Arhopala madytus
In 3 days ~30% in a week ~60%
Arhopala madytus, the bright oakblue, is a butterfly of the family Lycaenidae. The species was first described by Hans Fruhstorfer in 1914. It is found on New Guinea and adjacent islands (Aru, Ambon, Waigeu, from Western New Guinea to Papua, Woodlark and the Louisiades) and the north-east coast of Queensland, Australia.
The wingspan is about 40 mm. Similar to Arhopala meander but above lighter bluish-violet. Beneath particularly the forewing shows dark longitudinal stripes on the hoary whitish-grey ground. The larvae feed on Terminalia catappa, T. melanocarpa, T. sericocarpa and Hibiscus tiliaceus. They are attended by the ant species Oecophylla smaragdina. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Daintree National Park | 🇦🇺 Australia |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Bright Oak-Blue sighting in Daintree National Park on a given day, based on 17 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 208th most-seen of the 856 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
November and December
In those months about 30% of wildlife watchers report a Bright Oak-Blue in Daintree National Park on a given day, against under 5% in April–June, August and October, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Bright Oak-Blue sightings with a recorded time, and about 9 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 Bright Oak-Blue sightings: about 10% of wildlife watchers there report one on a given day.
Same genus: Arhopala
The closest relatives of the Bright Oak-Blue that you can see in Daintree National Park (genus Arhopala, Oakblues) are Shining Oak-Blue (about 10%) and White Oak-Blue (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Bright Oak-Blue is recorded against all the insects logged in Daintree National Park (17 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.
