Argynnis hyperbius
In 3 days ~80% in a week >90%
The Indian fritillary (Argynnis hyperbius) is a species of butterfly of the nymphalid or brush-footed family. It is usually found from northeast, south and southeast Asia to Australia. Male: Upperside: forewing rich orange yellow, hindwing paler yellow, with the following black markings: Forewing: cell with a basal short transverse streak, a medial broad oval loop, its outer margin sinuous; a broad transverse streak beyond cell not reaching the median nervure; a broad streak along the discocellulars; a zigzag discal series of large spots, angulated outwardly in interspace 4, inwardly in interspace 2, a minute spot at base of interspace 1; a somewhat diffuse large postdiscal spot below the costa in interspace 6; a postdiscal sinuous series of round spots, those in interspaces 1 and 4 very small; an inner complete subterminal sinuous series of round spots; an outer subterminal line, widening on the veins, and a terminal slender line. Hindwing: a basal, transverse, obscure narrow mark in cell, another above it in interspace 7, a transverse lunule across the middle of the cell; a small spot outwardly bordering the lower discocellular; a discal series of transverse spots... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Horton Plains National Park | 🇱🇰 Sri Lanka | |
| 2 | Cuc Phuong National Park | 🇻🇳 Vietnam | |
| 3 | Nikko National Park | 🇯🇵 Japan | |
| 4 | Taroko National Park | 🇹🇼 Taiwan | |
| 5 | Doi Inthanon National Park | 🇹🇭 Thailand |
Likely
About 40% of wildlife watchers report a Tropical Fritillary sighting in Changzhou on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 2nd most-seen of the 12 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.
September
In that month about 70% of wildlife watchers report a Tropical Fritillary in Changzhou on a given day, against under 5% in May and July, the lowest months. November and December have too few records to rate.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Tropical Fritillary sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
5th of 28
Of the 28 cities where we can rate Tropical Fritillary sightings, Changzhou ranks 5th at about 40%. The best odds are in Gwangju (South Korea, about 50%), Naha (Japan, about 40%) and Daejeon (South Korea, about 40%).
Same family: Nymphalidae
The closest relatives of the Tropical Fritillary that you can see in Changzhou (family Nymphalidae, Brush-footed Butterflies) are Red Ring Skirt (about 40%), Asian Comma (about 30%) and Five-Dot Sergeant (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Tropical Fritillary is recorded against all the insects logged in Changzhou (10 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.
