Chilobrachys sp. South Thai
South Thailand Blue - complete care guide
South Thailand Blue
Temperature
24-26 °C
Target ambient range
Humidity
80-90 %
Substrate / enclosure RH
Adult DLS
15-17 cm
Average - varies per individual
Moult interval
Sling 3-6w - Juv 1.7-2.8mo
Adult 9-13mo
Adult cycle = mature females; males never moult again after maturity
About
The South Thailand Blue - an undescribed southern Thai Chilobrachys of rock-crevice and cave-mouth habitats (deep shaded holes spun out with heavy silk), explicitly NOT a close relative of the Electric Blue (different spermathecae structure). One of the highest humidity requirements in the genus (80-90 %) and a fast defensive disposition on a 17 cm frame. £25 slings / £55 WC sub-adults.
Husbandry cheat sheet
- Origin
- Thailand (south)
- Habitat
- Rock crevices and shaded cave mouths
- Temperament
- Defensive
- In your collection
- 0
Growth, lifespan & conservation
- Growth rate
- Fast
- Maturity
- ♀ 32mo ♂ 20mo
- Lifespan
- ♀ 12yr ♂ 3yr
- Continent
- Asia
- UK availability
- Uncommon
Care Guide
Chilobrachys sp. South Thai
South Thailand Blue - a complete husbandry sheet. Use as a starting point and adjust to your individual specimen.
What size enclosure does a South Thailand Blue Tarantula need?
Adults
30 × 25 cm footprint with 12 cm of substrate.
Slings & Juveniles
Small tubs with 8 cm of damp substrate and a crevice-style hide.
To map exact floor space and substrate safety limits for your setup, use our free interactive tarantula enclosure planner.
What temperature and humidity does a South Thailand Blue Tarantula need?
Heating
The South Thailand Blues is comfortable at 24-26 °C; UK homes need supplementary warmth for much of the year.
Humidity
80-90 %: the wet end of the genus - damp substrate, frequent light misting, and relentless airflow.
Ventilation
Cross-ventilation with VERY high humidity - the balance is the challenge.
What substrate is best for a South Thailand Blue Tarantula?
Recommended Mixes
Depth
12 cm
Notes
Deep, consistently damp and packable, holding crevice structure.
How do you set up a South Thailand Blue Tarantula enclosure?
Décor
The Hide
A deep shaded retreat between cork and stone, spun out with heavy silk - mimic the cave-mouth crevice.
Water
Shallow dish at surface level.
Lighting
Ambient room light only - keep the retreat shaded.
How often should you feed a South Thailand Blue Tarantula?
Good Feeders
Long refusal worrying you? Separate premoult fasting from genuine problems with our "Is my T okay?" checker.
Is my South Thailand Blue Tarantula dying or moulting?
Pre-moult signs to look for
Refusing food for weeks is normal before a moult - a healthy South Thailand Blue Tarantula fasting is almost never an emergency in itself. Watch for slowing down and spending more time in the hide, laying a thick moult mat of web on the floor. Old World species do not flick urticating hairs, so there is no bald patch to watch - rely on fasting, lethargy and hide time instead.
On its back is MOULTING, not dying
A South Thailand Blue Tarantula lying upside down or on its side with legs curled inwards is almost certainly mid-moult. Do not touch it, do not right it, do not mist it - just remove any live prey (crickets can kill a defenceless moulter) and leave the room.
How long between moults?
For this species, expect a moult roughly every 22-44 days for spiderlings, every 50-85 days for juveniles, and every 120-190 days for sub-adults, with adult females moulting around every 8.7 months (up to 12.7 months at the extreme). Males never moult again after their ultimate (mature) moult.
After the moult: fang hardening time
The new exoskeleton stays soft, with fangs that cannot grip, for roughly 7 days in this species. Offer no food and no handling for about 7 days - feeding too early is how fresh moulters get injured. The shed exuvium is also the best sexing tool there is - see our tarantula sexing guide for what to look for.
Genuinely worried about behaviour that is not moulting? Our "Is my T okay?" triage tool walks the danger signs one by one.
What ongoing care does a South Thailand Blue Tarantula need?
🪞 Moulting
Moults in the silk-lined retreat. Do not disturb; keep prey out and humidity very high; wait until the fangs are black and hard before feeding. Adult intervals apply to mature FEMALES - a mature male never moults again.
🧹 Cleaning
Weekly: refresh the water dish and clear boluses with tongs.
✋ Handling
Never - fast and defensive. Catch cup and lid discipline.
What are the most common mistakes when keeping South Thailand Blue Tarantulas?
✓ What They Love
- VERY high humidity with strong cross-flow
- Rock-crevice style retreats (cork + stone)
- Long tongs and lid discipline
- Anchor points for heavy webbing
- Respect: fast, defensive, potent venom
✕ Common Mistakes
- Letting humidity drop - cave-adapted stock
- Free handling
- Stagnant air
- Expecting visibility
Keep exploring: related care guides
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