Animal Care Guide

Giant Spiny Stick Insect

Extatosoma tiaratum
A big, dramatic Australian stick insect that curls its abdomen like a scorpion when threatened β€” impressive, gentle and one of the best large stick insects to handle.
🟒 Spectacular & handleable🌿 HerbivoreπŸ¦‚ Scorpion-mimic pose⏳ ~1–1.5 years
Care difficulty
Easy–Moderate
Animal cost
Β£5–£15 each
Full setup
Β£40–£150
Adult size
Females 12–20 cm
Lifespan
~1–1.5 years
Min. enclosure
Tall mesh 40Γ—40Γ—60 cm+

πŸ“‹At a Glance

Also called the giant prickly or Macleay's spectre, this large Australian stick insect is a superb leaf-and-lichen mimic. Females are big, spiny and heavy-bodied; when alarmed they curl the abdomen up over the back in a scorpion-like bluff (they're harmless). Hardy and gentle, they're one of the most impressive and handleable stick insects.

Best for: keepers wanting a large, spectacular, gentle, handleable stick insect.

πŸ’·Costs & Getting Hold of One

The animal
Β£5–£15 each (nymphs); nice as a small group.
Full setup
Β£40–£150 (a tall mesh enclosure).
Ongoing costs
Very low β€” foliage (bramble/eucalyptus).
Availability
Fairly easy; commonly bred.
These are minimums, not budgets. The low end still has to meet the animal's needs β€” proper UVB, a heat gradient, space and filtration are not optional extras. A vivarium alone can cost £250–£300+, and a tortoise's UVB lamp alone is often ~£100. Price the whole setup before you commit to the animal.
Buying tip: A group is engaging. Females are the big spiny ones; males are slimmer and can fly.

🏠Enclosure & Where to Keep It

A tall, airy (mesh) enclosure β€” height is essential for these large insects to moult.

Group
A tall mesh enclosure from 40Γ—40Γ—60 cm.
Height
Ample height to hang and moult (they're big β€” need real clearance).
Furnishing
A pot of fresh foodplant standing in water (block the top).
Where to keep it
Room temperature, out of direct sun.
These are large insects β€” give generous height, or moults fail and legs/bodies deform.

🌑️Temperature, Lighting & Humidity

Temperature
Room temperature 20–26 Β°C.
Lighting / UVB
Normal room light.
Humidity
Light daily misting; a touch more humid than Indian sticks.

Bedding / substrate

A little substrate/kitchen paper to catch droppings and eggs.

🍽️Diet, Supplements & Feeding

A herbivore β€” fresh leaves.

Staple
Bramble (blackberry), eucalyptus, oak and rose.
Freshness
Keep fresh foliage in water; replace as it wilts.
Frequency
Constant access to fresh leaves.
Water
Daily misting for droplets to drink.
Wash foliage and avoid pesticides. Bramble is the reliable year-round staple in the UK.

✨Grooming, Shedding & Additional Needs

No grooming; they moult by hanging β€” height and humidity make moults succeed.

πŸ–οΈHandling & Interaction

Gentle and slow, and one of the best large stick insects to handle β€” the scorpion pose is pure bluff. Delicate, though, so let them walk rather than gripping.

How to handle

Let the insect walk onto your hand; never pull it off a surface. Support the large body gently and stay low.

βœ… Do

  • Let it walk onto your hand.
  • Support the big body gently, low over a surface.
  • Supervise children.
  • Keep foliage fresh and the enclosure tall.
  • Wash hands after handling.

β›” Don't

  • Don't pull it off a surface (legs shed).
  • Don't grip or squeeze.
  • Don't use pesticide-sprayed foliage.
  • Don't keep the enclosure short.
  • Don't be alarmed by the scorpion bluff β€” it's harmless.

🦎Fun Facts

⭐Overall Verdict

A large, spectacular, gentle stick insect that's a joy to keep and handle β€” the scorpion pose is all show. Give it height and fresh bramble, handle it gently, and it's one of the most impressive beginner-friendly invertebrates.