Nacaduba cyanea
In 3 days ~60% in a week ~90%
Nacaduba cyanea, the tailed green-banded line-blue, is a species of butterfly in the family Lycaenidae, and formerly considered a member of the genus Danis. It is found in the Indonesia (Irian Jaya, Maluku), Papua New Guinea, the Solomon Islands and Australia (Queensland).
The wingspan is about 30 mm. Adult males are blue with a dark brown wing margin, with a pale blue to white patch on the hindwing. Females are white, with a black border around the wings and a row of blue-edged black spots.
The larvae feed on Entada phaseoloides and Entada scandens. They are bright green, with pale brown heads. The larvae are attended to by ants of the genus Anonychomyrma. Pupation takes place in a brown pupa with dark markings.
N. c... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Daintree National Park | 🇦🇺 Australia |
More parks will be added in future updates.
Possible
About 30% of wildlife watchers report a Tailed Green-Banded Line Blue sighting in Daintree National Park on a given day, based on 88 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 17th most-seen of the 856 insects we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
October to February
In those months about 40% of wildlife watchers report a Tailed Green-Banded Line Blue in Daintree National Park on a given day, against about 20% in April–May and August–September, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Tailed Green-Banded Line Blue sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Daintree National Park, in our data
Daintree National Park is the only park on Wallace's Line with enough records to rate Tailed Green-Banded Line Blue sightings: about 30% of wildlife watchers there report one on a given day.
Same family: Lycaenidae
The closest relatives of the Tailed Green-Banded Line Blue that you can see in Daintree National Park (family Lycaenidae, Gossamer-winged Butterflies) are Large Green-Banded Blue (about 20%), Shining Oak-Blue (about 10%) and Bright Oak-Blue (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Tailed Green-Banded Line Blue is recorded against all the insects logged in Daintree National Park (88 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.
