Ideopsis vulgaris
In 3 days ~50% in a week ~80%
Ideopsis vulgaris, the blue glassy tiger, is a butterfly that belongs to the crows and tigers, that is, the danaid group of the brush-footed butterflies family. In 2023, Thapa and Bhuyan published a paper recording of this species from Dehing Patkai National Park in Assam, India, marking the first documented occurrence in the state and the second record for the country.
This species can be found in India, SriLanka, Singapore, Thailand, Laos, Vietnam, Hainan, South Burma - Sundaland, Sumatra, Java, Lesser Sunda Islands - Alor, Borneo – Palawan. These butterflies inhabits a range of habitats, but especially occur at the edge of rainforest or plantations and in the coastal mangrove areas.
Ideopsis vulgaris has a wingspan reaching 70–80 millimetres (2.8–3.1 in). This butterfly is quite similar to the dark glassy tiger (Parantica agleoides). A transverse black bar... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Way Kambas National Park | 🇮🇩 Indonesia | |
| 2 | Cuc Phuong National Park | 🇻🇳 Vietnam | |
| 3 | Taman Negara National Park | 🇲🇾 Malaysia | |
| 4 | Kinabalu Park | 🇲🇾 Malaysia | |
| 5 | Sepilok | 🇲🇾 Malaysia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kuala Lumpur | 🇲🇾 Malaysia | |
| 2 | Singapore | 🇸🇬 Singapore |
Possible
About 20% of wildlife watchers report a Blue Glassy Tiger sighting in Taman Negara National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 25th most-seen of the 84 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
July
In that month about 40% of wildlife watchers report a Blue Glassy Tiger in Taman Negara National Park on a given day, against under 5% in March, May–June, September and November–January, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most 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.
3rd of 5
Of the 5 parks where we can rate Blue Glassy Tiger sightings, Taman Negara National Park ranks 3rd at about 20%. The best odds are in Way Kambas National Park (Indonesia, about 40%) and Cuc Phuong National Park (Vietnam, about 30%).
Same family: Nymphalidae
The closest relatives of the Blue Glassy Tiger that you can see in Taman Negara National Park (family Nymphalidae, Brush-footed Butterflies) are Chocolate Pansy (about 30%), Great Marquis (about 30%) and Great Eggfly (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Blue Glassy Tiger is recorded against all the insects logged in Taman Negara National Park (9 verified sightings from 2019 to 2026), 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.
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