Rounded Sixline Blue

Rounded Sixline Blue

Nacaduba berenice

Daily sighting probability ~10% · With luck
at Noosa National Park

In 3 days ~40% in a week ~60%

8 Verified sightings at Noosa National Park From 2019 to 2026
18 In all 2 parks
February Best month
☀️ Diurnal When it's spotted

About the Rounded Sixline Blue

Nacaduba berenice, the rounded six-line blue, is a lycaenid butterfly found in Indomalayan realm. The species was first described by Gottlieb August Wilhelm Herrich-Schäffer in 1869. Male upperside: dull purplish blue, in certain lights with a shining plumbeous (lead-coloured) frosting. Forewings and hindwings: black anteciliary lines and on the hindwing the black subterminal spot in interspace 2 on the underside apparent by transparency. Underside: purplish grey. Forewing: a pair of curved white lines from costa transversely across the cell to vein 1, a short similar line on the inner side of the discocellulars followed by three transverse discal similar lines from costa to vein 1, an inner and outer transverse subterminal series of slender white lunules and an anteciliary dark brown line. Hindwing: crossed transversely by three slender broken lines, with a short line on the inner side of the discocellulars between the outer two; these are followed by a discal and a postdiscal less broken and interrupted similar lines, a double series of slender white lunules and a dark anteciliary line as on the forewing. Cilia of both forewings and hindwings... Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Noosa National Park 🇦🇺 Australia
~10%
2 Lamington National Park 🇦🇺 Australia
~10%

Cities Where Found

# City Country Daily sighting probability
1 Brisbane 🇦🇺 Australia
~20%
2 Singapore 🇸🇬 Singapore
~10%
3 Tuen Mun 🇨🇳 China
~10%
4 Hong Kong 🇨🇳 China
<5%

Before you go

What are the chances of seeing a Rounded Sixline Blue in Noosa National Park?

With luck

About 10% of wildlife watchers report a Rounded Sixline Blue sighting in Noosa National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 16th most-seen of the 32 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 60%, if each day is a fresh chance.

When is the best time to see a Rounded Sixline Blue in Noosa National Park?

February and June

In those months about 30% of wildlife watchers report a Rounded Sixline Blue in Noosa National Park on a given day, against under 5% in May and August–December, the lowest months.

What time of day is best to see a Rounded Sixline Blue?

Between 10 am and 1 pm

Across all the parks we cover, that three-hour window holds the most Rounded Sixline Blue sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.

Is Noosa National Park the best place to see a Rounded Sixline Blue?

Yes

Of the 2 parks where we can rate Rounded Sixline Blue sightings, Noosa National Park has the highest daily chance: about 10%. Next come Lamington National Park (Australia, about 10%).

Which relatives of the Rounded Sixline Blue live in Noosa National Park?

Same family: Lycaenidae

The closest relatives of the Rounded Sixline Blue that you can see in Noosa National Park (family Lycaenidae, Gossamer-winged Butterflies) are Cycad Blue (about 10%), Pea Blue (about 10%) and Lesser Grass Blue (about 10%), with each one's daily chance of a sighting.

Where does the Rounded Sixline Blue sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Rounded Sixline Blue is recorded against all the insects logged in Noosa National Park (8 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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