Mooreana trichoneura
In 3 days ~20% in a week ~50%
Mooreana trichoneura, the yellow flat, is a butterfly belonging to the family Hesperiidae and subfamily Pyrginae (flats). It has a wingspan of 32–36 mm. Its upperside is dark brown, and the forewing has a number of white hyaline (glass-like) spots and strokes in the outer half of the wing, while the hindwing has a series of black wedge-shaped discal spots and a yellow tornal area. The underside of the hindwing is predominantly yellowish white.
The yellow flat has a wide distribution. It ranges from India to Thailand to Malaysia and can even be found in the Philippines. In 2012, it was discovered in Singapore. The yellow flat is usually found in lowland forests up to 833 m (2500 ft).
Like other butterflies in its subfamily, it flies quickly and usually rests on the underside of a leaf with its wings open flat. Mallotus paniculatus Mooreana trichoneura trichoneura Mooreana trichoneura pralaya (Moore, [1866]) Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Doi Inthanon National Park | 🇹🇭 Thailand |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kuala Lumpur | 🇲🇾 Malaysia |
With luck
About 10% of wildlife watchers report a Yellow Flat sighting in Doi Inthanon National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 131st most-seen of the 153 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
April and August–September
In those months about 20% of wildlife watchers report a Yellow Flat in Doi Inthanon National Park on a given day, against under 5% in June–July and November–March, the lowest months. Those are among Doi Inthanon National Park's wettest months, with about 260 mm of rain a month against 20 mm in February.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Yellow Flat sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Doi Inthanon National Park, in our data
Doi Inthanon National Park is the only park on Wallace's Line with enough records to rate Yellow Flat sightings: about 10% of wildlife watchers there report one on a given day.
Same order: Lepidoptera
The closest relatives of the Yellow Flat that you can see in Doi Inthanon National Park (order Lepidoptera, Butterflies and Moths) are Punchinello (about 40%), Lemon Pansy (about 30%) and Red Lacewing Butterfly (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Yellow Flat is recorded against all the insects logged in Doi Inthanon 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.
