Medically significant âš This animal's venom can need real medical attention. Adults only, a locked escape-proof enclosure, and no free handling, ever.CB: Captive bredHatched in captivity, not collected from the wild. It has only ever known enclosure life, so it's used to the kind of setup it's heading to.
Big Z's notes
About this Fella
Ecuadorian Thick Tail Scorpion for sale from Big Z's (Tityus simonsi). Spice-rated keeper notes, care guidance, and live-arrival packing where eligible.
A Tityus. That genus name is the warning.
Tityus simonsi, the Ecuadorian Thick Tail, is a South American buthid in the genus responsible for the serious scorpion stings of Brazil and the Andes. Slender, quick, and a climber. These arrived at 0.5 to 1 inch.
Spice Level 5: Extreme. Medically significant venom. Display only, no handling, double containment, tongs and a catch cup for every service, and a keeper who has kept hot buthids before. Check local legality before ordering; a sting needs professional medical care. Read the Big Z's care guide before it arrives.
The numbers live in the care guide. Enclosure size, temps, humidity, feeding schedule, premolt signs, handling boundaries: it's all in the care guide for this exact fella. Start with the full Advanced guide, or click for the quick Open the Simple version →
Lane
Spice 5 — Extreme
Source
CB: captive-bred.
Lifestyle
Terrestrial: a ground dweller. Floor space and a hide.
Handling
None. Forceps and a catch cup for all maintenance.
Medical
Medically significant venom.
Before it ships
Big Z confirms every Spice 5 order with the keeper before ship day.
📦Live arrival supportBig Z packs every order with weather-aware care. Not sure if Ecuadorian Thick Tail Scorpion is your spice level? Message us anytime, happy to talk it through.
💬Big Z's here to helpNot sure if Ecuadorian Thick Tail Scorpion is your spice level? Message us anytime, happy to talk it through.
🌶Spice 5 supportBig Z's on the dot for these: reach out anytime if you want a hand with the enclosure and lock-in-lid plan, or just want it looked over before you order.
Ecuadorian Thick Tail Scorpion for sale from Big Z's (Tityus simonsi). Spice-rated keeper notes, care guidance, and live-arrival packing where eligible.
A Tityus. That genus name is the warning.
Tityus simonsi, the Ecuadorian Thick Tail, is a South American buthid in the genus responsible for the serious scorpion stings of Brazil and the Andes. Slender, quick, and a climber. These arrived at 0.5 to 1 inch.
Spice Level 5: Extreme. Medically significant venom. Display only, no handling, double containment, tongs and a catch cup for every service, and a keeper who has kept hot buthids before. Check local legality before ordering; a sting needs professional medical care. Read the Big Z's care guide before it arrives.
The numbers live in the care guide. Enclosure size, temps, humidity, feeding schedule, premolt signs, handling boundaries: it's all in the care guide for this exact fella. Start with the full Advanced guide, or click for the quick Open the Simple version →
Lane
Spice 5 — Extreme
Source
CB: captive-bred.
Lifestyle
Terrestrial: a ground dweller. Floor space and a hide.
Handling
None. Forceps and a catch cup for all maintenance.
Medical
Medically significant venom.
Before it ships
Big Z confirms every Spice 5 order with the keeper before ship day.
What ships with this order
Care + shipping
Comes with a free species-oriented care guide
Heat / cold pack as needed for the week's forecast
Tityus spp. - Spice 5: Extreme. Baby Buddy: 2i-3i instars only, with escape-proof ventilation.; Secure small enclosure: grow-outs, with many tiny low vents, one tight hide and secondary containment for every transfer.
Identity confidence: provisional. This is a genus, group, or trade name rather than a confirmed species. Treat it as the closest match we can stand behind, and use the more conservative end of any range.
Brazilian Yellow & Black Scorpions
Big Z's Quick Verdict: Among the most medically significant scorpions on earth. T. serrulatus kills children in Brazil every year, breeds without a male, and is illegal in much of the world. Hot keepers only, zero margin for error.
Group: Industry StaplesDifficulty: Spice 5: ExtremeSetup: Dry escape-proof enclosure, one tight hideHandling: No handling, long tools and containment only
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
75-85°F
Humidity
45-60%, dry substrate, one humid retreat
Setup
Dry escape-proof enclosure, one tight hide
Substrate
Dry soil/sand mix, tight hide, one small damp spot
Feeding
Young every 4-7 days, adults roughly weekly
Handling
No handling, long tools and containment only
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: 2i-3i instars only, with escape-proof ventilation.
