Palaeosia bicosta
In 3 days ~20% in a week ~40%
Palaeosia is a monotypic genus of moths in the family Erebidae erected by George Hampson in 1900. Its only species, Palaeosia bicosta, the two-ribbed arctiid or two-ribbed footman, was first described by Francis Walker in 1854. It is found in south-eastern Australia.
The wingspan is about 30 mm. The larvae feed on lichen. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Blue Mountains National Park | 🇦🇺 Australia | |
| 2 | Great Otway National Park | 🇦🇺 Australia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Melbourne | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report a Two-Ribbed Footman sighting in Blue Mountains National Park on a given day, based on 16 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 272nd most-seen of the 789 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
February–May and August–December
In those months about 10% of wildlife watchers report a Two-Ribbed Footman in Blue Mountains National Park on a given day, against under 5% in January and June–July, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Two-Ribbed Footman sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Two-Ribbed Footman sightings, Blue Mountains National Park has the highest daily chance: about 10%. Next come Great Otway National Park (Australia, about 10%).
Same family: Erebidae
The closest relatives of the Two-Ribbed Footman that you can see in Blue Mountains National Park (family Erebidae, Underwing, Tiger, Tussock, and Allied Moths) are Light Ermine Moth (about 10%), Bird Dropping Lichen Moth (about 10%) and Tigrioides alterna (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Two-Ribbed Footman is recorded against all the insects logged in Blue Mountains National Park (16 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.
