 20 by 20 centimetres suiting adults at 4 inches legspan. Height kept to twice the legspan maximum. A latching lid is standard. The species will use a provided hide rather than exclusively burrowing — if a hide is provided, it might not burrow — so providing both a hide and adequate substrate depth gives the spider its full range of retreat options. A 10 to 15 gallon enclosure suits adults. Our best tarantula enclosure guide covers terrestrial formats appropriate for compact Central American terrestrial species, and our best tarantula sling enclosure guide covers smaller juvenile formats.
Enclosure’s Decorations
Cork bark at substrate level positioned to provide a hide option, with a pre-formed burrow beneath for the spider that prefers to burrow rather than use the above-ground shelter. A shallow water dish provides hydration. Fake plants or foliage give the species webbing anchor points — the species webs up foliage when given some, making plant decoration both aesthetically rewarding and behaviourally appropriate. Our best tarantula hide, best tarantula cork bark, and best tarantula fake plants guides cover appropriate pieces for small Central American terrestrial species.
Substrate
Four to six inches of substrate appropriate for the dry to moderately humid Costa Rican forest floor conditions. The substrate should be kept dry on half the enclosure and dampened on the other half where the water dish is located, then allowed to dry out — a moisture gradient approach that reflects the preference for low humidity documented for this species. Do not overdo the humidity — the dry to moderate character of the Costa Rican habitat means excessive moisture causes problems rather than preventing them. A coconut coir and sand blend gives appropriate drainage. Our best tarantula substrate guide covers dry to lightly moist blends appropriate for Costa Rican lowland terrestrial species.
Water And Humidity
A shallow water dish at all times, refreshed every two to three days. Average humidity of 75 to 80 percent is listed for this species — though other keeper documentation places the appropriate target closer to 60 to 70 percent reflecting the dry habitat preference. The moisture gradient approach — damp on the water dish side, dry on the other — allows the spider to self-regulate without the keeper maintaining a specific ambient humidity with active management. A hygrometer confirms actual conditions, and adequate ventilation prevents moisture accumulation in the enclosure.
Heating And Temperature
Costa Rica’s tropical lowland climate maintains warm temperatures year-round. Temperature of 70 to 80°F suits this species well — low 80s°F producing the best growth rates according to keeper documentation. Most temperate indoor environments provide appropriate conditions without supplemental heat for most of the year. A side-mounted heat mat controlled by a thermostat handles periods when ambient temperatures drop below 68°F. A thermometer at substrate level confirms actual enclosure conditions.
Diet And Nutrition
Crickets, dubia roaches, and other appropriately sized invertebrates. In the wild, these species thrive on crickets, earthworms, and small insects — a broad opportunistic diet. Adults feed every seven to ten days — keeper documentation notes the species occasionally frequents the water dish and eats voraciously when prey is available. Remove uneaten prey within 24 hours. Our best tarantula food guide covers feeder options and sizing for compact Central American terrestrial species.
Compatibility
Solitary only. The genus is noted as cannibalistic when kept communally — a characteristic of the Davus genus that means even the relatively docile D. fasciatus should never be housed with conspecifics.
Behavior And Temperament
Docile with individual variation toward skittishness — Costa Rican Tiger Rumps are active species that spend a large part of their time spinning webs and burrowing, making them genuinely engaging observation animals despite the small adult size. Urticating hairs are present and may be deployed when the spider is startled. The developmental shift toward surface visibility once adults reach three inches of legspan makes the tiger rump patterning regularly accessible to observation without disturbance.
Handling
Possible with care given the generally docile temperament, though the skittishness noted in some keeper accounts means slow, deliberate movements are essential. Standard floor-level protocol applies. The compact adult size makes controlling a startled specimen more challenging than with larger species. Venom is medically insignificant to healthy humans as a New World species.
Health And Lifespan
Female lifespan is not precisely documented for D. fasciatus specifically — based on the closely related D. pentaloris documented at 11 or more years for females, a similar range is a reasonable expectation. The species is described as a very delightful species to own with reliable care requirements. The primary health consideration is avoiding excessive substrate moisture for a species from drier Costa Rican habitats. Our tarantula dehydration article covers the opposite concern — dehydration in a species where the water dish placement matters for providing access without saturating the whole enclosure.
Price
Available in captive-bred form with reasonable regularity from specialist vendors, though the fasciatus/pentaloris mislabelling history means keepers should verify species identity before purchasing. Slings typically sell for $15 to $40 USD. Juveniles range from $30 to $60. Confirmed adult females command $50 to $100 depending on size and confirmed species identification. Source captive-bred specimens only — Costa Rica has wildlife protection legislation covering its native tarantula fauna. Everything needed to set up an appropriate enclosure for this tiger-striped Costa Rican charmer is on our best tarantula products page.