Rapala manea
In 3 days ~20% in a week ~50%
Rapala manea, slate flash, is a butterfly of the family Lycaenidae. It is found in most of the Indomalayan realm (excluding Taiwan). The wingspan is 24–26 mm. The larvae of subspecies R. m. schistacea feed on the flowers of Rosaceae, Euphorbiaceae, Combretaceae and Leguminosae species, including Quisqualis indica and Acacia caesia. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Slate Flash sighting in Kolkata on a given day, based on 14 verified sightings from GBIF citizen-science data. It is the 124th most-seen of the 213 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
November
In that month about 20% of wildlife watchers report a Slate Flash in Kolkata on a given day, against under 5% in January and May–August, the lowest months. That is one of Kolkata's driest months, with about 25 mm of rain against 330 mm in July.
Among the best
Of the 12 cities where we can rate Slate Flash sightings, Kolkata ranks 7th at about 10%, level with the leaders once rounded. The best odds are in Pune (India, about 10%), Salem (India, about 10%) and Tuen Mun (China, about 10%).
Same family: Lycaenidae
The closest relatives of the Slate Flash that you can see in Kolkata (family Lycaenidae, Gossamer-winged Butterflies) are Plains Cupid (about 30%), Pale Grass Blue (about 20%) and Gram Blue (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Slate Flash is recorded against all the insects logged in Kolkata (14 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.
