Meet the animal
Extatosoma tiaratum is an Australian phasmid, often called a spiny leaf insect. It is not a true leaf insect. PSG describes females around 12 cm and slimmer males around 9 cm. Males have developed wings and may fly; newly hatched nymphs resemble ants.
Before you choose one
Arrange year-round food foliage, adult housing space and a secure plan for any eggs. Females can produce viable eggs without mating. Lifespan wording in the care sources does not clearly separate total life from adulthood, so ask for stage and moult history rather than relying on a precise month count.
Set up its home
AES recommends at least three body lengths of clear height. A 27 cm box cannot provide that drop for a 12 cm female after furnishing. Choose larger housing with stable grip, clear moult zones and hatchling-safe ventilation. Block access to the water supporting food stems.
Temperature and safe heating
PSG describes room-temperature culture and warns against excessive warmth. No exact optimum is established here. Measure the enclosure and avoid direct sun or uncontrolled heaters; speeding growth is not a care goal.
Daylight, shade and UV
Use a normal day-night cycle with sheltered foliage. No species-specific UVB prescription is established in the reviewed guidance. Observation lamps should not overheat or dry the enclosure.
Water, moisture and airflow
Mist foliage for drinking opportunities, maintaining airflow and drying between wettings. Do not seal a permanently wet container. Check tiny nymphs and stem-water security particularly carefully.
Food and nutrition
Offer fresh, correctly identified pesticide-free foliage continuously. Eucalyptus is associated with its natural diet; culture records also list bramble, oak, rose and raspberry. Confirm acceptance for your culture and check that hatchlings actually eat. Inspect old stems carefully before discarding them.
Behaviour and handling
Do not handle during a moult or before the new body hardens. Move the occupied twig or encourage voluntary walking without pulling feet free. Spines can pinch and a male may fly. Keep transfers contained and avoid provoking reported defensive spray, especially near eyes.
Health and life stages
Repeated falls, injury or failed moulting need experienced invertebrate or veterinary advice. Do not pull off old skin. Eggs may remain dormant for a long time; absence of quick hatching does not justify disposing of them outdoors.
Buying and keeping records
Confirm scientific identity and current import conditions before buying from abroad. Keep insects, eggs and waste contained and obtain species-specific surplus-management advice. Never release animals or scatter eggs in compost.
Your care routine
Before arrival, prepare adult clearance, browse through winter and an egg plan. Check food, grip and ventilation regularly. Remove frass and decaying leaves and renew stem water. Inspect cleaning waste for eggs and small insects without disturbing moulting animals.
YOUR CHECKLIST
0 of 8 ticked
Giant prickly stick insect — Extatosoma tiaratum
Care hub: wildformexotics.co.uk/animals/giant-prickly-stick-insect/
Ticks are kept only while this page is open. Print or download a copy before leaving. Completing the checklist does not establish that an animal is well or an installation is safe.
Use these reminders alongside the full guide. Adjust feeding and maintenance to your animal’s condition and measured enclosure conditions.
Sources
- PSG culture 9: Extatosoma tiaratum (Phasmid Study Group)
- Care of stick insects (Australian Museum)
- PSG 9 care information (Phasmid Study Group)
- Stick insect caresheet (Amateur Entomologists' Society)
- Import of pet invertebrates, amphibians and reptiles: IIN (GOV.UK / APHA and Defra)
- Guidance on section 14 of the Wildlife and Countryside Act (GOV.UK / Defra)
- Import or export endangered species: check if you need a CITES permit (GOV.UK / APHA and Defra)
Equipment checklist
Equipment examples for Giant prickly stick insect, grouped by care need. Read the checks before choosing. Shop links are Amazon affiliate links. Items without a verified Amazon match have no shop link.
Plan the whole setup: These examples cover only part of the setup. Meet every care need and test the finished enclosure before arrival. Suitable equipment you already own may meet the need; optional tools are labelled.
Check each item for your animal’s size and life stage, safe access, compatible controls and measured conditions. The list does not certify an installation.
