Arhopala birmana
In 3 days ~20% in a week ~30%
Arhopala birmana, the Burmese bushblue, is a species of lycaenid or blue butterfly found in the Indomalayan realm. The easternmost form of this species: corthata Fruhst. flying in Hongkong is presumably very closely allied to ariel. In corthata the upper surface of the male is dark, but intensely bluish-violet. Easily separable from typical birmana by the hindwing in which the dark marginal band is analwards narrower. -
In typical birmana Mr. (= arisba Nic.) the postmedian band on the forewing beneath is still coherent, whereas in the larger form aberrans Nic. [ now species Arhopala aberrans (de Nicéville, [1889]) ] it is interrupted in the centre. In this form from Tenasserim the female has also much more white in the disc of the forewing above. The male of all the forms are above violettish-blue with a broader or narrower black margin. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Taroko National Park | 🇹🇼 Taiwan |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Tuen Mun | 🇨🇳 China |
With luck
About 10% of wildlife watchers report a Burmese Bushblue sighting in Tuen Mun on a given day, based on 12 verified sightings from GBIF citizen-science data. It is the 318th most-seen of the 557 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
July–September and November–January
In those months about 10% of wildlife watchers report a Burmese Bushblue in Tuen Mun on a given day, against under 5% in February–June and October, the lowest months.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Burmese Bushblue sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Tuen Mun, in our data
Tuen Mun is the only city on Wallace's Line with enough records to rate Burmese Bushblue sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Burmese Bushblue is recorded against all the insects logged in Tuen Mun (12 verified sightings), 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.
