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Spice 1 · Kid Friendly
How the Spice System works
Kid friendly
Lower-risk animals a child can help care for, with an adult in charge. For watching, not handling.
WC: Wild caught
Collected from the wild and settled in at Big Z's before it ships. Many species, adults especially, are rarely bred in captivity.
Big Z's notes
About this Fella
Black Hole Spider for sale from Big Z's (Kukulcania arizonica). Comes with a Spice rating and a care guide, and ships packed for the weather.
A crevice weaver from the desert Southwest
Kukulcania arizonica, the Black Hole Spider, is a stocky, velvety spider from the desert Southwest. It builds a silk tube in a crack or crevice and spreads a starburst of silk lines around the entrance to sense prey. Females are dark and often get mistaken for small tarantulas.
It is shy and stays in its retreat. Bites are uncommon, but it is still a venomous spider, so keep it as a display animal. Give it cork and crevices and let it build.
Full care is in the care guide. It covers enclosure size, temperature, humidity, feeding, molting signs and handling limits for this species. Read the Advanced guide, or the shorter Simple guide →
- Lane
- Spice 1 · Kid Friendly
- Source
- WC: wild caught.
Black Hole Spider (Kukulcania arizonica)
Spider
Keeper feedback
$34.99Mixed Sizes WC selectedsizes from $19.99
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Spice 1 · Kid Friendly
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At a glance
The quick read on this fella
- Adult size
- About 2-3 in
- Leg span
- Venom
- Mild venom
- Bites are rare
- Type
- Arboreal
- Climber
- Climate
- 70-85°F · 45-60%
- Dry, light mist for drinking only
- Feeding
- Small prey weekly
- At the web entrance
- Lifespan
- Females 10+ yrs
From our Black Hole Spider care guide. Read the full guide
Live animals ship Mon to Wed
FedEx Standard Overnight $44.99 or Priority Overnight $49.99, both with the Live Arrival Guarantee; free overnight on orders $499.99 and up. FedEx 2Day $34.99 has no guarantee and needs a signed waiver. Pickup in the Phoenix area or at an expo is free (arrange with Big Z first). Weather holds are free and we message you first.
Live arrival support
Every order is packed for that week’s weather. Not sure if Black Hole Spider is your spice level? Message us and we’ll talk it through.
Big Z's here to help
Not sure if Black Hole Spider is your spice level? Message us and we’ll talk it through.
Care guide Shipping and Live Arrival Guarantee
About this Fella Big Z's notes
Black Hole Spider for sale from Big Z's (Kukulcania arizonica). Comes with a Spice rating and a care guide, and ships packed for the weather.
A crevice weaver from the desert Southwest
Kukulcania arizonica, the Black Hole Spider, is a stocky, velvety spider from the desert Southwest. It builds a silk tube in a crack or crevice and spreads a starburst of silk lines around the entrance to sense prey. Females are dark and often get mistaken for small tarantulas.
It is shy and stays in its retreat. Bites are uncommon, but it is still a venomous spider, so keep it as a display animal. Give it cork and crevices and let it build.
Full care is in the care guide. It covers enclosure size, temperature, humidity, feeding, molting signs and handling limits for this species. Read the Advanced guide, or the shorter Simple guide →
- Lane
- Spice 1 · Kid Friendly
- Source
- WC: wild caught.
What ships with this order Care + shipping
- A free care guide for this species
- A heat or cold pack when the forecast calls for it
- Tracking and an arrival window before it ships
- Message Big Z about your animal for as long as you keep it
Care guideSpice 1 · Kid Friendly
Matched care guide
View in Care Guides library
Black Hole Spider
Kukulcania arizonica · Spice 2: Beginner. Baby Buddy: juveniles. Give a vertical crevice or tube and a grit-packed water cap. Bark Buddy: display setup. A vertical cork crevice gives the web a fixed anchor and shows off a secretive spider.
Kukulcania arizonica
Black Hole Spider
Big Z's Quick Verdict: A hardy desert crevice spider that lives in a silk funnel in bark cracks and tubes. Give it a fixed vertical retreat, dry air with low cross vents, and leave its web alone.
Group: Spiders & Other InvertsDifficulty: Spice 2: BeginnerSetup: Crevice webber, vertical bark or tube retreatHandling: Not recommended, fast 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 | 70-85°F |
|---|---|
| Humidity | 45-60%, dry, light mist for drinking only |
| Setup | Crevice webber, vertical bark or tube retreat |
| Substrate | Dry substrate under a vertical bark or tube hide |
| Feeding | Small prey weekly, at the web entrance |
| Handling | Not recommended, fast 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
- Baby Buddy: juveniles. Give a vertical crevice or tube and a grit-packed water cap.
