Nacaduba beroe
In 3 days ~10% in a week ~30%
Nacaduba beroe, the opaque six-line blue, is a lycaenid butterfly found in South and Southeast Asia. The species was first described by Cajetan Felder and Rudolf Felder in 1865. In beroe Fldr. The blackish-brown marginal spots beneath are
rather small, proximally intensely bordered with white; the yellow halo of the subanal eyespot is continued yet in the direction of the apex of the hindwing. 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 an Opaque Sixline Blue sighting in Singapore on a given day, based on 49 verified sightings from GBIF citizen-science data. It is the 367th 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 30%, if each day is a fresh chance.
March–April and August
In those months about 10% of wildlife watchers report an Opaque Sixline Blue in Singapore on a given day, against under 5% in May–July and September–February, the lowest months.
Only Singapore, in our data
Singapore is the only city on Wallace's Line with enough records to rate Opaque Sixline Blue sightings: under 5% of wildlife watchers there report one on a given day.
Same genus: Nacaduba
The closest relatives of the Opaque Sixline Blue that you can see in Singapore (genus Nacaduba) are Rounded Sixline Blue (about 10%), Transparent 6-Line Blue (about 10%) and Large Fourline Blue (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Opaque Sixline Blue is recorded against all the insects logged in Singapore (49 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.
