Biston bengaliaria
In 3 days ~30% in a week ~50%
Biston bengaliaria is a moth of the family Geometridae. It is found in China (Yunnan, Tibet), India, Bengal and Thailand. 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 Biston bengaliaria sighting in Khao Yai National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 115th 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 50%, if each day is a fresh chance.
July
In that month about 30% of wildlife watchers report a Biston bengaliaria in Khao Yai National Park on a given day, against under 5% in April–June and September–February, the lowest months. That is one of Khao Yai National Park's wettest months, with about 270 mm of rain against 15 mm in December.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Biston bengaliaria sightings with a recorded time, and nearly all 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 Biston bengaliaria sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Geometridae
The closest relatives of the Biston bengaliaria that you can see in Khao Yai National Park (family Geometridae, Geometer Moths) are Clara's Swallowtailed Moth (about 10%), Chorodna metaphaearia (about 10%) and Milionia basalis (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Biston bengaliaria is recorded against all the insects logged in Khao Yai National Park (8 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.
