Great Mormon Swallowtail

Great Mormon Swallowtail

Papilio memnon

Daily sighting probability ~40% · Likely
at Hanoi

In 3 days ~70% in a week >90%

19 Verified sightings at Hanoi
435 In all 21 parks From 2019 to 2026
April Best month
☀️ Diurnal When it's spotted

About the Great Mormon Swallowtail

Papilio memnon, the great Mormon, is a large butterfly native to southern Asia that belongs to the swallowtail family. It is widely distributed and has thirteen subspecies. The female is polymorphic and with mimetic forms.

Its range includes north-eastern India (including Sikkim, Assam and Nagaland), Nepal, Bangladesh, Myanmar, Nicobar Islands, Andaman Islands (stragglers only), western, southern and eastern China (including Hainan), Taiwan, southern Japan including Ryukyu Islands, Thailand, Laos, Vietnam, Kampuchea, Malaysia and Indonesia (Sumatra, Mentawai Islands, Nias, Batu, Simeulue, Bangka, Java, Kalimantan and the Lesser Sunda Islands).

This species is common and not threatened. The cultivation of citrus all over Southern Asia provides an abundance of food plants. The butterfly is large with a 120 to 150 millimetres (4.7 to 5.9 in) span. It has four male and many female forms, the females being highly polymorphic and many of them being mimics of unpalatable butterflies. This species has been studied extensively for understanding the genetic basis for polymorphy and Batesian mimicry. As many as twenty-six female forms are... Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Sinharaja Forest Reserve 🇱🇰 Sri Lanka
~40%
2 Cuc Phuong National Park 🇻🇳 Vietnam
~40%
3 Gunung Leuser National Park 🇮🇩 Indonesia
~30%
4 Kinabalu Park 🇲🇾 Malaysia
~30%
5 Kerinci Seblat National Park 🇮🇩 Indonesia
~30%
6 Kaeng Krachan National Park 🇹🇭 Thailand
~30%
7 Cat Tien National Park 🇻🇳 Vietnam
~20%
8 Kinabatangan Wildlife Sanctuary 🇲🇾 Malaysia
~20%
9 Khao Sok National Park 🇹🇭 Thailand
~20%
10 Wilpattu National Park 🇱🇰 Sri Lanka
~20%
11 Nagarhole National Park 🇮🇳 India
~20%
12 Taman Negara National Park 🇲🇾 Malaysia
~20%
13 Bali Barat National Park 🇮🇩 Indonesia
~20%
14 Periyar National Park 🇮🇳 India
~20%
15 Khao Luang National Park 🇹🇭 Thailand
~20%
16 Taroko National Park 🇹🇼 Taiwan
~20%
17 Minneriya National Park 🇱🇰 Sri Lanka
~20%
18 Khao Yai National Park 🇹🇭 Thailand
~10%
19 Danum Valley Conservation Area 🇲🇾 Malaysia
~10%
20 Doi Inthanon National Park 🇹🇭 Thailand
~10%
21 Sepilok 🇲🇾 Malaysia
~10%

Cities Where Found

# City Country Daily sighting probability
1 Hanoi 🇻🇳 Vietnam
~40%
2 Yogyakarta 🇮🇩 Indonesia
~30%
3 Jakarta 🇮🇩 Indonesia
~30%
4 Tuen Mun 🇨🇳 China
~30%
5 Tasikmalaya 🇮🇩 Indonesia
~30%
6 Taipei 🇹🇼 Taiwan
~20%
7 Kathmandu 🇳🇵 Nepal
~20%
8 Chattogram 🇧🇩 Bangladesh
~20%
9 Kalyan-Dombivli 🇮🇳 India
~20%
10 Naha 🇯🇵 Japan
~20%

Before you go

What are the chances of seeing a Great Mormon Swallowtail in Hanoi?

Likely

About 40% of wildlife watchers report a Great Mormon Swallowtail sighting in Hanoi on a given day, based on 19 verified sightings from GBIF citizen-science data. It is the 9th most-seen of the 36 insects we can rate there. Over three days the chance rises to about 70%, and over a week to over 90%, if each day is a fresh chance.

When is the best time to see a Great Mormon Swallowtail in Hanoi?

April and June

In those months about 60% of wildlife watchers report a Great Mormon Swallowtail in Hanoi on a given day, against under 5% in December to February, the lowest months.

What time of day is best to see a Great Mormon Swallowtail?

Between 9 am and noon

Across all the parks we cover, that three-hour window holds the most Great Mormon Swallowtail sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.

Is Hanoi the best place to see a Great Mormon Swallowtail?

Yes

Of the 39 cities where we can rate Great Mormon Swallowtail sightings, Hanoi has the highest daily chance: about 40%. Next come Yogyakarta (Indonesia, about 30%) and Jakarta (Indonesia, about 30%).

Where does the Great Mormon Swallowtail sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Great Mormon Swallowtail is recorded against all the insects logged in Hanoi (19 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.

← Back to Hanoi