Secure small enclosure: grow-outs, with many tiny low vents, one tight hide and secondary containment for every transfer.
Critical Notes
Medically significant, among the deadliest scorpions in the world. T. serrulatus has killed children; antivenom isn't available in most countries.
Strict no contact. Secondary containment, long tools and a catch system every time, never on an open table.
Parthenogenetic: one female can produce broods with no male. Have containment ready before it happens.
Instars can appear between checks and drown in open water. Keep the dish permanently packed with pebbles.
Illegal or restricted in many places, including many US states and much of the EU. Check your local laws first.
Tiny instars slip through gaps. Use many small vents, never a few large openings.
Care Basics
Put security first, everything else second.
Keep it dry with one small humid retreat under the hide.
Use many small vents low on two opposite walls, not a few big ones in the lid.
Keep a shallow water dish permanently packed with pebbles.
Keep the layout bare so you can see the scorpion before you open anything.
Never handle, and never open it on an open table. Use tools and a catch system.
Recharge the humid retreat with a pipette instead of misting.
Feeding, Growth & Maintenance
Small crickets or roach nymphs at or under body length, smaller for instars. Young every 4-7 days, adults roughly weekly. Remove uneaten prey within a day.
Drop prey with long tongs over a catch container. Never feed or do maintenance on an open desk.
Growth: matures over roughly 5-6 molts. Pull feeders when it goes off food, and leave the soft, pale new molt alone until it hardens.
Don't disturb a female carrying first-instar young.
Hydrate through prey plus a tiny damp corner or the pebble dish, not misting.
Current Big Z's catalog: No
Tityus spp.
Identity confidence: provisional. This is a genus, group, or trade name rather than a confirmed species. Treat it as the closest match we can stand behind, and use the more conservative end of any range.
Brazilian Yellow & Black Scorpions: Advanced Care Guide
Keeper Snapshot: Among the most medically significant scorpions on earth. T. serrulatus kills children in Brazil every year, breeds without a male, and is illegal in much of the world. Hot keepers only, zero margin for error.
Group: Industry StaplesDifficulty: Spice 5: ExtremeSetup: Dry escape-proof enclosure, one tight hideHandling: No handling, long tools and containment only
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
75-85°F
Humidity
45-60%, dry substrate, one humid retreat
Setup Type
Dry escape-proof enclosure, one tight hide
Substrate
Dry soil/sand mix, tight hide, one small damp spot
Feeding
Young every 4-7 days, adults roughly weekly
Care Difficulty
Spice 5: Extreme
Handling
No handling, long tools and containment only
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
Instars (2i-3i): Baby Buddy with escape-proof ventilation and a pebble-packed dish
Grow-outs: secure small enclosure, dry substrate, one tight hide, bare layout
Warnings First
Medically significant, among the deadliest scorpions in the world. T. serrulatus has killed children; antivenom isn't available in most countries.
Strict no contact. Secondary containment, long tools and a catch system every time, never on an open table.
Parthenogenetic: one female can produce broods with no male. Have containment ready before it happens.
Instars can appear between checks and drown in open water. Keep the dish permanently packed with pebbles.
Illegal or restricted in many places, including many US states and much of the EU. Check your local laws first.
Tiny instars slip through gaps. Use many small vents, never a few large openings.
Simple Care
Put security first, everything else second.
Keep it dry with one small humid retreat under the hide.
Use many small vents low on two opposite walls, not a few big ones in the lid.
Keep a shallow water dish permanently packed with pebbles.
Keep the layout bare so you can see the scorpion before you open anything.
Never handle, and never open it on an open table. Use tools and a catch system.
Recharge the humid retreat with a pipette instead of misting.
Advanced Keeper Notes
Enclosure & Microclimate
Many small vents low on two opposite walls beat a few big lid vents. You get real airflow across the substrate with no gap an instar could pass through.
Still air grows cuticle fungus under the hide, even in a dry enclosure. Airflow holds 45-60% on its own, so never close vents down.
Check by hand during tool-based maintenance: open substrate dry, retreat lightly damp and drying back over a few days. Nothing drying out means it needs more airflow.
Keep the scorpion visible before you open anything. Simplicity beats display here.
