Eurema laeta
In 3 days ~10% in a week ~20%
Eurema laeta, the more commonly known spotless grass yellow, is a small butterfly of the family Pieridae (the yellows and whites), which is found in India, Sri Lanka, China, Indochina, Japan, and onwards to Australia. Wet form: Male. Upper-side pale yellow, basal areas slightly irrorated with grey-black scales. Fore-wing with a broad vinescent-black outer marginal band, which curves from middle of the costa to upper median, below which it is sinuated to lower median, its posterior end being deeply excavated to the angle. Hind-wing with a distinctly defined black slender complete band; and a salmon-coloured patch of matted scales between the costal and sub-costal vein. Underside paler yellow, unmarked, except that a very faint indication of marginal dots and a small upper discocellular streak on both wings, and a dot above the cell and discal transverse streaks on hind-wing. Fore-wing with a sub-basal oval patch of compactly matted salmon-coloured scales, which extend below and partly above the basal portion of the median vein. Female. Upper-side paler yellow. Fore-wing with the outer band somewhat broader. Hind-wing with the band broader anteriorly and complete; no... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kakadu National Park | 🇦🇺 Australia |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Spotless Grass Yellow sighting in Tokyo on a given day, based on 22 verified sightings from GBIF citizen-science data. It is the 612th 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Spotless Grass Yellow in Tokyo on a given day, so our monthly data shows no clear season.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Spotless Grass Yellow sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
8th of 8
Of the 8 cities where we can rate Spotless Grass Yellow sightings, Tokyo ranks 8th at under 5%. The best odds are in Jabalpur (India, about 20%), Nashik (India, about 20%) and Pune (India, about 10%).
GBIF citizen-science records
It is estimated from how often the Spotless Grass Yellow is recorded against all the insects logged in Tokyo (22 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.
