Care guide
Oklahoma Brown Tarantula (Texas Brown Tarantula)
Aphonopelma hentzi
One of the most common, most collected wild tarantulas in the US Great Plains: sturdy, docile, and famous for the fall mating-season migrations when males wander roads by the hundreds. About as beginner-friendly as tarantulas get.
Aphonopelma hentzi
Oklahoma Brown Tarantula (Texas Brown Tarantula): Advanced Care Guide
Keeper Snapshot: One of the most common, most collected wild tarantulas in the US Great Plains: sturdy, docile, and famous for the fall mating-season migrations when males wander roads by the hundreds. About as beginner-friendly as tarantulas get.
Group: TarantulasDifficulty: Spice 2: BeginnerSetup: Terrestrial burrowing tarantula, simple beginner setupHandling: Handling discouraged. Kicks urticating hairs when disturbed.
Use This Guide Safely
- Confirm the exact animal. Match this guide to the species, locality, size, and life stage on your label. If the ID is uncertain, use the more conservative part of the range and ask before changing the setup.
- Change one thing at a time. Treat temperature and humidity as target zones, then watch posture, burrowing, drinking, feeding, and molt behavior before making another adjustment.
- Respect the handling boundary. If the guide says no handling, fast, defensive, or medically significant, plan transfers with catch cups, locked lids, and no bare hands. For serious bites, stings, or symptoms, seek emergency medical care.
Quick Snapshot
| Temperature | 70-82°F |
|---|---|
| Humidity | Low-Moderate ambient (40-55%), generously ventilated; dry substrate, shallow dish |
| Setup Type | Terrestrial burrowing tarantula, simple beginner setup |
| Substrate | Dry-leaning burrowing substrate (coco fiber/soil mix), 4-6in deep with a starter hide |
| Feeding | 1/4-3/8" crickets for juveniles, 3/4-1" for adults (no larger than body length); juveniles 2x/week, adults every 1-2 weeks, offered at dusk |
| Care Difficulty | Spice 2: Beginner |
| Handling | Handling discouraged. Kicks urticating hairs when disturbed. |
Humidity zones: Very Low under 30% - Low 30-60% - Low-Moderate 40-70% - Moderate 60-80% - Moderate-High 70-85% - High 80%+ - Very High 90%+
Enclosure Format / Size Class
- sling/juvenile burrow setup
- adult terrestrial enclosure with 4-6in dig depth, 4-5.5in leg span
Warnings First
- Kicks urticating hairs from the abdomen as a first line of defense before any bite
- Bite is not medically significant but hairs can irritate skin/eyes
- Extremely slow growing and long-lived; females can live 20-25+ years
- Wild-caught adult males are often collected during fall migration and have a naturally short remaining lifespan after mating
- A 20-year animal spends its first years small. Keep pebbles in the water dish for that whole stretch so a juvenile cannot drown.
Simple Care
- Give a simple hide and 4-6in of substrate for a burrow start; this species digs but doesn't require elaborate tunnels.
- Keep mostly dry with a shallow water dish; overly damp substrate causes more problems than underwatering. Put pebbles in the dish so slings cannot drown.
- Vents low on two opposite walls so air crosses the floor and under the hide, not just the lid space.
- Feed appropriately sized roaches or crickets; adults can skip meals for weeks without concern.
- Avoid unnecessary handling. A tarantula kicking urticating hairs is telling you to back off.
Advanced Keeper Notes
Enclosure & Microclimate
- A. hentzi is an opportunistic burrower rather than an obligate one; a hide plus loose substrate is usually enough, though it will dig given the depth.
- Ventilation should be generous. This is a dry, open-country species and does poorly in stagnant, overly humid setups.
- Generous means placed low as well as plentiful. Put vents on two opposite walls at or just above the substrate, so air crosses the floor and moves under the hide where the spider sits. A terrestrial enclosure vented only through the lid exchanges the air above the animal while a damp pocket can persist beneath the cork after a dish spill, and that pocket is the stagnant condition this note is warning about.
- On a dry, open-country species the ventilation and humidity relationship is one-directional: more airflow is always better. Ambient sits at 40 to 55% by itself and dropping lower is harmless, because this spider hydrates from the dish rather than the air.
