Euthalia aconthea
In 3 days ~10% in a week ~30%
Euthalia aconthea, the common baron, often called simply baron, is a medium-sized nymphalid butterfly native to Sri Lanka, India and southeast Asia. It flies with stiff wing beats and often glides. The wing is not flapped very far below the horizontal.
The male is brown with slight traces of olive. The forewing has two transverse short black lines at the base, a black loop across the middle, and another beyond the apex of the cell, with their centres dark brown, followed by an angulated discal dark brown band bordered outwardly by a series of five white spots; two preapical white spots beyond and a broad, somewhat diffuse, subterminal black band broadening over the apex and angulated inwards in interspace 1. Hindwing shaded with dark brown at base, two crescent-shaped dark brown loop-like marks in cell; a discal series of dark brown, elongate, outwardly acute, inwardly diffuse, somewhat hastate (spear-shaped) spots, followed by a subterminal series of small spots of the same colour. Underside ochraceous brown. Forewing on the underside shows five transverse slender black lines across cell; a black spot below median vein; discal and preapical white spots as on the... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kalyan-Dombivli | 🇮🇳 India | |
| 2 | Jabalpur | 🇮🇳 India | |
| 3 | Dhaka | 🇧🇩 Bangladesh | |
| 4 | Bengaluru | 🇮🇳 India | |
| 5 | Ponnani | 🇮🇳 India | |
| 6 | Pune | 🇮🇳 India | |
| 7 | Mumbai | 🇮🇳 India | |
| 8 | Kozhikode | 🇮🇳 India | |
| 9 | Chandigarh | 🇮🇳 India | |
| 10 | Chattogram | 🇧🇩 Bangladesh |
Rare
Under 5% of wildlife watchers report a Common Baron sighting in Bangkok on a given day, based on 12 verified sightings from GBIF citizen-science data. It is the 127th most-seen of the 245 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
May, September and November–December
In those months about 10% of wildlife watchers report a Common Baron in Bangkok on a given day, against under 5% in January–April, June–August and October, the lowest months.
33rd of 33
Of the 33 cities where we can rate Common Baron sightings, Bangkok ranks 33rd at under 5%. The best odds are in Kalyan-Dombivli (India, about 30%), Jabalpur (India, about 30%) and Dhaka (Bangladesh, about 30%).
Same family: Nymphalidae
The closest relatives of the Common Baron that you can see in Bangkok (family Nymphalidae, Brush-footed Butterflies) are Plain Tiger Butterfly (about 20%), Common Tiger Butterfly (about 20%) and Lemon Pansy (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Common Baron is recorded against all the insects logged in Bangkok (12 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.
