Anthocharis scolymus
In 3 days ~30% in a week ~50%
Anthocharis scolymus, the yellow tip, is a butterfly in the subfamily Pierinae whose range is Eastern Asia (East China, Korea, Ussuri) where it is commonplace; occasionally it is found in Japan. The apex of the forewing is produced and falcate (sickle-shaped); white above and below, with dark apical marking and black median spot on the forewing above, and a black spot at the apex of the hindwing; the male moreover, has a moderately large orange spot in the apical area of the forewing, occurring occasionally also in the female (= ab. virgo form. nov. The butterfly appears in one brood and is common in swampy places. The larva feeds on cress (Draba, Descurainia sophia, Arabis hirsuta, Cardamine impatiens, and Rorippa). 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 Yellow Tip sighting in Nanjing on a given day, based on 19 verified sightings from GBIF citizen-science data. It is the 86th most-seen of the 272 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
April
In that month about 30% of wildlife watchers report a Yellow Tip in Nanjing on a given day, against under 5% in May–August and October–February, the lowest months.
Among the best
Of the 7 cities where we can rate Yellow Tip sightings, Nanjing ranks 4th at about 10%, level with the leaders once rounded. The best odds are in Wuhan (China, about 10%), Suzhou (China, about 10%) and Shanghai (China, about 10%).
GBIF citizen-science records
It is estimated from how often the Yellow Tip is recorded against all the insects logged in Nanjing (19 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.
