Pseudagrion microcephalum
In 3 days ~30% in a week ~60%
The blue riverdamsel, Pseudagrion microcephalum is a common species of damselfly in the family Coenagrionidae. It is also known as the blue sprite and blue grass dart. For many years, Pseudagrion microcephalum was considered to be a widespread species occurring across southern and eastern Asia, Australasia and the Pacific.
In 2026, Malte Seehausen and Milen Marinov reviewed the Pseudagrion microcephalum species complex and restricted Pseudagrion microcephalum to populations from the Indian subcontinent and Sri Lanka. As part of this revision, Australian, Papuan and Pacific populations previously identified as Pseudagrion microcephalum were reassigned to several distinct species, including Pseudagrion crenatum in Australia and New Guinea. Other populations from Southeast Asia and the western Pacific were also reassigned to newly recognised regional species.
This species can be found in India and Sri Lanka. It is a medium-sized damselfly with pale blue eyes, dark on top. They grow to 38mm in length. Its thorax is azure blue with black, broad dorsal stripes and narrow humeral stripes. Abdominal segments 1 and 2 are blue with... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sepilok | 🇲🇾 Malaysia |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kochi | 🇮🇳 India | |
| 2 | Singapore | 🇸🇬 Singapore | |
| 3 | Thrissur | 🇮🇳 India | |
| 4 | Thiruvananthapuram | 🇮🇳 India | |
| 5 | Kuching | 🇲🇾 Malaysia | |
| 6 | Denpasar | 🇮🇩 Indonesia | |
| 7 | Colombo [Sri Jayawardenepura Kotte] | 🇱🇰 Sri Lanka | |
| 8 | Kollam | 🇮🇳 India | |
| 9 | Taichung | 🇹🇼 Taiwan | |
| 10 | Kolkata | 🇮🇳 India |
With luck
About 10% of wildlife watchers report a Blue Riverdamsel sighting in Sepilok on a given day, based on 14 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 44th most-seen of the 87 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
January
In that month about 40% of wildlife watchers report a Blue Riverdamsel in Sepilok on a given day, against under 5% in March–June and December, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Blue Riverdamsel sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Sepilok, in our data
Sepilok is the only park on Wallace's Line with enough records to rate Blue Riverdamsel sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Coenagrionidae
The closest relatives of the Blue Riverdamsel that you can see in Sepilok (family Coenagrionidae, Narrow-winged Damselflies) are Orange-Tailed Marsh Dart (about 20%), Xiphiagrion cyanomelas (about 10%) and Variable Wisp (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Blue Riverdamsel is recorded against all the insects logged in Sepilok (14 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.
