Acrophylla titan
In 3 days ~20% in a week ~40%
Acrophylla titan, the titan stick insect, is the third-longest stick insect found in Australia. First described by William Sharp Macleay in 1826, it was considered to be the longest stick insect in the world until the discovery of Ctenomorpha gargantua.
It is native to south-east Queensland and New South Wales. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Springbrook National Park | 🇦🇺 Australia | |
| 2 | Blue Mountains National Park | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report a Titan Stick Insect sighting in Blue Mountains National Park on a given day, based on 24 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 174th most-seen of the 789 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
January–May, July and October–November
In those months about 10% of wildlife watchers report a Titan Stick Insect in Blue Mountains National Park on a given day, against under 5% in June, August–September and December, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Titan Stick Insect sightings with a recorded time, and about half of them come between 6 am and 6 pm: it is seen both by day and at night.
Among the best
Of the 2 parks where we can rate Titan Stick Insect sightings, Blue Mountains National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Springbrook National Park (Australia, about 10%).
Same family: Phasmatidae
The closest relatives of the Titan Stick Insect that you can see in Blue Mountains National Park (family Phasmatidae) are Margin-Winged Stick Insect (about 20%), Spur Legged Phasmid (about 10%) and Children’s Stick Insect (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Titan Stick Insect is recorded against all the insects logged in Blue Mountains National Park (24 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.
