Aciagrion approximans
In 3 days ~60% in a week ~90%
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 |
Possible
About 30% of wildlife watchers report an Indian Violet Dartlet sighting in Periyar National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 17th most-seen of the 44 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.
June
In that month about 50% of wildlife watchers report an Indian Violet Dartlet in Periyar National Park on a given day, against under 5% in February–March, July and October, the lowest months. That is one of Periyar National Park's wettest months, with about 340 mm of rain against 15 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.
Yes
Of the 2 parks where we can rate Indian Violet Dartlet sightings, Periyar National Park has the highest daily chance: about 30%. Next come Doi Inthanon National Park (Thailand, about 10%).
GBIF citizen-science records
It is estimated from how often the Indian Violet Dartlet is recorded against all the insects logged in Periyar National Park (9 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.