- Judge by hand rather than by gauge. Substrate should read dry from surface to burrow depth except right around the dish, and any spill should dry back within a day or two.
- Keep the shallow dish full and put pebbles or coarse grit in it so the waterline sits below the rim. With 20-plus year lifespans and glacial growth, this animal is small enough to drown in an adult-scaled dish for years, and a juvenile lost that way is a decade of growth gone.
- If a premolt or freshly-molted animal needs a damp option, wet the substrate under the hide rather than misting. That creates a humid microclimate where it shelters and leaves the open floor dry and moving air.
Feeding, Growth & Maintenance
- Feeding: crickets or roaches no larger than the tarantula's body length (leg span excluded): roughly 1/4-3/8in for juveniles, 3/4-1in for adults. Offer in the evening; juveniles take prey twice weekly, adults do fine every 1-2 weeks, and this species' slow metabolism means weeks-long fasts (especially pre-molt or for wild-caught adult males post-breeding season) are completely normal.
- Growth: extremely slow. Females can take 8-10+ years to mature and molt only once a year or less as adults; males mature faster (3-5 years) but live only 1-2 years after their final molt.
- Maintenance: remove uneaten prey within a day or two, keep the water dish filled, and stop feeding entirely at the first signs of premolt (dark, dull abdomen, reduced appetite) until several days after the new exoskeleton has hardened.
Possible Origin / Range
- Likely native range: Great Plains and south-central United States, especially Texas and Oklahoma, in dry grassland and scrubland burrows.
- Habitat translation: A simple, dry-leaning terrestrial setup with a starter hide and digging depth. Genuinely low-effort for an experienced or first-time tarantula keeper.
Advanced Keeper Details
- Famous for autumn 'tarantula migrations' in Texas/Oklahoma, when mature males leave their burrows en masse to search for females, often seen crossing roads. Most wild-caught adult males in the trade were collected during this period and are naturally near the end of their lifespan.
- Females are dramatically longer-lived than males (20-25+ years vs 1-2 years post-maturity for males), so a wild-caught mature male is a different long-term commitment than a captive-bred juvenile female.
- Urticating hairs (flicked from the abdomen with the hind legs) are the primary defense; repeated exposure can sensitize a keeper's skin/eyes over time, so avoid leaning over an agitated animal.
Aphonopelma hentzi
Oklahoma Brown Tarantula (Texas Brown Tarantula)
Big Z's Quick Verdict: One of the most common, most collected wild tarantulas in the US Great Plains: sturdy, docile, and famous for the fall mating-season migrations when males wander roads by the hundreds. About as beginner-friendly as tarantulas get.
Group: TarantulasDifficulty: Spice 2: BeginnerSetup: Terrestrial burrowing tarantula, simple beginner setupHandling: Handling discouraged. Kicks urticating hairs when disturbed.
Use This Guide Safely
- Confirm the exact animal. Match this guide to the species, locality, size, and life stage on your label. If the ID is uncertain, use the more conservative part of the range and ask before changing the setup.
- Change one thing at a time. Treat temperature and humidity as target zones, then watch posture, burrowing, drinking, feeding, and molt behavior before making another adjustment.
- Respect the handling boundary. If the guide says no handling, fast, defensive, or medically significant, plan transfers with catch cups, locked lids, and no bare hands. For serious bites, stings, or symptoms, seek emergency medical care.
