Penthema formosanum
In 3 days ~20% in a week ~40%
Penthema formosanum is a butterfly of the family Nymphalidae. It is endemic to Taiwan. The wingspan is 70–85 mm. The larvae have been recorded on Sinocalamus oldhami, Bambusa multiplex and Phyllostachys makinoi. 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 Taiwanese Kaiser sighting in Taipei on a given day, based on 66 verified sightings from GBIF citizen-science data. It is the 176th 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.
April to September
In those months about 10% of wildlife watchers report a Taiwanese Kaiser in Taipei on a given day, against under 5% in October to March, the lowest months.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Taiwanese Kaiser sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Taipei, in our data
Taipei is the only city on Wallace's Line with enough records to rate Taiwanese Kaiser sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Nymphalidae
The closest relatives of the Taiwanese Kaiser that you can see in Taipei (family Nymphalidae, Brush-footed Butterflies) are Common Mapwing (about 20%), Common Palmfly (about 20%) and Great Eggfly (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Taiwanese Kaiser is recorded against all the insects logged in Taipei (66 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.
