Arhopala japonica
In 3 days ~20% in a week ~40%
Arhopala japonica, the Japanese oakblue, is a species of butterfly in the family Lycaenidae. It is found in Indochina, Japan, the Ryukyu Islands, the Korean Peninsula and Taiwan. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Taroko National Park | 🇹🇼 Taiwan |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Japanese Oakblue sighting in Taipei on a given day, based on 71 verified sightings from GBIF citizen-science data. It is the 180th 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 and May–November
In those months about 10% of wildlife watchers report a Japanese Oakblue in Taipei on a given day, against under 5% in April and December–February, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Japanese Oakblue sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
4th of 4
Of the 4 cities where we can rate Japanese Oakblue sightings, Taipei ranks 4th at about 10%. The best odds are in Nagoya (Japan, about 20%), Osaka (Japan, about 10%) and Tokyo (Japan, about 10%).
Same family: Lycaenidae
The closest relatives of the Japanese Oakblue that you can see in Taipei (family Lycaenidae, Gossamer-winged Butterflies) are Pale Grass Blue (about 20%), Metallic Cerulean (about 20%) and Dark Cerulean (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Japanese Oakblue is recorded against all the insects logged in Taipei (71 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.
