Mexican Red Rump Tarantula
Tliltocatl vagans (formerly Brachypelma vagans)
1. Deep Soil & Low-Ceiling Safety Setup
2. Two Great Ways to Set Up Your Habitat
Sizing the Tank: Slings vs. Adults
Putting a fingernail-sized baby ('sling') in a giant 10-gallon tank makes it impossible for them to find dinner:
Option A: Spiderlings ('Slings' Under 1.5")
Keep in a vented sling vial or micro acrylic cube (about 3–4× their legspan wide) with 2" of soil, a piece of moss, and a clean tattoo-ink cap or bottlecap for water.
Option B: Juveniles & Adults (2" to 7"+)
A 5- to 10-gallon glass or acrylic enclosure filled halfway up with 4–6" of packed reptile/invertebrate soil and a curved cork bark starter cave.
Ground Burrowers vs. Tree Climbers
Make sure your setup matches where your spider actually lives in nature:
Option A: Ground / Burrowing (Curly Hair, Red Knee, Arizona Blonde)
Wide floor space, deep 4–6" soil for bulldozing, and low ceiling clearance so a clumsy climber can never take a big fall.
Option B: Tree-Dwelling (Pinktoes, Versicolor, Jumping Spiders)
Tall enclosure with lots of side-wall air holes (cross-ventilation!) and tall cork bark reaching near the ceiling.
To Handle or Not to Handle?
Real talk from our invert team: tarantulas don't get cuddly from being held—handling is mostly for us:
Option A: Hands-Off Display Pet (What We Recommend)
Safest for the spider! Use a soft paintbrush to gently tap their back legs and guide them into a catch-cup whenever you need to clean.
Option B: Sit Flat on the Floor (Calm Docile Species Only)
If you do let a calm Curly Hair or Red Knee walk on your open palm, sit on the floor or bed so a sudden bolt can never mean a fatal drop to the floor.
3. Feeding by 'Booty Size' & The Molting Rule
Best Bugs & Big No-Nos:
Top pick—nutritious and won't bite a spider!
Great hunters—MUST remove uneaten crickets after 24h!
Crush worm heads so they can't hide underground
Wild bugs carry lawn sprays & parasites that kill spiders
4. Four Keys to a Happy, Thriving Mexican Red Rump Tarantula
Watch Out for Wire Mesh
Heavy ground tarantulas have two tiny hooks on each foot that can get snagged in cheap woven window-screen lids. Acrylic lids with drilled air holes are way safer!
Overflow the Water Dish
Tarantulas hate being sprayed in the face with a mister! Instead, just overfill their water dish a little bit once a week so one corner of the soil stays damp.
Itchy Belly Hairs
New World tarantulas kick itchy 'urticating hairs' off their butt when annoyed. Don't rub your eyes after working in the tank, and wash your hands with soap!
Upside-Down vs. Death Curl
Flat on their back = happy molting! Right-side-up with all 8 legs curled tightly *underneath* the belly = dehydrated ('death curl')—put their mouthparts right into a shallow puddle of water!
Bring-Home Shopping Checklist
Tap items to check them off on your phone while you shop at Critter Cabana.
