Aridaeus thoracicus
In 3 days ~10% in a week ~30%
Aridaeus thoracicus, the tiger longicorn, is a common beetle found in Australia. It has also been introduced to New Zealand. An attractively marked insect with orange and black patterns, the femur of each leg is swollen in the middle. Orange hairs may be noticed on the legs and thorax. It was described by Anglo-Irish naturalist Edward Donovan in 1805.
In the warmer months, adults are seen on flowering plants, feeding on the pollen and nectar, particularly those in the myrtle family. Larvae feed on dead wood of a variety of trees. Hosts include Avicennia marina and species in the genus Eucalyptus. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Blue Mountains National Park | 🇦🇺 Australia |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Tiger Longhorn sighting in Blue Mountains National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 456th most-seen of the 789 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
February and November–December
In those months about 10% of wildlife watchers report a Tiger Longhorn in Blue Mountains National Park on a given day, against under 5% in January and March–October, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Tiger Longhorn sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Blue Mountains National Park, in our data
Blue Mountains National Park is the only park on Wallace's Line with enough records to rate Tiger Longhorn sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Tiger Longhorn is recorded against all the insects logged in Blue Mountains National Park (8 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.
