Anthocharis scolymus
In 3 days ~10% in a week ~30%
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.
Rare
Under 5% of wildlife watchers report a Yellow Tip sighting in Tokyo on a given day, based on 51 verified sightings from GBIF citizen-science data. It is the 272nd 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 30%, if each day is a fresh chance.
April
In that month about 10% of wildlife watchers report a Yellow Tip in Tokyo on a given day, against under 5% in May to March, the lowest months.
6th of 7
Of the 7 cities where we can rate Yellow Tip sightings, Tokyo ranks 6th at under 5%. The best odds are in Wuhan (China, about 10%), Suzhou (China, about 10%) and Shanghai (China, about 10%).
Same family: Pieridae
The closest relatives of the Yellow Tip that you can see in Tokyo (family Pieridae, Whites, Yellows, and Sulphurs) are Small White (about 20%), Japanese Common Grass Yellow (about 20%) and Colias poliographus (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Yellow Tip is recorded against all the insects logged in Tokyo (51 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.