Enclosure & Deep Soil
Water Dish & Safe Tools
Live Feeder Bugs
Complete Reference Notes & Oregon Keeping Guide
Species: Tliltocatl vagans (formerly Brachypelma vagans) | Difficulty: 2/5 — Easy | Hardiness: 5/5 — Bulletproof
Critter Cabana & Gresham Pet Supply — Keeping Your Pet Healthy & Thriving
At a Glance
| Common Name | Mexican Red Rump Tarantula | |
| Species | Tliltocatl vagans (Recently reclassified from Brachypelma) | |
| Origin | Scrublands and forests of Mexico and Central America | |
| Adult Size | 5–6 inch leg span | |
| Lifespan | Females: 20+ years | Males: 4–5 years (1-2 years after maturity) |
| Diet Type | Insectivore (Crickets, Roaches, Mealworms) | |
| Activity | Nocturnal (Very bold display spiders that often sit out in the open) | |
| Temperament | "Spirited." They are active, bold, and have a voracious feeding response. | |
| Handleability | Not recommended. While they are a beginner species, they can be skittish and are quick to flick hairs if annoyed. | |
| Venom | Medically insignificant (Comparable to a bee sting, unless allergic) | |
| Urticating Hairs | Yes (They will flick itchy hairs from their abdomen if startled) | |
| Difficulty | 2/5 — Easy (A fantastic beginner spider with a bit more "personality") | |
| Hardiness | 5/5 — Bulletproof (Incredibly resilient and forgiving) |
Why We Love Them: The Mexican Red Rump is an iconic hobby classic. They are heavy-bodied, jet-black spiders with a beautiful patch of vibrant, velvety red hairs on their abdomen. Unlike some "pet rock" tarantulas, the Red Rump is known for being active, visible, and having an incredibly enthusiastic feeding response. If you want a beginner spider that actually moves around and attacks its food, this is the one!
Safety Information
Defense: Their venom is medically insignificant. Their primary defense mechanism is flicking urticating hairs. These hairs can cause severe itching and irritation if they get into your skin or eyes. If you see the spider rubbing its back legs against its abdomen, step back.
Handling Precautions: Because they are a heavy-bodied terrestrial species, a fall from a human hand will rupture their abdomen and kill them instantly. Given their slightly skittish nature, we recommend enjoying them as a display animal rather than handling them.
Housing & Enclosure
Enclosure Type & Size
- Type: Terrestrial / Opportunistic Burrower.
- Minimum: A 5-gallon to 10-gallon glass aquarium or an Exo Terra Low (18x18x12) is perfect for an adult.
- The Height Warning (CRITICAL): You must prioritize floor space over vertical height. If the enclosure is too tall, you must fill it with deep substrate so the distance from the dirt to the ceiling is no more than 1.5x the spider's leg span. A fall from the ceiling is fatal.
Substrate
- Recommended: Coconut fiber (Eco Earth), peat moss, or organic topsoil.
- Depth: Provide 4 to 5 inches of substrate. They love to dig and will create impressive burrows if given the opportunity.
Décor & Enrichment
- Hides: Provide a curved cork bark hide or half-log.
- Water Dish: Provide a shallow water dish. Keep it filled with fresh water at all times. Do not put sponges in the water.
Temperature
| Zone | Temperature |
|---|---|
| Ambient | 70–78°F (21–25°C) |
- Heating: Room temperature is perfect. If you are comfortable in a t-shirt, your tarantula is comfortable. Never use a heat lamp.
Humidity
- Target Range: 50–70% (Moderate).
- How to Maintain: Maintain a moisture gradient. Overflow their water dish once a week to keep the soil immediately around the dish slightly damp. Allow the rest of the enclosure to remain dry. Never let the enclosure become a wet, stagnant swamp.
Diet & Nutrition
The Mexican Red Rump is famous for being a fantastic, aggressive eater.
Primary Diet
- Live crickets, dubia roaches, or mealworms. Ensure the prey is smaller than the spider's abdomen.
Feeding Schedule
| Life Stage | Frequency | Prey Size |
|---|---|---|
| Spiderling (Sling) | Every 4–5 days | Pinhead crickets or small mealworms |
| Juvenile | Every 7 days | Medium crickets |
| Adult | Every 7–10 days | 2-3 Large crickets or 1 Large Roach |
Pre-Molt Fasting
- When they are preparing to molt, even this ravenous eater will refuse food. They will often seal the entrance to their burrow with webbing and dirt. Do not disturb them.
Molting
During the Molt
- DO NOT disturb the spider. It will flip on its back to molt. It is not dead. Do not flip it over.
