Sinthusa nasaka
In 3 days ~10% in a week ~20%
Sinthusa nasaka, the narrow spark, is a small butterfly found in India that belongs to the lycaenids or blues family. Range: India to Taiwan, including Sundaland, the Philippines and Sulawesi (Hong Kong, Fujian, Guangxi and Hainan), Sikkim to Burma, Thailand, Laos, India (Meghalaya, Alipurduar, Darjeeling, Jalpaiguri and Nagaland), Bangladesh
and Sunderland. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Singapore | 🇸🇬 Singapore |
Rare
Under 5% of wildlife watchers report a Narrow Spark sighting in Singapore on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 788th most-seen of the 1045 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Narrow Spark 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 Narrow Spark sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Lycaenidae
The closest relatives of the Narrow Spark 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 Narrow Spark is recorded against all the insects logged in Singapore (9 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.
