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Mexican Red Rump

Tliltocatl vagans

The red-rump tarantula, famous for the contrast between its velvet-black body and bright red abdominal hairs. Active, fast-growing, hardy, and moderately docile.

Taxonomy
Class:Arachnida
Order:Araneae
Family:Theraphosidae
Subfamily:Theraphosinae
Genus:Tliltocatl
Species:Tliltocatl vagans

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Environment

Terrestrial

Humidity

65 - 80 %

Day temperature

21 - 29 °C

Night temperature

20 - 24 °C

UVB

None

Species description

Geographical Origin and Habitat: Native to Mexico and Central America, where it inhabits tropical rainforests, scrublands, and agricultural fields. They are fossorial spiders that excavate deep burrows under roots or rocks to escape temperature extremes.
Taxonomy and Genetics: A medium-to-large tarantula with a velvet-black carapace, chelicerae, and legs. Its most distinctive feature is the bulbous abdomen covered in dense, long, bright red or scarlet hairs. Leg span can reach up to 16 cm in adult females.
Behavior and Habits: Known for being active burrowers that rearrange their substrate and line their tunnels with thick silk. Their temperament varies; while some are calm, others can be nervous and quick to kick urticating hairs from their abdomen when disturbed.
Morphology: Females are much larger, heavier, and live longer (up to 20 years), while males are smaller, slender, leggy, and live only a few months after reaching maturity.

Care, breeding and tankmates

Terrarium Setup: Requires a horizontal terrarium (minimum 30x30x30 cm). The substrate is crucial: provide at least 10–15 cm of damp peat or coconut fiber compacted well to support burrowing without collapsing. Include a curved cork bark hide and a shallow water dish.
Lighting and Heating: Keep the enclosure in a warm room at 24–26°C. They are photophobic and do not require any direct lighting; high-intensity light can cause stress. Use thermostatically controlled heat mats on the side of the enclosure, never on the bottom.
Humidity and Hydration: Maintain humidity levels between 65% and 75%. Keep the lower layers of the substrate damp by pouring water down one corner of the enclosure, leaving the surface dry. Ensure good ventilation to prevent mold.
Feeding and Supplementation: Highly active predators. Feed adults one large cricket or roach every 15–20 days. Avoid overfeeding to prevent their abdomen from becoming dangerously obese and prone to rupture from small falls. Remove uneaten prey.
Compatibility: Solitary. Cannibalistic behavior is common; they must be housed individually. Introduce sexes only for supervised breeding purposes.
Health and Common Diseases: The main risks are abdominal rupture from falls, and dehydration. If stressed, they kick urticating hairs that cause severe skin irritation and temporary blindness if they contact the eyes. Avoid handling.

Geographic Origin and Distribution

Native to Mexico and Central America, where it inhabits tropical rainforests, scrublands, and agricultural fields. They are fossorial spiders that excavate deep burrows under roots or rocks to escape temperature extremes.

Origin

Central America and Caribbean

Terrestrial invertebrate profile

Diet
No verified data available
Life expectancy
No verified data available
Adult size
No verified data available
Lifestyle/Microhabitat
No verified data available
Activity cycle
No verified data available
Sociality
No verified data available
Reproduction
No verified data available
Venom level
No verified data available
Handling tolerance
No verified data available
Brumation
No verified data available
Molting
No verified data available

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.

Related species

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Last updated: 08/10/2026
Mexican Red Rump (Tliltocatl vagans) Care Guide & Terrarium Setup | Atlarium