Biston perclara
In 3 days ~20% in a week ~40%
Biston perclara is a moth of the family Geometridae. It is found in Taiwan and Japan. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Taroko National Park | 🇹🇼 Taiwan |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Taipei | 🇹🇼 Taiwan |
With luck
About 10% of wildlife watchers report a Biston perclara sighting in Taipei on a given day, based on 43 verified sightings from GBIF citizen-science data. It is the 218th most-seen of the 765 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.
March–April, June and August–October
In those months about 10% of wildlife watchers report a Biston perclara in Taipei on a given day, against under 5% in May, July and November–February, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Biston perclara sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Only Taipei, in our data
Taipei is the only city on Wallace's Line with enough records to rate Biston perclara sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Geometridae
The closest relatives of the Biston perclara that you can see in Taipei (family Geometridae, Geometer Moths) are Milionia basalis (about 20%), Eumelea ludovicata (about 10%) and Asian Cross-Lined Wave Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Biston perclara is recorded against all the insects logged in Taipei (43 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.
