Extatosoma tiaratum
In 3 days ~20% in a week ~50%
Extatosoma tiaratum, commonly known as the spiny leaf insect, the Australian giant prickly stick insect, Macleay's spectre, or the Australian walking stick, is a large species of Australian stick insect. E. tiaratum is endemic to rainforests in Australia, with most of its range in eastern New South Wales and eastern Queensland, but it is also found in eastern Victoria (one old record) and South Australia (possibly introduced). The closely related and similar E. popa is from New Guinea.
Female adult E. tiaratum are covered with thornlike spikes for defense and camouflage. Their long, rounded bodies grow to about 20 cm (8 in) long. The females are further described as "heavy-bodied, brachypterous and having numerous spines and integumental expansions on the face and legs, including a tuft of spines on the conical occiput of the hypognathous head". As mentioned, the wings of the female are too small for flying, regardless of her being gravid.
Exhibiting the sexual dimorphism of many similar insects (particularly other phasmids as well as mantises), males are small and thinner, growing only about 11 cm (4.5 in) in length and have three ocelli. Males lack the... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Daintree National Park | 🇦🇺 Australia | |
| 2 | Lamington National Park | 🇦🇺 Australia | |
| 3 | Springbrook National Park | 🇦🇺 Australia | |
| 4 | Blue Mountains National Park | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report a Spiny Leaf Insect sighting in Springbrook National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 180th most-seen of the 429 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
March
In that month about 20% of wildlife watchers report a Spiny Leaf Insect in Springbrook National Park on a given day, against under 5% in May to November, the lowest months. That is one of Springbrook National Park's wettest months, with about 190 mm of rain against 45 mm in August.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Spiny Leaf Insect sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
3rd of 4
Of the 4 parks where we can rate Spiny Leaf Insect sightings, Springbrook National Park ranks 3rd at about 10%. The best odds are in Daintree National Park (Australia, about 30%) and Lamington National Park (Australia, about 10%).
Same family: Phasmatidae
The closest relatives of the Spiny Leaf Insect that you can see in Springbrook National Park (family Phasmatidae) are Tessellated Stick Insect (about 20%), Margin-Winged Stick Insect (about 10%) and Red-Winged Stick Insect (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Spiny Leaf Insect is recorded against all the insects logged in Springbrook National Park (10 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
