Cirrochroa thais
In 3 days ~40% in a week ~70%
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.
Possible
About 20% of wildlife watchers report a Tamil Yeoman sighting in Thrissur on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 68th most-seen of the 93 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
July and November
In those months about 30% of wildlife watchers report a Tamil Yeoman in Thrissur on a given day, against under 5% in August–October and December–April, the lowest months. Those are among Thrissur's wettest months, with about 280 mm of rain a month against 10 mm in January.
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.
Among the best
Of the 6 cities where we can rate Tamil Yeoman sightings, Thrissur ranks 3rd at about 20%, level with the leaders once rounded. The best odds are in Ponnani (India, about 20%) and Kochi (India, about 20%).
Same family: Nymphalidae
The closest relatives of the Tamil Yeoman that you can see in Thrissur (family Nymphalidae, Brush-footed Butterflies) are Chocolate Pansy (about 40%), Tawny Coster (about 40%) and Common Evening Brown (about 30%), 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 Thrissur (6 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.
