Loxura atymnus
In 3 days ~20% in a week ~50%
Loxura atymnus, the yamfly, is a species of lycaenid or blue butterfly found in Asia. Male. Uppersicle bright fulvous. Forewing with the apical margin from the middle of the costa increasingly black, and continued down the outer margin, gradually decreasing in width, the inner margin of the black band being in an almost continuous curve. Hindwing with a very narrow, pale ochreous-brown band on the outer margin, some suffusion of this colour being at the base of both wings and continued down the hindwing (the abdominal fold being similarly coloured) and to the end of the tail. Underside dark ochreous-yellow, markings pale blackish. Forewing with two conjoined ring-spots across the middle of the cell, and two similar spots across the end, both somewhat indistinct, the latter with, sometimes, an indistinct spot alcove it, near the costa, a discal, nearly straight band of conjoined ring-spots, the middle one double, the series ending in two black marks in the interno-median interspace, a very indistinct series of sub-marginal lunules. Hindwing with two sub-basal ring-spots, two in the cell and two at the end, all very indistinct; a discal band, slightly inwardly curved... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Yai National Park | 🇹🇭 Thailand | |
| 2 | Kaeng Krachan National Park | 🇹🇭 Thailand |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Chattogram | 🇧🇩 Bangladesh | |
| 2 | Kozhikode | 🇮🇳 India | |
| 3 | Thrissur | 🇮🇳 India | |
| 4 | Guwahati | 🇮🇳 India | |
| 5 | Dehradun | 🇮🇳 India | |
| 6 | Singapore | 🇸🇬 Singapore | |
| 7 | Kuala Lumpur | 🇲🇾 Malaysia | |
| 8 | Jakarta | 🇮🇩 Indonesia | |
| 9 | Kochi | 🇮🇳 India | |
| 10 | Mumbai | 🇮🇳 India |
With luck
About 10% of wildlife watchers report a Common Yamfly sighting in Kaeng Krachan National Park on a given day, based on 11 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 138th most-seen of the 296 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
September
In that month about 30% of wildlife watchers report a Common Yamfly in Kaeng Krachan National Park on a given day, against under 5% in April and October–January, the lowest months. That is one of Kaeng Krachan National Park's wettest months, with about 260 mm of rain against 30 mm in December.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Common Yamfly sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 2 parks where we can rate Common Yamfly sightings, Kaeng Krachan National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Khao Yai National Park (Thailand, about 10%).
Same family: Lycaenidae
The closest relatives of the Common Yamfly that you can see in Kaeng Krachan National Park (family Lycaenidae, Gossamer-winged Butterflies) are Straight Pierrot (about 20%), Common Pierrot (about 20%) and Common Hedge Blue (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Common Yamfly is recorded against all the insects logged in Kaeng Krachan National Park (11 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.
