Gastrophora henricaria
In 3 days ~30% in a week ~50%
Gastrophora is a monotypic moth genus in the family Geometridae. Its only species, Gastrophora henricaria, the fallen bark looper or beautiful leaf moth, is found in the south-east corner of Australia. Both the genus and species were first described by Achille Guenée in 1857.
The wingspan is about 50 mm. The larvae feed on Eucalyptus species and Lophostemon confertus. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kosciuszko National Park | 🇦🇺 Australia | |
| 2 | Blue Mountains National Park | 🇦🇺 Australia | |
| 3 | Lamington National Park | 🇦🇺 Australia | |
| 4 | Great Otway National Park | 🇦🇺 Australia | |
| 5 | Springbrook National Park | 🇦🇺 Australia | |
| 6 | Royal National Park | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report a Fallen Bark Looper sighting in Great Otway National Park on a given day, based on 23 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 83rd most-seen of the 418 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
December
In that month about 30% of wildlife watchers report a Fallen Bark Looper in Great Otway National Park on a given day, against under 5% in February to September, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Fallen Bark Looper 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.
4th of 6
Of the 6 parks where we can rate Fallen Bark Looper sightings, Great Otway National Park ranks 4th at about 10%. The best odds are in Kosciuszko National Park (Australia, about 20%), Blue Mountains National Park (Australia, about 10%) and Lamington National Park (Australia, about 10%).
Same family: Geometridae
The closest relatives of the Fallen Bark Looper that you can see in Great Otway National Park (family Geometridae, Geometer Moths) are Australian Pug Moth (about 20%), Varied Grey Moth (about 20%) and Plantain Moth (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Fallen Bark Looper is recorded against all the insects logged in Great Otway National Park (23 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.
