Euphaea masoni
In 3 days ~60% in a week ~90%
Euphaea masoni is a species of damselfly in the family Euphaeidae, the gossamerwings. The male is almost entirely black, including its wings. The female has lighter colored wings. Euphaea masoni is found mostly in Southeast Asia, including southern China, India, Laos, Myanmar, Thailand, Vietnam.
It is found near streams. Phoretic associations between larvae of Nanocladius asiaticus (Diptera, Chironomidae) and Euphaea masoni have been reported. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Sok National Park | 🇹🇭 Thailand | |
| 2 | Khao Yai National Park | 🇹🇭 Thailand | |
| 3 | Khao Luang National Park | 🇹🇭 Thailand | |
| 4 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 5 | Cat Tien National Park | 🇻🇳 Vietnam | |
| 6 | Doi Inthanon National Park | 🇹🇭 Thailand |
Possible
About 20% of wildlife watchers report a Euphaea masoni sighting in Khao Luang National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 17th most-seen of the 36 insects we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
May and July
In those months about 40% of wildlife watchers report a Euphaea masoni in Khao Luang National Park on a given day, against under 5% in January, March–April, August and October, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Euphaea masoni sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 6
Of the 6 parks where we can rate Euphaea masoni sightings, Khao Luang National Park ranks 3rd at about 20%. The best odds are in Khao Sok National Park (Thailand, about 30%) and Khao Yai National Park (Thailand, about 30%).
Same genus: Euphaea
The closest relatives of the Euphaea masoni that you can see in Khao Luang National Park (genus Euphaea) are Euphaea ochracea (about 30%) and Blue-Sided Satinwing (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Euphaea masoni is recorded against all the insects logged in Khao Luang 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.
