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Great Eggfly
Hypolimnas bolina
- KingdomAnimalia (Animals)
- PhylumArthropoda (Arthropods)
- ClassInsecta (Insects)
- OrderLepidoptera (Butterflies and Moths)
- FamilyNymphalidae (Brush-footed Butterflies)
- GenusHypolimnas (Diadems & Eggflies)
- SpeciesHypolimnas bolina (Great Eggfly)
In 3 days ~80% in a week >90%
22 Verified sightings at Cuc Phuong National Park From 2019 to 2026
696 In all 27 parks
June Best month
☀️ Diurnal When it's spotted
About the Great Eggfly
Hypolimnas bolina, the great eggfly, common eggfly, varied eggfly, or in New Zealand the blue moon butterfly, is a species of nymphalid butterfly found from Madagascar to Asia and Australia. H. bolina is a black-bodied butterfly with a wingspan of about 70–85 millimetres (2.8–3.3 in). The species has a high degree of sexual dimorphism. The female is mimetic with multiple morphs.
Males are monomorphic. The dorsal wing surface is jet black but features three prominent spots, two on the forewing and one on the hindwing. To a human observer these appear as white spots fringed with blue-violet. They actually consist of a white center overlain by bright ultraviolet iridescence, a colour generated by nanostructures on the wing scale surface. Numerous smaller white spots fringe the fore- and hindwings. The ventral surface lacks any ultraviolet iridescence and consists essentially of banded white markings set against a brownish background. These males exhibit lower body mass per unit wing area, implying lower wing loading, more elongate wings, resulting in a higher aspect ratio, which are also the characteristics used to differ them by their conspecific... Wikipedia →
Recent sightings of Great Eggfly in Cuc Phuong National Park
LIVEiNaturalistGlobal Distribution
Parks Where Found
Cities Where Found
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Yogyakarta | 🇮🇩 Indonesia | |
| 2 | Ranchi | 🇮🇳 India | |
| 3 | Jakarta | 🇮🇩 Indonesia | |
| 4 | Prayagraj | 🇮🇳 India | |
| 5 | Jabalpur | 🇮🇳 India | |
| 6 | Manila | 🇵🇭 Philippines | |
| 7 | Tasikmalaya | 🇮🇩 Indonesia | |
| 8 | Ho Chi Minh City | 🇻🇳 Vietnam | |
| 9 | Hanoi | 🇻🇳 Vietnam | |
| 10 | Kalyan-Dombivli | 🇮🇳 India |
Closest Relatives at Cuc Phuong National Park
Before you go
What are the chances of seeing a Great Eggfly in Cuc Phuong National Park?
Likely
About 40% of wildlife watchers report a Great Eggfly sighting in Cuc Phuong National Park on a given day, based on 22 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 21st most-seen of the 126 insects we can rate there. Over three days the chance rises to about 80%, and over a week to over 90%, if each day is a fresh chance.
When is the best time to see a Great Eggfly in Cuc Phuong National Park?
June
In that month about 80% of wildlife watchers report a Great Eggfly in Cuc Phuong National Park on a given day, against under 5% in August and October–November, the lowest months.
What time of day is best to see a Great Eggfly?
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Great Eggfly 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 Cuc Phuong National Park the best place to see a Great Eggfly?
Yes
Of the 27 parks where we can rate Great Eggfly sightings, Cuc Phuong National Park has the highest daily chance: about 40%. Next come Bandhavgarh National Park (India, about 40%) and Khao Sok National Park (Thailand, about 40%). All parks ranked.
Which relatives of the Great Eggfly live in Cuc Phuong National Park?
Same family: Nymphalidae
The closest relatives of the Great Eggfly that you can see in Cuc Phuong National Park (family Nymphalidae, Brush-footed Butterflies) are Little Mapwing (about 50%), Himalayan Jester (about 50%) and Marbled Map (about 50%), with each one's daily chance of a sighting.
Where does the Great Eggfly sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Great Eggfly is recorded against all the insects logged in Cuc Phuong National Park (22 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.
