Blue-Banded Eggfly

Blue-Banded Eggfly

Hypolimnas alimena

Daily sighting probability ~20% · Possible
at Kakadu National Park

In 3 days ~50% in a week ~80%

19 Verified sightings at Kakadu National Park From 2019 to 2026
55 In all 3 parks
December Best month
☀️ Diurnal When it's spotted

About the Blue-Banded Eggfly

Hypolimnas alimena, the blue-banded eggfly, is a species of butterfly in the family Nymphalidae. It is found in the Solomon Islands, Indonesia (Aru Islands, Irian Jaya, Kei Islands, Maluku,Timor), New Guinea and Australia (the coast of New South Wales, the Northern Territory and Queensland).

The wingspan of H. alimena is 80–90 mm. The ground colour of the wings is black with a row of white dots and a blue band. These butterflies resemble closely to related species,H. bolina.The males exhibit less visually elaborate structural coloration, as compared. The dorsal blue coloration of this butterfly has weak iridescence, and is not very bright. This is because it arises from a simpler nanoscale surface structure, unlike the more complex nanoscale multilayer-arrays structure of H. bolina, which gives it a brighter sheen and saturation.

The males of this species primarily utilize a sit-and wait-strategy for locating mates. This behavior is similar to Hypolimnas bolina. However, unlike H. bolina, these males do not engage in extended aerial disputes for the territorial defence. Both of their flight morphology is strikingly similar, and does not show any significant... Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Kakadu National Park 🇦🇺 Australia
~20%
2 Daintree National Park 🇦🇺 Australia
~20%
3 Raja Ampat 🇮🇩 Indonesia
~10%

Before you go

What are the chances of seeing a Blue-Banded Eggfly in Kakadu National Park?

Possible

About 20% of wildlife watchers report a Blue-Banded Eggfly sighting in Kakadu National Park on a given day, based on 19 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 19th most-seen of the 76 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.

When is the best time to see a Blue-Banded Eggfly in Kakadu National Park?

December

In that month about 60% of wildlife watchers report a Blue-Banded Eggfly in Kakadu National Park on a given day, against under 5% in January–March, May, July and November, the lowest months. That is one of Kakadu National Park's wettest months, with about 250 mm of rain against almost none in August.

What time of day is best to see a Blue-Banded Eggfly?

Between 10 am and 1 pm

Across all the parks we cover, that three-hour window holds the most Blue-Banded 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 Kakadu National Park the best place to see a Blue-Banded Eggfly?

Yes

Of the 3 parks where we can rate Blue-Banded Eggfly sightings, Kakadu National Park has the highest daily chance: about 20%. Next come Daintree National Park (Australia, about 20%) and Raja Ampat (Indonesia, about 10%).

Where does the Blue-Banded Eggfly sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Blue-Banded Eggfly is recorded against all the insects logged in Kakadu National Park (19 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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