Crypsiphona ocultaria
In 3 days ~30% in a week ~60%
Crypsiphona ocultaria (erroneously as: Phalaena occultaria Guenée, 1857) the red-lined looper moth or red-lined geometer, is a moth of the family Geometridae. The species was first described by Edward Donovan in 1805 and it is found in Australia.
It is one of the most common moths found in Australia. The "red-lined" part of the name refers to the red markings seen on the undersides of the wings. The moth has a wingspan of 4-5 cm. Both sexes of the moth are similar in appearance. When threatened the grub stands still, pretending to be a stick.
As larvae it is a bluish-green with an off-white line on its sides. The larvae feed on eucalypt leaves. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Hattah-Kulkyne National Park | 🇦🇺 Australia | |
| 2 | Great Otway National Park | 🇦🇺 Australia | |
| 3 | Booderee National Park | 🇦🇺 Australia | |
| 4 | Blue Mountains National Park | 🇦🇺 Australia | |
| 5 | Grampians National Park | 🇦🇺 Australia | |
| 6 | Lamington National Park | 🇦🇺 Australia | |
| 7 | Springbrook National Park | 🇦🇺 Australia | |
| 8 | Royal National Park | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report a Red-Lined Looper sighting in Blue Mountains National Park on a given day, based on 49 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 52nd most-seen of the 789 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
May, September and November
In those months about 20% of wildlife watchers report a Red-Lined Looper in Blue Mountains National Park on a given day, against under 5% in June to August, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Red-Lined Looper 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.
4th of 8
Of the 8 parks where we can rate Red-Lined Looper sightings, Blue Mountains National Park ranks 4th at about 10%. The best odds are in Hattah-Kulkyne National Park (Australia, about 20%), Great Otway National Park (Australia, about 10%) and Booderee National Park (Australia, about 10%).
Same family: Geometridae
The closest relatives of the Red-Lined Looper that you can see in Blue Mountains National Park (family Geometridae, Geometer Moths) are Apple Looper (about 20%), Black Geometrid (about 10%) and Plantain Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Red-Lined Looper is recorded against all the insects logged in Blue Mountains National Park (49 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.
