Iraota rochana
In 3 days ~20% in a week ~40%
Iraota rochana, the scarce silverstreak, is a species of lycaenid or blue butterfly with several subspecies found in Manipur, Myanmar, Java, Borneo, Sumatra, Malaya, Langkawi, Thailand, Singapore, Sulawesi and the Philippines. The species was first described by Thomas Horsfield in 1829. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Singapore | 🇸🇬 Singapore |
With luck
About 10% of wildlife watchers report a Scarce Silverstreak Blue sighting in Singapore on a given day, based on 145 verified sightings from GBIF citizen-science data. It is the 183rd most-seen of the 1045 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.
Any time of year
In every month with enough records, about 10% of wildlife watchers report a Scarce Silverstreak Blue in Singapore on a given day, so our monthly data shows no clear season.
Only Singapore, in our data
Singapore is the only city on Wallace's Line with enough records to rate Scarce Silverstreak Blue sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Lycaenidae
The closest relatives of the Scarce Silverstreak Blue that you can see in Singapore (family Lycaenidae, Gossamer-winged Butterflies) are Branded Imperial (about 20%), Lesser Grass Blue (about 20%) and Tiny Grass Blue (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Scarce Silverstreak Blue is recorded against all the insects logged in Singapore (145 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.
