Vestalis gracilis
In 3 days ~80% in a week >90%
Vestalis gracilis, is a species of damselfly belonging to the family Calopterygidae. It is known commonly as the clear-winged forest glory or clear-winged flash-wing. It is native to Southeast Asia and surrounding regions.
The male and female are similar in size; the male having an abdomen 45 to 46 millimeters long and a hindwing 34 to 38 millimeters long and the female with an abdomen 43 to 50 millimeters long and a hindwing 36 to 39 millimeters long.
The male is iridescent green with a yellow and black underside. It has brown legs and blue-tinged transparent wings. The eyes are dark brown above and greenish yellow below. The female is duller greenish brown in color. This is a common species across much of its range. It breeds in forest streams, often in disturbed and cultivated areas too. Commonly seen as a group rest among bushes in forest paths and shades together with Vestalis apicalis.
It is now synonymised with V. a. submontana and is considered as a separate species Vestalis submontana. List of odonates of India List... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Yai National Park | 🇹🇭 Thailand | |
| 2 | Periyar National Park | 🇮🇳 India | |
| 3 | Cat Tien National Park | 🇻🇳 Vietnam | |
| 4 | Khao Sok National Park | 🇹🇭 Thailand | |
| 5 | Doi Inthanon National Park | 🇹🇭 Thailand | |
| 6 | Kaeng Krachan National Park | 🇹🇭 Thailand |
Likely
About 40% of wildlife watchers report a Plain Flashwing sighting in Khao Yai National Park on a given day, based on 98 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the most-seen of the 221 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.
May and July–March
In those months about 40% of wildlife watchers report a Plain Flashwing in Khao Yai National Park on a given day, against about 20% in June, the lowest month.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Plain Flashwing sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 6 parks where we can rate Plain Flashwing sightings, Khao Yai National Park has the highest daily chance: about 40%. Next come Periyar National Park (India, about 30%) and Cat Tien National Park (Vietnam, about 20%).
GBIF citizen-science records
It is estimated from how often the Plain Flashwing is recorded against all the insects logged in Khao Yai National Park (98 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.
