Odontoptilum angulata
In 3 days ~30% in a week ~60%
Abaratha angulata, the chestnut angle or banded angle, is a butterfly belonging to the family Hesperiidae and is found in India and southeast Asia. Male and female vinaceous-brown, palest on the hindwing. Male, forewing dull chestnut-brown along exterior margin, with a black transverse band one-third from the base; a geminated semi-transparent spot on costa before the apex, surrounded by suffused black; a semi-transparent lunule and a small spot on the lower part of the disc, bordered without by a black band: hindwing with a transverse subbasal, an elbowed discal, and a lower submarginal purplish-white line; apex of wing with suffused black patch and lower marginal blackish pale-bordered spots. Underside brown, forewing suffused with greyish-white at the base; markings as above: hindwing greyish-white, the transverse lines less defined, marginal spots blacker, and a blackish spot near base of wing. Palpi above black. Palpi and body beneath and legs greyish-white. Female paler, marked on upper-and undersides as in male. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cuc Phuong National Park | 🇻🇳 Vietnam | |
| 2 | Kaeng Krachan National Park | 🇹🇭 Thailand |
With luck
About 10% of wildlife watchers report a Chestnut Angle sighting in Tuen Mun on a given day, based on 37 verified sightings from GBIF citizen-science data. It is the 137th most-seen of the 557 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.
July to September
In those months about 20% of wildlife watchers report a Chestnut Angle in Tuen Mun on a given day, against under 5% in December to February, the lowest months. Those are among Tuen Mun's wettest months, with about 200 mm of rain a month against 20 mm in December.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Chestnut Angle sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 4 cities where we can rate Chestnut Angle sightings, Tuen Mun has the highest daily chance: about 10%. Next come Hong Kong (China, about 10%) and Guangzhou (China, under 5%).
Same family: Hesperiidae
The closest relatives of the Chestnut Angle that you can see in Tuen Mun (family Hesperiidae, Skippers) are Indian Palm Bob (about 20%), Formosan Swift (about 20%) and Grass Demon (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Chestnut Angle is recorded against all the insects logged in Tuen Mun (37 verified sightings), 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.