Quick Care Snapshot
| Temp | 70-82°F |
|---|---|
| Humidity | Low-Moderate ambient (40-55%), generously ventilated; dry substrate, shallow dish |
| Setup | Terrestrial burrowing tarantula, simple beginner setup |
| Substrate | Dry-leaning burrowing substrate (coco fiber/soil mix), 4-6in deep with a starter hide |
| Feeding | 1/4-3/8" crickets for juveniles, 3/4-1" for adults (no larger than body length); juveniles 2x/week, adults every 1-2 weeks, offered at dusk |
| Handling | Handling discouraged. Kicks urticating hairs when disturbed. |
Humidity zones: Very Low under 30% - Low 30-60% - Low-Moderate 40-70% - Moderate 60-80% - Moderate-High 70-85% - High 80%+ - Very High 90%+
Recommended Big Z's Setup
- Burrow Buddy for slings/juveniles
- larger terrestrial Burrow Buddy setup for adults
Critical Notes
- Kicks urticating hairs from the abdomen as a first line of defense before any bite
- Bite is not medically significant but hairs can irritate skin/eyes
- Extremely slow growing and long-lived; females can live 20-25+ years
- Wild-caught adult males are often collected during fall migration and have a naturally short remaining lifespan after mating
- A 20-year animal spends its first years small. Keep pebbles in the water dish for that whole stretch so a juvenile cannot drown.
Care Basics
- Give a simple hide and 4-6in of substrate for a burrow start; this species digs but doesn't require elaborate tunnels.
- Keep mostly dry with a shallow water dish; overly damp substrate causes more problems than underwatering. Put pebbles in the dish so slings cannot drown.
- Vents low on two opposite walls so air crosses the floor and under the hide, not just the lid space.
- Feed appropriately sized roaches or crickets; adults can skip meals for weeks without concern.
- Avoid unnecessary handling. A tarantula kicking urticating hairs is telling you to back off.
Feeding, Growth & Maintenance
- Feeding: crickets or roaches no larger than the tarantula's body length (leg span excluded): roughly 1/4-3/8in for juveniles, 3/4-1in for adults. Offer in the evening; juveniles take prey twice weekly, adults do fine every 1-2 weeks, and this species' slow metabolism means weeks-long fasts (especially pre-molt or for wild-caught adult males post-breeding season) are completely normal.
- Growth: extremely slow. Females can take 8-10+ years to mature and molt only once a year or less as adults; males mature faster (3-5 years) but live only 1-2 years after their final molt.
- Maintenance: remove uneaten prey within a day or two, keep the water dish filled, and stop feeding entirely at the first signs of premolt (dark, dull abdomen, reduced appetite) until several days after the new exoskeleton has hardened.
Current Big Z's catalog: Yes
Aphonopelma hentzi
Oklahoma Brown Tarantula (Texas Brown Tarantula): Advanced Care Guide
Keeper Snapshot: One of the most common, most collected wild tarantulas in the US Great Plains: sturdy, docile, and famous for the fall mating-season migrations when males wander roads by the hundreds. About as beginner-friendly as tarantulas get.
Group: TarantulasDifficulty: Spice 2: BeginnerSetup: Terrestrial burrowing tarantula, simple beginner setupHandling: Handling discouraged. Kicks urticating hairs when disturbed.
Use This Guide Safely
- Confirm the exact animal. Match this guide to the species, locality, size, and life stage on your label. If the ID is uncertain, use the more conservative part of the range and ask before changing the setup.
- Change one thing at a time. Treat temperature and humidity as target zones, then watch posture, burrowing, drinking, feeding, and molt behavior before making another adjustment.
- Respect the handling boundary. If the guide says no handling, fast, defensive, or medically significant, plan transfers with catch cups, locked lids, and no bare hands. For serious bites, stings, or symptoms, seek emergency medical care.
Quick Snapshot
| Temperature | 70-82°F |
|---|---|
| Humidity | Low-Moderate ambient (40-55%), generously ventilated; dry substrate, shallow dish |
| Setup Type | Terrestrial burrowing tarantula, simple beginner setup |
| Substrate | Dry-leaning burrowing substrate (coco fiber/soil mix), 4-6in deep with a starter hide |
| Feeding | 1/4-3/8" crickets for juveniles, 3/4-1" for adults (no larger than body length); juveniles 2x/week, adults every 1-2 weeks, offered at dusk |
| Care Difficulty | Spice 2: Beginner |
| Handling | Handling discouraged. Kicks urticating hairs when disturbed. |
Humidity zones: Very Low under 30% - Low 30-60% - Low-Moderate 40-70% - Moderate 60-80% - Moderate-High 70-85% - High 80%+ - Very High 90%+
Enclosure Format / Size Class
- sling/juvenile burrow setup
- adult terrestrial enclosure with 4-6in dig depth, 4-5.5in leg span
Warnings First
- Kicks urticating hairs from the abdomen as a first line of defense before any bite
- Bite is not medically significant but hairs can irritate skin/eyes
- Extremely slow growing and long-lived; females can live 20-25+ years
- Wild-caught adult males are often collected during fall migration and have a naturally short remaining lifespan after mating
- A 20-year animal spends its first years small. Keep pebbles in the water dish for that whole stretch so a juvenile cannot drown.
