Thyas coronata
In 3 days ~30% in a week ~60%
Thyas coronata is a species of moth of the family Erebidae first described by Johan Christian Fabricius in 1775. It is found from the Indo-Australian tropics of southern China, Taiwan, Japan, Nepal, India, Sri Lanka to Micronesia and the Society Islands. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Yai National Park | 🇹🇭 Thailand |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Yellow Underwing sighting in Khao Yai National Park on a given day, based on 14 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 64th most-seen of the 221 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.
August
In that month about 40% of wildlife watchers report a Yellow Underwing in Khao Yai National Park on a given day, against under 5% in February–April and October–December, the lowest months. That is one of Khao Yai National Park's wettest months, with about 260 mm of rain against 15 mm in December.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Yellow Underwing sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Khao Yai National Park, in our data
Khao Yai National Park is the only park on Wallace's Line with enough records to rate Yellow Underwing sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Erebidae
The closest relatives of the Yellow Underwing that you can see in Khao Yai National Park (family Erebidae, Underwing, Tiger, Tussock, and Allied Moths) are Lymantria bivittata (about 20%), Cyana bellissima (about 10%) and Cyana dudgeoni (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Yellow Underwing is recorded against all the insects logged in Khao Yai National Park (14 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.
