Cirrochroa thais
In 3 days ~80% in a week >90%
Cirrochroa thais, also known as the Tamil yeoman, is a butterfly species of the nymphalidae family found in South India and Sri Lanka. It was first described under the scientific name Papilio thais by Danish zoologist Johann Christian Fabricius in 1787.
The butterfly has bright reddish yellow coloured wings measuring up to 60 to 75 mm (2.4 to 3.0 in). The wings are paler on the underside and feature a white spot in the middle. The wing tips are black and there are several small black spots on the wings. The The females have similar markings but are slightly paler in colour than the males.
In 2019, it was declared as the state butterfly of the Indian state of Tamil Nadu. The butterfly was first described under the name Papilio thais by Danish zoologist Johann Christian Fabricius in the Mantissa Insectorum in 1787. Jean-Baptiste Godart described it as Argynnis thea in the Encyclopédie Méthodique in 1819. It was moved to the genus Cirrochroa after Edward Doubleday established the new genus Cirrochroa in the The Genera of Diurnal Lepidoptera in 1847. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Periyar National Park | 🇮🇳 India |
More parks will be added in future updates.
Likely
About 40% of wildlife watchers report a Tamil Yeoman sighting in Periyar National Park on a given day, based on 20 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 2nd most-seen of the 44 insects we can rate there. Over three days the chance rises to about 80%, and over a week to over 90%, if each day is a fresh chance.
November
In that month about 70% of wildlife watchers report a Tamil Yeoman in Periyar National Park on a given day, against under 5% in October, the lowest month.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Tamil Yeoman sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Periyar National Park, in our data
Periyar National Park is the only park on Wallace's Line with enough records to rate Tamil Yeoman sightings: about 40% of wildlife watchers there report one on a given day.
Same family: Nymphalidae
The closest relatives of the Tamil Yeoman that you can see in Periyar National Park (family Nymphalidae, Brush-footed Butterflies) are Glad-Eye Bushbrown (about 40%), Chocolate Pansy (about 40%) and Rustic (about 40%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Tamil Yeoman is recorded against all the insects logged in Periyar National Park (20 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.
