Arhopala bazalus
In 3 days ~20% in a week ~30%
Arhopala bazalus, the powdered oakblue, is a lycaenid or blue butterfly first described by William Chapman Hewitson in 1852. It is found in Myanmar, mainland China, India (Assam, kerala and Sikkim), Indochina, Japan, the Philippines, and Taiwan. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Powdered Oakblue sighting in Tokyo on a given day, based on 79 verified sightings from GBIF citizen-science data. It is the 180th most-seen of the 1013 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
February and August–December
In those months about 10% of wildlife watchers report a Powdered Oakblue in Tokyo on a given day, against under 5% in January and March–July, the lowest months.
Among the best
Of the 5 cities where we can rate Powdered Oakblue sightings, Tokyo ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Nanjing (China, about 10%).
GBIF citizen-science records
It is estimated from how often the Powdered Oakblue is recorded against all the insects logged in Tokyo (79 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.