Contained habitat
Essential care need
Secure ventilation and gaps smaller than the animal or nymph
Plan first: Check escape points and whether the animal needs height, floor area or substrate depth.
Alternative equipment
Exo Terra Pro Paludarium 45 × 45 × 90 cm
PT4406; nominal external 45 × 45 × 90 cm; front-opening glass, adjustable ventilation, lockable stainless-steel mesh top.
External dimensions are not usable internal space. Check actual individual size, access, secure gaps, load support, furnishing clearance and any substrate depth before choosing this example. Measure at least three adult body lengths of unobstructed hanging space below the actual grip, after substrate and food stems; fit secure stage-appropriate roof grip.
Measure the finished usable floor and height after substrate and furnishings against this guide. Check doors, vents and cable gaps for the actual animal and life stage. Secure the lid, test airflow and temperature, and keep lamps inaccessible. For terrestrial layouts retain the land floor; close and secure any drain rather than adding a water pool. Provide secure stage-appropriate overhead grip and measure the unobstructed drop beneath it: at least four actual body lengths for mantises or three adult body lengths for stick/leaf insects. Include soil depth, food stems and protected water vessels in that measurement; choose a larger enclosure if it fails. Very small nymphs may need a separate fine-gap nursery and accessible prey.
Moisture and monitoring
Essential care need
A species-specific damp refuge or drinking access with airflow
Plan first: Check the places your animal uses and how they dry between wettings. A single humidity reading cannot describe the whole enclosure.
Alternative equipment
Exo Terra Mini Mister — 0.5 L
PT2489; 0.5 L hand spray bottle. The Amazon title uses 16 US fluid ounces; this is not the conflicting 1.5/2 L pressure sprayer.
Use an existing suitable fine sprayer if you have one. Follow the individual wet-dry cycle; do not spray the animal, soak every surface or substitute misting for drinking water.
A manual misting tool only where the individual care plan calls for it. Use clean water, keep the bottle hygienic and free of chemicals, and do not spray directly at the animal. Check substrate/refuge moisture and drying/airflow rather than misting to a universal schedule.
Exo Terra Digital Thermometer
Model: PT2472
Measure air temperature at animal height. Take independent warm and cool readings where the care plan needs a gradient.
Fit check: The remote probe measures air at one location. Keep it away from direct lamp heat, secure it safely and keep the display outside. Use separate probes for warm and cool areas where needed. Minimum/maximum readings help track changes; this device does not measure surfaces or control heating. Use a water-rated thermometer for submerged readings.
Food and maintenance
Essential care need
Clean continuing food supply and a way to remove spoilage
Plan first: Select tools and food for the exact species and life stage; do not substitute generic reptile supplements.
Also plan for: Offer fresh, correctly identified pesticide-free foliage continuously.
Moulting structure
Essential care need
Overhead grip and clear space below at least several body lengths
Plan first: Keep food plants and prey from blocking a hanging moult; screen any open water vessel.
Exo Terra Jungle Vines Large
Model: PT3086
Add climbing stems leading to a separately fitted grippable moult ceiling.
Fit check: PT3086 is about 182 cm long and 1.5 cm across. Check that the animal can grip it, secure it against movement and avoid trapping gaps or unsafe falls. Add broad resting cover where needed. It cannot replace food stems or a secure ceiling grip for moulting.
Also plan for: Fit a secure grippable overhead surface and measure the free drop below it. The climbing vine alone does not complete the moulting structure.
Fresh browse supply
Essential care need
Identified pesticide-free bramble and verified alternative plants
Plan first: Hydrate cut stems in a covered vessel and remove wilted or contaminated leaves.
Also plan for: Maintain correctly identified, pesticide-free fresh browse accepted by the culture. The climbing vine above is not food.
Egg containment
Essential care need
Labelled secure egg collection and containment vessels
Plan first: Plan for delayed hatchlings and safe egg disposition before acquiring adults.
Also plan for: Prepare labelled, secure containers for eggs and plan how to keep, rehome or safely dispose of them. A retail box alone does not establish a safe method.