Catopsilia pomona
In 3 days ~40% in a week ~70%
Catopsilia pomona, the common emigrant or lemon emigrant, is a medium-sized pierid butterfly found in Asia and parts of Australia. The species gets its name from its habit of migration. Some early authors considered them as two distinct species Catopsilia crocale and Catopsilia pomona.
The species has pale and dark morphs in Australia. The form crocale has the antennae black and the form pomona has the antennae pinkish or red. The development of these forms has been linked to photoperiod and temperature during growth.
Quoted from Bingham, C. T. (1907) The Fauna of British India, Including Ceylon and Burma: Butterflies volume 2. "The upperside of the male is chalky-white, sometimes with a more or less broad and clearly defined basal sulphur-yellow area on both fore and hind wings; this sulphur-yellow colour is at times diffused over the whole surface of the wings, though generally it becomes paler towards the terminal margins. For the fore wing, the whole, or sometimes only the apical half, of the costa narrowly black, this color widened out irregularly at the apex; termen widely black at the apex, the colour narrowed posteriorly. This border in some specimens... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cuc Phuong National Park | 🇻🇳 Vietnam | |
| 2 | Bandhavgarh National Park | 🇮🇳 India | |
| 3 | Nagarhole National Park | 🇮🇳 India | |
| 4 | Periyar National Park | 🇮🇳 India | |
| 5 | Kanha National Park | 🇮🇳 India | |
| 6 | Cat Tien National Park | 🇻🇳 Vietnam | |
| 7 | Yala National Park | 🇱🇰 Sri Lanka | |
| 8 | Khao Yai National Park | 🇹🇭 Thailand | |
| 9 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 10 | Gunung Leuser National Park | 🇮🇩 Indonesia | |
| 11 | Taroko National Park | 🇹🇼 Taiwan | |
| 12 | Springbrook National Park | 🇦🇺 Australia | |
| 13 | Daintree National Park | 🇦🇺 Australia |
Possible
About 20% of wildlife watchers report a Lemon Migrant sighting in Taichung on a given day, based on 37 verified sightings from GBIF citizen-science data. It is the 30th most-seen of the 197 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
June and July
In those months about 30% of wildlife watchers report a Lemon Migrant in Taichung on a given day, against under 5% in February and April, the lowest months. Those are among Taichung's wettest months, with about 260 mm of rain a month against 40 mm in December.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Lemon Migrant sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
50th of 64
Of the 64 cities where we can rate Lemon Migrant sightings, Taichung ranks 50th at about 20%. The best odds are in Salem (India, about 50%), Hanoi (Vietnam, about 40%) and Indore (India, about 40%).
GBIF citizen-science records
It is estimated from how often the Lemon Migrant is recorded against all the insects logged in Taichung (37 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.
