Lyssa zampa
In 3 days ~40% in a week ~70%
Lyssa zampa, the tropical swallowtail moth or Laos brown butterfly, is a moth of the family Uraniidae. The species was first described by British entomologist Arthur Gardiner Butler in 1869. The species is native to a wide range of tropical South-East Asia: Indonesia, Singapore, Malaysia, Thailand, and the Philippines. It is also recorded from Andaman Islands, southern China, the Himalayas, and sporadically in East Asia: Taiwan, Japan and South Korea. The forewing length is about 70 mm (2.8 in) and the wingspan reaches a maximum of 160 mm (6.3 in).
It is most abundant from May to November depending on the location. The genus Lyssa is generally categorized as a nocturnal or crepuscular group, but this species has been found to be active both during the day and at night. This species is also known for its mass emergence and migration. Because of that ecology and the habit that they are often attracted by urban bright lights, this species can attract human attention. Sightings in urban areas are attributed to dry spells in forests.
The larvae feed on Endospermum and other members of the rubber tree family (Euphorbiaceae). Media related to Lyssa zampa... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kinabalu Park | 🇲🇾 Malaysia | |
| 2 | Khao Yai National Park | 🇹🇭 Thailand | |
| 3 | Taman Negara National Park | 🇲🇾 Malaysia | |
| 4 | Cat Tien National Park | 🇻🇳 Vietnam | |
| 5 | Gunung Leuser National Park | 🇮🇩 Indonesia | |
| 6 | Doi Inthanon National Park | 🇹🇭 Thailand | |
| 7 | Sepilok | 🇲🇾 Malaysia | |
| 8 | Kaeng Krachan National Park | 🇹🇭 Thailand |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Manila | 🇵🇭 Philippines | |
| 2 | Kuching | 🇲🇾 Malaysia | |
| 3 | Kuala Lumpur | 🇲🇾 Malaysia | |
| 4 | Hong Kong | 🇨🇳 China | |
| 5 | Hanoi | 🇻🇳 Vietnam | |
| 6 | Nanning | 🇨🇳 China | |
| 7 | Davao City | 🇵🇭 Philippines | |
| 8 | Tuen Mun | 🇨🇳 China | |
| 9 | Johor Bahru | 🇲🇾 Malaysia | |
| 10 | Ho Chi Minh City | 🇻🇳 Vietnam |
Possible
About 20% of wildlife watchers report a Tropical Swallowtail Moth sighting in Gunung Leuser National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 39th most-seen of the 103 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.
March
In that month about 40% of wildlife watchers report a Tropical Swallowtail Moth in Gunung Leuser National Park on a given day, against under 5% in January, April–June and October–November, the lowest months. That is one of Gunung Leuser National Park's driest months, with about 180 mm of rain against 700 mm in September.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Tropical Swallowtail Moth sightings with a recorded time, and about half of them come between 6 am and 6 pm: it is seen both by day and at night.
5th of 8
Of the 8 parks where we can rate Tropical Swallowtail Moth sightings, Gunung Leuser National Park ranks 5th at about 20%. The best odds are in Kinabalu Park (Malaysia, about 30%), Khao Yai National Park (Thailand, about 20%) and Taman Negara National Park (Malaysia, about 20%).
Same order: Lepidoptera
The closest relatives of the Tropical Swallowtail Moth that you can see in Gunung Leuser National Park (order Lepidoptera, Butterflies and Moths) are Great Eggfly (about 40%), Chocolate Pansy (about 30%) and Great Mormon Swallowtail (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Tropical Swallowtail Moth is recorded against all the insects logged in Gunung Leuser 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.
