Eutorna tricasis
In 3 days ~10% in a week ~20%
Eutorna tricasis is a moth of the family Depressariidae. It is found in Australia, where it has been recorded from the eastern part of the country. The wingspan is 12–16 mm. The forewings are bright ferruginous ochreous, sometimes tinged with brown towards the middle of the costa, the costal edge whitish towards the base and there is a slender whitish median longitudinal streak from the base to two-fifths, edged beneath with blackish except towards the base. There is a fine whitish oblique streak, edged above with some black scales, from one-third of the costa to the upper of two black whitish-circled dots placed transversely in the disc at two-thirds. There is also a fine oblique whitish anteriorly blackish-edged streak from before three-fourths of the costa, not reaching half across the wing. There is also a short white streak from the apex beneath the costa and there are several undefined black marks on the apical portion of the costa and termen. The hindwings are grey, lighter towards the base. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Blue Mountains National Park | 🇦🇺 Australia |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Eutorna tricasis sighting in Blue Mountains National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 681st most-seen of the 789 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.
March and August
In those months about 10% of wildlife watchers report a Eutorna tricasis in Blue Mountains National Park on a given day, against under 5% in April–July and September–February, the lowest months.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Eutorna tricasis sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Blue Mountains National Park, in our data
Blue Mountains National Park is the only park on Wallace's Line with enough records to rate Eutorna tricasis sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Depressariidae
The closest relatives of the Eutorna tricasis that you can see in Blue Mountains National Park (family Depressariidae, Flat-bodied moths) are Agriophara confertella (about 10%), Phylomictis lintearia (about 10%) and Leptosaces schistopa (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Eutorna tricasis is recorded against all the insects logged in Blue Mountains National Park (5 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.
