Cigaritis syama
In 3 days ~50% in a week ~80%
Cigaritis syama, the club silverline, is a butterfly of the family Lycaenidae. It is found in South-East Asia. The wingspan is 27–32 mm. The larvae feed on Psidium guajava and Dioscorea batatus. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Possible
About 20% of wildlife watchers report a Club Silverline sighting in Chattogram on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 21st most-seen of the 35 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
May to July
In those months about 30% of wildlife watchers report a Club Silverline in Chattogram on a given day, against under 5% in August to April, the lowest months. Those are among Chattogram's wettest months, with about 550 mm of rain a month against 10 mm in January.
Yes
Of the 6 cities where we can rate Club Silverline sightings, Chattogram has the highest daily chance: about 20%. Next come Tuen Mun (China, about 10%) and Taipei (Taiwan, under 5%).
Same family: Lycaenidae
The closest relatives of the Club Silverline that you can see in Chattogram (family Lycaenidae, Gossamer-winged Butterflies) are Dark Grass Blue (about 30%), Common Line Blue (about 20%) and Common Yamfly (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Club Silverline is recorded against all the insects logged in Chattogram (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.
