Iambrix salsala
In 3 days ~50% in a week ~80%
Iambrix salsala, the chestnut bob, is a butterfly belonging to the family Hesperiidae, that is found in parts of South Asia and Southeast Asia. The subspecies of Iambrix salsala found in India are- Iambrix salsala salsala Moore, 1865
Iambrix salsala luteipalpis Plötz, 1886 The butterfly occurs in Sri Lanka, India, Nepal, Myanmar, Thailand, Cambodia, Laos, north Vietnam, Hainan, Hong Kong, south Yunnan, Langkawi, Malaysia, Singapore, Tioman, Sumatra and Java.
In India, the butterfly flies in South India, Calcutta, along the Himalayas from Kumaon to Sikkim, Assam and eastwards to Myanmar. Edward Yerbury Watson (1891) states the butterfly's range as follows: Has been recorded from Bengal (Moore), Cachar (Wood-Mason and de Niceville); Tavoy (Elwes and de Niceville); Calcutta (de Niceville); Orissa (Taylor); Sikkim (de Niceville; Elwes).
Recorded as A. stellifer from Ceylon (Hutchison, Wade, Mackwood); Poona, Bombay (Swinhoe); and the Nilgiris (Hampson). Watson (1891) gives a detailed description, shown below: Male and female dark brown with olive-brown gloss. Male; upperside, forewing with two or three ill-defined yellowish spots ascending... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Namdapha National Park | 🇮🇳 India | |
| 2 | Periyar National Park | 🇮🇳 India | |
| 3 | Nagarhole National Park | 🇮🇳 India | |
| 4 | Sinharaja Forest Reserve | 🇱🇰 Sri Lanka | |
| 5 | Kaeng Krachan National Park | 🇹🇭 Thailand |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Thiruvananthapuram | 🇮🇳 India | |
| 2 | Kozhikode | 🇮🇳 India | |
| 3 | Chattogram | 🇧🇩 Bangladesh | |
| 4 | Kochi | 🇮🇳 India | |
| 5 | Ponnani | 🇮🇳 India | |
| 6 | Singapore | 🇸🇬 Singapore | |
| 7 | Thrissur | 🇮🇳 India | |
| 8 | Kollam | 🇮🇳 India | |
| 9 | Kuala Lumpur | 🇲🇾 Malaysia | |
| 10 | Colombo [Sri Jayawardenepura Kotte] | 🇱🇰 Sri Lanka |
Possible
About 20% of wildlife watchers report a Chestnut Bob sighting in Periyar National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 25th most-seen of the 44 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
November
In that month about 50% of wildlife watchers report a Chestnut Bob in Periyar National Park on a given day, against under 5% in April–June, September and December–February, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Chestnut Bob sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 5
Of the 5 parks where we can rate Chestnut Bob sightings, Periyar National Park ranks 2nd at about 20%. The best odds are in Namdapha National Park (India, about 40%).
Same order: Lepidoptera
The closest relatives of the Chestnut Bob that you can see in Periyar National Park (order Lepidoptera, Butterflies and Moths) are Marbled White Moth (about 50%), Tamil Yeoman (about 40%) and Glad-Eye Bushbrown (about 40%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Chestnut Bob is recorded against all the insects logged in Periyar National Park (7 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.