Feeding, Growth & Maintenance
Small crickets or roach nymphs at or under body length, smaller for instars. Young every 4-7 days, adults roughly weekly. Remove uneaten prey within a day.
Drop prey with long tongs over a catch container. Never feed or do maintenance on an open desk.
Growth: matures over roughly 5-6 molts. Pull feeders when it goes off food, and leave the soft, pale new molt alone until it hardens.
Don't disturb a female carrying first-instar young.
Hydrate through prey plus a tiny damp corner or the pebble dish, not misting.
Possible Origin / Range
Likely native range: South America: Brazil and neighboring countries, in scrub, forest and urban habitats.
Habitat translation: Scrub, forest and city edges become a small, dry, escape-proof enclosure with one tight hide and a small moisture point, built for total containment, never interaction.
Advanced Keeper Details
Hobby species: T. serrulatus (Brazilian yellow, the dangerous one), T. stigmurus (Brazilian black), T. bahiensis and T. obscurus.
T. serrulatus is among the most medically significant scorpions anywhere, responsible for human deaths in Brazil, especially children.
Legal note: illegal to keep without permits in many US states and much of the EU. Check your local laws before you buy.
Hot-keeper specialty only. A lone female can produce surprise broods, so plan offspring containment first.
Spice 5: Hottest in the houseExperienced keepers only: secure lock-in lids, a real plan, no free handling. Big Z is on the dot if you want yours looked over first.
CB + WC: Depends on the sizeThis listing has both. Some sizes are captive bred and some are wild caught, and every size is marked CB or WC, so you know exactly which one you're getting.Arboreal: a climberLives up off the ground. Give it height, vertical cork bark and anchor points to web or perch on. Bark Buddy territory.Medically significant âš This animal's venom can need real medical attention. Adults only, a locked escape-proof enclosure, and no free handling, ever.
Spice 5: Hottest in the houseExperienced keepers only: secure lock-in lids, a real plan, no free handling. Big Z is on the dot if you want yours looked over first.
CB: Captive bredHatched in captivity, not collected from the wild. It has only ever known enclosure life, so it's used to the kind of setup it's heading to.Terrestrial: a ground dwellerLives on the floor. Give it floor space more than height, a hide, and a few inches of substrate. Keep climbs short so a fall stays harmless.Medically significant âš This animal's venom can need real medical attention. Adults only, a locked escape-proof enclosure, and no free handling, ever.
Spice 5: Hottest in the houseExperienced keepers only: secure lock-in lids, a real plan, no free handling. Big Z is on the dot if you want yours looked over first.
CB: Captive bredHatched in captivity, not collected from the wild. It has only ever known enclosure life, so it's used to the kind of setup it's heading to.Terrestrial: a ground dwellerLives on the floor. Give it floor space more than height, a hide, and a few inches of substrate. Keep climbs short so a fall stays harmless.Medically significant âš This animal's venom can need real medical attention. Adults only, a locked escape-proof enclosure, and no free handling, ever.
Spice 5: Hottest in the houseExperienced keepers only: secure lock-in lids, a real plan, no free handling. Big Z is on the dot if you want yours looked over first.
WC: Wild caughtCollected from its natural habitat, then settled in at Big Z's before it ships. Plenty of species, adults especially, are rarely bred in captivity, so wild caught is how they reach the hobby.Fossorial: a burrowerDigs in and lives underground. Give it deep, packable substrate and a starter burrow, then expect to see it less. Burrow Buddy territory.Medically significant âš This animal's venom can need real medical attention. Adults only, a locked escape-proof enclosure, and no free handling, ever.
Vietnamese Yellow Leg Centipede (Scolopendra dehaani)
Spice 5: Hottest in the houseExperienced keepers only: secure lock-in lids, a real plan, no free handling. Big Z is on the dot if you want yours looked over first.
WC: Wild caughtCollected from its natural habitat, then settled in at Big Z's before it ships. Plenty of species, adults especially, are rarely bred in captivity, so wild caught is how they reach the hobby.Fossorial: a burrowerDigs in and lives underground. Give it deep, packable substrate and a starter burrow, then expect to see it less. Burrow Buddy territory.Medically significant âš This animal's venom can need real medical attention. Adults only, a locked escape-proof enclosure, and no free handling, ever.
Buton Black Centipede (Scolopendra sp. 'Buton Black')
Spice 5: Hottest in the houseExperienced keepers only: secure lock-in lids, a real plan, no free handling. Big Z is on the dot if you want yours looked over first.