- Bark Buddy: display setup. A vertical cork crevice gives the web a fixed anchor and shows off a secretive spider.
Critical Notes
- Fast when disturbed. Keep hands out during maintenance.
- Premolt: it stops eating and sits tight. Remove uneaten prey and leave it alone until the new exoskeleton hardens.
- Pack the water dish or cap with grit so spiderlings cannot drown.
- A dense funnel traps still, damp air. Vent low on two opposite walls so air moves past the retreat.
- Do not destroy the web retreat, and keep droplets off the silk. Wet webbing can make it abandon the retreat.
Care Basics
- Give it a fixed vertical crevice or tube to web into.
- Vent low on two opposite walls so air moves past the retreat.
- Keep it dry. Mist lightly near the retreat mouth, only as needed for drinking.
- Keep a small water dish or cap packed with grit.
- Feed small prey weekly at the web entrance.
- Leave the webbing in place when you clean.
- Expect it to stay hidden in its web.
Feeding, Growth & Maintenance
- Offer small prey weekly at the web entrance.
- Premolt: it stops eating, dulls in color and sits tight in its retreat. That's normal. Remove uneaten prey, leave it alone, and wait a few days after the molt before feeding.
Current Big Z's catalog: Yes
Kukulcania arizonica
Black Hole Spider: Advanced Care Guide
Keeper Snapshot: A hardy desert crevice spider that lives in a silk funnel in bark cracks and tubes. Give it a fixed vertical retreat, dry air with low cross vents, and leave its web alone.
Group: Spiders & Other InvertsDifficulty: Spice 2: BeginnerSetup: Crevice webber, vertical bark or tube retreatHandling: Not recommended, fast 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 | 70-85°F |
|---|---|
| Humidity | 45-60%, dry, light mist for drinking only |
| Setup Type | Crevice webber, vertical bark or tube retreat |
| Substrate | Dry substrate under a vertical bark or tube hide |
| Feeding | Small prey weekly, at the web entrance |
| Care Difficulty | Spice 2: Beginner |
| Handling | Not recommended, fast 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
- Juveniles: Baby Buddy with a vertical crevice or tube and a grit-packed cap
- Display: vertical bark setup with a cork crevice retreat, web left intact
Warnings First
- Fast when disturbed. Keep hands out during maintenance.
- Premolt: it stops eating and sits tight. Remove uneaten prey and leave it alone until the new exoskeleton hardens.
- Pack the water dish or cap with grit so spiderlings cannot drown.
- A dense funnel traps still, damp air. Vent low on two opposite walls so air moves past the retreat.
- Do not destroy the web retreat, and keep droplets off the silk. Wet webbing can make it abandon the retreat.
Simple Care
- Give it a fixed vertical crevice or tube to web into.
- Vent low on two opposite walls so air moves past the retreat.
- Keep it dry. Mist lightly near the retreat mouth, only as needed for drinking.
- Keep a small water dish or cap packed with grit.
- Feed small prey weekly at the web entrance.
- Leave the webbing in place when you clean.
- Expect it to stay hidden in its web.
Advanced Keeper Notes
Enclosure & Microclimate
- Give it a fixed retreat where it can build a sheet or funnel web, and do not keep cleaning out the silk. It is the spider's home and hunting structure.
- A dense funnel works like a baffle: air from lid vents stops at the silk. Low vents on two opposite walls move air past the retreat and keep the funnel dry after a mist.
- On this dry species more airflow is always better. Ambient sits at 45-60% by itself, and misting is for drinking, not humidity.
- Judge by touch: silk and substrate should feel dry within a few hours of a light mist. Webbing that stays damp needs more airflow.
- Mist near the mouth of the retreat, not into it. The spider gets drinking droplets and the funnel stays dry.
Feeding, Growth & Maintenance
- Offer small prey weekly at the web entrance.
- Premolt: it stops eating, dulls in color and sits tight in its retreat. That's normal. Remove uneaten prey, leave it alone, and wait a few days after the molt before feeding.
Possible Origin / Range
- Likely native range: Southwestern United States and northern Mexico, in dry crevices where it builds web retreats.
- Habitat translation: Dry desert crevices become a vertical bark or tube retreat with web anchor points, low cross vents, drinking mist at the retreat mouth, and minimal disturbance.
Advanced Keeper Details
- Secretive by nature. Expect to see webbing far more often than spider.
- The tube web is its home and hunting structure. Plan cleaning around it and never tear it out.
- Keep moisture indirect. Droplets on the webbing can make it abandon the retreat.
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