Mortonagrion varralli
In 3 days ~20% in a week ~40%
Mortonagrion varralli, the brown dartlet, is a species of damselfly in the family Coenagrionidae, endemic to India. The insect is named after Frederic Charles Fraser's wife, Ethel Grace Fraser (née Varrall) (1881–1960), a constant companion of his collecting trips in India.
It is a small damselfly with ground-colour head and brown capped grey eyes. Its thorax is pale brown with a narrow antehumeral pale blue stripe, followed by pale blue at base. Abdomen is reddish-brown; 8th segment has a broader pale sky-blue basal annule which extends apically on each side. Female is similar to the male.
The species is commonly found at sea-level or on the foothills of the Western Ghats. Similarly to species in the genus Copera, it prefers the dense undergrowth. List of odonates of India List of odonata of Kerala Data related to Mortonagrion varralli at Wikispecies
Media related to Mortonagrion varralli at Wikimedia Commons Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kochi | 🇮🇳 India |
With luck
About 10% of wildlife watchers report a Brown Dartlet sighting in Kochi on a given day, based on 25 verified sightings from GBIF citizen-science data. It is the 173rd most-seen of the 428 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
February and April–October
In those months about 10% of wildlife watchers report a Brown Dartlet in Kochi on a given day, against under 5% in March and November–January, the lowest months.
Only Kochi, in our data
Kochi is the only city on Wallace's Line with enough records to rate Brown Dartlet sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Coenagrionidae
The closest relatives of the Brown Dartlet that you can see in Kochi (family Coenagrionidae, Narrow-winged Damselflies) are Coromandel Marsh Dart (about 40%), Common Bluetail (about 30%) and Wandering Midget (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Brown Dartlet is recorded against all the insects logged in Kochi (25 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.
