Arhopala japonica
In 3 days ~30% in a week ~60%
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 Osaka on a given day, based on 54 verified sightings from GBIF citizen-science data. It is the 46th most-seen of the 352 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
June, August and November
In those months about 20% of wildlife watchers report a Japanese Oakblue in Osaka on a given day, against under 5% in January and 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.
2nd of 4
Of the 4 cities where we can rate Japanese Oakblue sightings, Osaka ranks 2nd at about 10%. The best odds are in Nagoya (Japan, about 20%).
GBIF citizen-science records
It is estimated from how often the Japanese Oakblue is recorded against all the insects logged in Osaka (54 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.