Simple Care
- Give a simple hide and 4-6in of substrate for a burrow start; this species digs but doesn't require elaborate tunnels.
- Keep mostly dry with a shallow water dish; overly damp substrate causes more problems than underwatering. Put pebbles in the dish so slings cannot drown.
- Vents low on two opposite walls so air crosses the floor and under the hide, not just the lid space.
- Feed appropriately sized roaches or crickets; adults can skip meals for weeks without concern.
- Avoid unnecessary handling. A tarantula kicking urticating hairs is telling you to back off.
Advanced Keeper Notes
Enclosure & Microclimate
- A. hentzi is an opportunistic burrower rather than an obligate one; a hide plus loose substrate is usually enough, though it will dig given the depth.
- Ventilation should be generous. This is a dry, open-country species and does poorly in stagnant, overly humid setups.
- Generous means placed low as well as plentiful. Put vents on two opposite walls at or just above the substrate, so air crosses the floor and moves under the hide where the spider sits. A terrestrial enclosure vented only through the lid exchanges the air above the animal while a damp pocket can persist beneath the cork after a dish spill, and that pocket is the stagnant condition this note is warning about.
- On a dry, open-country species the ventilation and humidity relationship is one-directional: more airflow is always better. Ambient sits at 40 to 55% by itself and dropping lower is harmless, because this spider hydrates from the dish rather than the air.
- Judge by hand rather than by gauge. Substrate should read dry from surface to burrow depth except right around the dish, and any spill should dry back within a day or two.
- Keep the shallow dish full and put pebbles or coarse grit in it so the waterline sits below the rim. With 20-plus year lifespans and glacial growth, this animal is small enough to drown in an adult-scaled dish for years, and a juvenile lost that way is a decade of growth gone.
- If a premolt or freshly-molted animal needs a damp option, wet the substrate under the hide rather than misting. That creates a humid microclimate where it shelters and leaves the open floor dry and moving air.
Feeding, Growth & Maintenance
- Feeding: crickets or roaches no larger than the tarantula's body length (leg span excluded): roughly 1/4-3/8in for juveniles, 3/4-1in for adults. Offer in the evening; juveniles take prey twice weekly, adults do fine every 1-2 weeks, and this species' slow metabolism means weeks-long fasts (especially pre-molt or for wild-caught adult males post-breeding season) are completely normal.
- Growth: extremely slow. Females can take 8-10+ years to mature and molt only once a year or less as adults; males mature faster (3-5 years) but live only 1-2 years after their final molt.
- Maintenance: remove uneaten prey within a day or two, keep the water dish filled, and stop feeding entirely at the first signs of premolt (dark, dull abdomen, reduced appetite) until several days after the new exoskeleton has hardened.
Possible Origin / Range
- Likely native range: Great Plains and south-central United States, especially Texas and Oklahoma, in dry grassland and scrubland burrows.
- Habitat translation: A simple, dry-leaning terrestrial setup with a starter hide and digging depth. Genuinely low-effort for an experienced or first-time tarantula keeper.
Advanced Keeper Details
- Famous for autumn 'tarantula migrations' in Texas/Oklahoma, when mature males leave their burrows en masse to search for females, often seen crossing roads. Most wild-caught adult males in the trade were collected during this period and are naturally near the end of their lifespan.
- Females are dramatically longer-lived than males (20-25+ years vs 1-2 years post-maturity for males), so a wild-caught mature male is a different long-term commitment than a captive-bred juvenile female.
- Urticating hairs (flicked from the abdomen with the hind legs) are the primary defense; repeated exposure can sensitize a keeper's skin/eyes over time, so avoid leaning over an agitated animal.