Lethe daretis
In 3 days ~60% in a week ~90%
Lethe daretis, the Sri Lanka treebrown, is a butterfly in the family Nymphalidae. It is endemic and restricted to cloud forests of central highlands of Sri Lanka such as Horton Plains. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Horton Plains National Park | 🇱🇰 Sri Lanka |
More parks will be added in future updates.
Possible
About 30% of wildlife watchers report a Sri Lanka Treebrown sighting in Horton Plains National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 6th most-seen of the 6 insects we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
August
In that month about 50% of wildlife watchers report a Sri Lanka Treebrown in Horton Plains National Park on a given day, against under 5% in March and December–January, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Sri Lanka Treebrown sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Horton Plains National Park, in our data
Horton Plains National Park is the only park on Wallace's Line with enough records to rate Sri Lanka Treebrown sightings: about 30% of wildlife watchers there report one on a given day.
Same family: Nymphalidae
The closest relatives of the Sri Lanka Treebrown that you can see in Horton Plains National Park (family Nymphalidae, Brush-footed Butterflies) are Tropical Fritillary (about 50%) and Indian Red Admiral (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Sri Lanka Treebrown is recorded against all the insects logged in Horton Plains 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.