CB: Captive bredHatched in captivity, not collected from the wild. It has only ever known enclosure life, so it's used to the kind of setup it's heading to.Terrestrial: a ground dwellerLives on the floor. Give it floor space more than height, a hide, and a few inches of substrate. Keep climbs short so a fall stays harmless.Medically significant âš This animal's venom can need real medical attention. Adults only, a locked escape-proof enclosure, and no free handling, ever.
Albino Black Deathstalker Scorpion (Leiurus jordanensis 'Albino')
Spice 5: Hottest in the houseExperienced keepers only: secure lock-in lids, a real plan, no free handling. Big Z is on the dot if you want yours looked over first.
WC: Wild caughtCollected from its natural habitat, then settled in at Big Z's before it ships. Plenty of species, adults especially, are rarely bred in captivity, so wild caught is how they reach the hobby.Terrestrial: a ground dwellerLives on the floor. Give it floor space more than height, a hide, and a few inches of substrate. Keep climbs short so a fall stays harmless.Medically significant âš This animal's venom can need real medical attention. Adults only, a locked escape-proof enclosure, and no free handling, ever.
Spice 5: Hottest in the houseExperienced keepers only: secure lock-in lids, a real plan, no free handling. Big Z is on the dot if you want yours looked over first.
CB: Captive bredHatched in captivity, not collected from the wild. It has only ever known enclosure life, so it's used to the kind of setup it's heading to.Terrestrial: a ground dwellerLives on the floor. Give it floor space more than height, a hide, and a few inches of substrate. Keep climbs short so a fall stays harmless.Medically significant âš This animal's venom can need real medical attention. Adults only, a locked escape-proof enclosure, and no free handling, ever.
Beautiful spider who arrived in excellent condition! My family and I are very happy with the professional and honorable service we received from this business. As such, we would like to recommend them to other potential customers.
Love my grossa! Such a beautiful species, and I have zero complaints about Big Zs tarantulas! They really are one of the best, from packaging to making sure you have everything you need for your new addition, including enclosures and clean up crew. I couldn’t be happier and will definitely be purchasing from again.
Unfortunately arrive dead but was packaged very nicely and seller kindly helped me with what to do next. Unfortunate events mostly due to weather, but otherwise will be buying from again.
d
Green Bottle Blue Tarantula (Chromatopelma cyaneopubescens) d***c
Amazing seller—the best I’ve ever come across on MorphMarket! Big Z goes above and beyond to help you find exactly the animals you’re looking for. The variety of species available is incredible, and it’s clear they genuinely care about their customers and their animals. Shipping is fast, professional, and everything arrives safely packaged. I can’t recommend Big Z highly enough. A true legend in the hobby!
Amazing seller—the best I’ve ever come across on MorphMarket! Big Z goes above and beyond to help you find exactly the animals you’re looking for. The variety of species available is incredible, and it’s clear they genuinely care about their customers and their animals. Shipping is fast, professional, and everything arrives safely packaged. I can’t recommend Big Z highly enough. A true legend in the hobby!
Seller was super happy to communicate with me, and even offered to answer questions I may have in the future. The shipping price was very reasonable for the kind that’s required for these kind of items. Packaging was great; there was a cooling gel and everything else required to keep it safe. Item as described and would do business with them again!
c
Arizona Blonde Tarantula (Aphonopelma chalcodes) EBAY ONLY c***t
Amazing seller—the best I’ve ever come across on MorphMarket! Big Z goes above and beyond to help you find exactly the animals you’re looking for. The variety of species available is incredible, and it’s clear they genuinely care about their customers and their animals. Shipping is fast, professional, and everything arrives safely packaged. I can’t recommend Big Z highly enough. A true legend in the hobby!
c
Vietnamese Vinegaroon (Thelyphonus sp.) c***t
Amazing seller—the best I’ve ever come across on MorphMarket! Big Z goes above and beyond to help you find exactly the animals you’re looking for. The variety of species available is incredible, and it’s clear they genuinely care about their customers and their animals. Shipping is fast, professional, and everything arrives safely packaged. I can’t recommend Big Z highly enough. A true legend in the hobby!
Some really cool spiders shipped safe in sound even in this heat . Very good packaging everybody alive and seem well. Very much worth the price and more.
r
Widow Jumping Spider (Phidippus ardens) r***o
Shipped with care! Received healthy spiders that were packed very professionally and as described!
