Ideopsis similis
In 3 days ~30% in a week ~60%
Ideopsis similis, the Ceylon blue glassy tiger, is a species of butterfly found in Asia, including Sri Lanka, India and Taiwan, that belongs to the subfamily Danainae (crows and tigers), in the family Nymphalidae (brush-footed butterflies). Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sinharaja Forest Reserve | 🇱🇰 Sri Lanka | |
| 2 | Cuc Phuong National Park | 🇻🇳 Vietnam | |
| 3 | Taroko National Park | 🇹🇼 Taiwan |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Hong Kong | 🇨🇳 China | |
| 2 | Taipei | 🇹🇼 Taiwan | |
| 3 | Tuen Mun | 🇨🇳 China | |
| 4 | Ho Chi Minh City | 🇻🇳 Vietnam | |
| 5 | Colombo [Sri Jayawardenepura Kotte] | 🇱🇰 Sri Lanka | |
| 6 | Kaohsiung | 🇹🇼 Taiwan | |
| 7 | Kuala Lumpur | 🇲🇾 Malaysia | |
| 8 | Bangkok | 🇹🇭 Thailand | |
| 9 | Guangzhou | 🇨🇳 China |
With luck
About 10% of wildlife watchers report a Ceylon Blue Glassy Tiger sighting in Taipei on a given day, based on 168 verified sightings from GBIF citizen-science data. It is the 71st most-seen of the 765 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
September to November
In those months about 20% of wildlife watchers report a Ceylon Blue Glassy Tiger in Taipei on a given day, against about 10% in December to August, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Ceylon Blue Glassy Tiger sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 9
Of the 9 cities where we can rate Ceylon Blue Glassy Tiger sightings, Taipei ranks 2nd at about 10%. The best odds are in Hong Kong (China, about 30%).
Same family: Nymphalidae
The closest relatives of the Ceylon Blue Glassy Tiger that you can see in Taipei (family Nymphalidae, Brush-footed Butterflies) are Common Mapwing (about 20%), Common Palmfly (about 20%) and Great Eggfly (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Ceylon Blue Glassy Tiger is recorded against all the insects logged in Taipei (168 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.
