Crypsiphona ocultaria
In 3 days ~40% in a week ~70%
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 Great Otway National Park on a given day, based on 42 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 29th most-seen of the 418 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
October
In that month about 30% of wildlife watchers report a Red-Lined Looper in Great Otway National Park on a given day, against under 5% in June and August, the lowest months. That is one of Great Otway National Park's wettest months, with about 110 mm of rain against 40 mm in February.
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.
2nd of 8
Of the 8 parks where we can rate Red-Lined Looper sightings, Great Otway National Park ranks 2nd at about 10%. The best odds are in Hattah-Kulkyne National Park (Australia, about 20%).
Same family: Geometridae
The closest relatives of the Red-Lined 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 Red-Lined Looper is recorded against all the insects logged in Great Otway National Park (42 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.
