Gastrophora henricaria
In 3 days ~10% in a week ~20%
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 |
Rare
Under 5% of wildlife watchers report a Fallen Bark Looper sighting in Melbourne on a given day, based on 30 verified sightings from GBIF citizen-science data. It is the 353rd most-seen of the 875 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
December
In that month about 10% of wildlife watchers report a Fallen Bark Looper in Melbourne on a given day, against under 5% in January to November, 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.
2nd of 3
Of the 3 cities where we can rate Fallen Bark Looper sightings, Melbourne ranks 2nd at under 5%. The best odds are in Brisbane (Australia, about 10%).
Same family: Geometridae
The closest relatives of the Fallen Bark Looper that you can see in Melbourne (family Geometridae, Geometer Moths) are Apple Looper (about 20%), Plantain Moth (about 20%) and Red-Lined Looper (about 10%), 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 Melbourne (30 verified sightings), 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.
