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 Nanjing on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 242nd most-seen of the 272 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.
December
In that month about 20% of wildlife watchers report a Powdered Oakblue in Nanjing on a given day, against under 5% in January–June, August and October, the lowest months. That is one of Nanjing's driest months, with about 40 mm of rain against 240 mm in July.
Yes
Of the 5 cities where we can rate Powdered Oakblue sightings, Nanjing has the highest daily chance: about 10%. Next come Tokyo (Japan, about 10%) and Tuen Mun (China, about 10%).
Same family: Lycaenidae
The closest relatives of the Powdered Oakblue that you can see in Nanjing (family Lycaenidae, Gossamer-winged Butterflies) are Pale Grass Blue (about 20%), Angled Sunbeam (about 20%) and Holly Blue (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Powdered Oakblue is recorded against all the insects logged in Nanjing (7 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.
