Aciagrion approximans
In 3 days ~30% in a week ~50%
Aciagrion approximans, Indian violet dartlet, is a species of damselfly in the family Coenagrionidae. It is found in east and south of India. The range extends to Thailand, China and Cambodia. Fraser considered the specimen found in northeast as Aciagrion approximans and in south as Aciargion hisopa race krishna. A recent study revealed that the subspecies krishna found in south is not conspecific with A. hisopa and found to be very close to A. approximans found in northeast; but differing at the level of subspecies.
Aciagrion approximans approximans (Northeast India) Aciagrion approximans krishna (Western Ghats) It is a small, slim, slender damselfly with violet and black colors. Its thorax is black with lateral violet stripes. Segments 2 to 7 of the abdomen are black on dorsum and violet in the ventral half. Segments 8 and 9 are violet without any marks. Segment 10 is black on dorsum. The lower half of segment 8 is marked with black in A. a. krishna. Female is similar to the male; but paler in colors. Segments 8 and 9 are black and 10 is blue on dorsum.
It breeds in ponds, lakes or in slow moving streams. List of odonates... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Periyar National Park | 🇮🇳 India | |
| 2 | Doi Inthanon National Park | 🇹🇭 Thailand |
With luck
About 10% of wildlife watchers report an Indian Violet Dartlet sighting in Doi Inthanon National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 105th most-seen of the 153 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
June and August
In those months about 30% of wildlife watchers report an Indian Violet Dartlet in Doi Inthanon National Park on a given day, against under 5% in January–May, July and September–November, the lowest months. Those are among Doi Inthanon National Park's wettest months, with about 310 mm of rain a month against 20 mm in February.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Indian Violet Dartlet 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 2
Of the 2 parks where we can rate Indian Violet Dartlet sightings, Doi Inthanon National Park ranks 2nd at about 10%. The best odds are in Periyar National Park (India, about 30%).
Same family: Coenagrionidae
The closest relatives of the Indian Violet Dartlet that you can see in Doi Inthanon National Park (family Coenagrionidae, Narrow-winged Damselflies) are Black-Tailed Marsh Dart (about 20%), Ischnura rufostigma (about 20%) and Red-Tipped Shadefly (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Indian Violet Dartlet is recorded against all the insects logged in Doi Inthanon 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.
