Archibasis oscillans
In 3 days ~40% in a week ~60%
Archibasis oscillans, long-banded bluetail, is a species of damselfly in family Coenagrionidae. It is found from India, Thailand, Laos, and Indonesia. It is slender and long damselfly with blue capped light blue eyes. Its thorax is black with azure blue antehumeral stripes followed by blue on lateral sides. Abdomen is black on dorsum and greenish yellow on the ventral half of the lateral sides up to segment 7. Remaining segments are azure blue with apical black rings. Female is similar to the male; though a bit robust and paler in colors.
It breeds in lowland forest streams and rivers. List of odonates of India List of odonata of Kerala http://animaldiversity.org/accounts/Archibasis_oscillans/classification/ Data related to Archibasis oscillans at Wikispecies
Media related to Archibasis oscillans at Wikimedia Commons Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Thrissur | 🇮🇳 India |
With luck
About 10% of wildlife watchers report a Long-Banded Bluetail sighting in Thrissur on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 79th most-seen of the 93 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 60%, if each day is a fresh chance.
August
In that month about 40% of wildlife watchers report a Long-Banded Bluetail in Thrissur on a given day, against under 5% in September to May, the lowest months. That is one of Thrissur's wettest months, with about 320 mm of rain against 10 mm in January.
Only Thrissur, in our data
Thrissur is the only city on Wallace's Line with enough records to rate Long-Banded Bluetail sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Coenagrionidae
The closest relatives of the Long-Banded Bluetail that you can see in Thrissur (family Coenagrionidae, Narrow-winged Damselflies) are Coromandel Marsh Dart (about 30%), Orange-Tailed Marsh Dart (about 30%) and Wandering Midget (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Long-Banded Bluetail is recorded against all the insects logged in Thrissur (5 verified sightings), 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.