- Remove any live crickets from the enclosure immediately. A live cricket will eat a molting tarantula alive.
Post-Molt Care
- Wait at least 10–14 days before offering food. Because they are heavy-bodied, it takes a long time for their new fangs to harden.
What We Stock & Use in Our Stores
These are products we carry and recommend for this species. Ask any associate for help finding them in-store.
| Category | Product | Notes |
|---|---|---|
| Enclosure | Aqueon 5-Gallon or 10-Gallon Tank | Prioritize floor space over height |
| Substrate | Zoo Med Eco Earth (Coco Fiber) | Minimum 4-5 inches deep |
| Hides | Zoo Med Natural Cork Bark (Curved) | The perfect starting roof for their hide |
| Tools | Zoo Med 10-inch Feeding Tongs | Highly recommended for safe maintenance |
| Water Dish | Exo Terra Shallow Water Dish (Medium) | Provide fresh water, no sponges |
Care sheet compiled by Critter Cabana & Gresham Pet Supply. For questions, ask any livestock specialist in-store.
Last updated: 2026-08-04
How We Keep Them at Critter Cabana & Gresham Pet Supply
- Oregon Winter Furnace Air vs. Molting Humidity: When Pacific Northwest furnaces kick on from October through April, indoor room humidity drops fast and dries out small enclosures from the top down. Rather than misting the spider or invert directly (which stresses terrestrial species and invites stagnant mold), we keep Mexican Red Rump Tarantula at
50-70% (Moderate)by using a deep moisture-retaining substrate bed (ReptiSoil + Coco Fiber + Sphagnum Moss), overflowing the water dish slightly into one corner, and maintaining cross-ventilation. - Safe Room Heating in the Willamette Valley: If your house drops below 65°F on winter nights, never stick a heat pad on the bottom of a burrowing invertebrate tank—they dig down to escape heat and will cook themselves. Use a low-wattage side-mounted heat mat on a digital thermostat or warm the room ambiently to
species-appropriate warm zone. - Stocked at Newberg & Gresham: At Critter Cabana (Newberg) and Gresham Pet Supply, we stock acrylic and glass invertebrate enclosures, cork bark flats and tubes, bioactive substrates, flightless fruit flies (D. melanogaster and D. hydei), pinhead to adult crickets, dubia roaches, and live Temperate White Springtail and Isopod cultures.
Common Questions (FAQ)
How do I keep my Mexican Red Rump Tarantula warm and humid enough during an Oregon winter?
Target species-appropriate warm zone and 50-70% (Moderate). When Oregon winter furnaces dry out the air, use a deep 3–5 inch substrate mix of Zoo Med ReptiSoil and coco fiber, keep a shallow water dish filled, and dampen one corner of the substrate rather than misting the animal directly. Never put a heat mat underneath a burrowing invertebrate enclosure.
What size enclosure does a Mexican Red Rump Tarantula need?
An adult Mexican Red Rump Tarantula thrives in 5 to 10-Gallon Tank with secure ventilation. For terrestrial tarantulas and scorpions, floor space and deep substrate matter most (keep open fall height low so heavy-bodied species cannot rupture their abdomen); for arboreal species, prioritize vertical cork bark tubes and cross-ventilation.
Can I put isopods in a Mexican Red Rump Tarantula bioactive enclosure?
Around molting tarantulas and scorpions, skip protein-hungry large isopods and stick to Temperate White Springtails (or gentle Dwarf White isopods in humid detritivore setups) so a soft, newly molted animal is never nibbled.
Where can I find Mexican Red Rump Tarantula, cork bark, and feeder insects in Oregon?
We stock live invertebrates, tarantulas, jumping spiders, cork bark flats and tubes, bioactive substrates, and gut-loaded feeder insects at our two exotic animal stores: Critter Cabana in Newberg (514 E First St, 503-537-2887) and Gresham Pet Supply (2185 NW Burnside Rd, 503-665-7606).
