Nordstromia japonica
In 3 days ~10% in a week ~20%
Nordstromia japonica is a species of moth belonging to the subfamily Drepaninae. It is found in Japan and China (Hunan and Sichuan). The wingspan is 25–37 mm. Adults are pale vinous lavender grey, with two narrow brown-bordered, yellow, obliquely transverse bands on both wings. The outer band crosses from the apex to the middle of the abdominal margin and the inner band from the middle of the costa to one-third the latter. The costal edge and apex of the forewings are ochreous yellow. There is a slight curved brown streak on the forewings and a small spot on the hindwings at the end of the cell. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Nordstromia japonica sighting in Tokyo on a given day, based on 18 verified sightings from GBIF citizen-science data. It is the 470th most-seen of the 1013 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
April
In that month about 10% of wildlife watchers report a Nordstromia japonica in Tokyo on a given day, against under 5% in May to March, the lowest months.
Among the best
Of the 2 cities where we can rate Nordstromia japonica sightings, Tokyo ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Seoul (South Korea, under 5%).
GBIF citizen-science records
It is estimated from how often the Nordstromia japonica is recorded against all the insects logged in Tokyo (18 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.
