Curetis bulis
In 3 days ~60% in a week ~90%
Curetis bulis, the bright sunbeam, is a species of butterfly belonging to the lycaenid family. It is found in Asia. Male Male upperside, forewing: velvety black, an elongate broad medial patch dark orange red, that extends from base outwards for about three-fourths the length of the wing and fills the area from vein 1 to the middle of the cell; in some specimens diffusely, spread below vein 1 near base, but there shaded with dusky black; the outer margin of this red patch unevenly rounded. Hindwing: brownish black, a large orange-red spot above vein 3 to near apex, inwardly extended into the cell to near the base of the wing and posteriorly diffuse below vein 3, but in the cell thickly overlaid with dusky-black scaling and posteriorly shaded with long brown hairs that in certain lights take a golden tint; above the cell extended from the base of the wing to the inner margin of the orange spot is a prominent broad streak of a shade darker than the ground colour; abdominal fold pale pinkish brown. Underside: silvery white with sparsely scattered minute black dots. Forewing: a discal and inner subterminal series of very indistinct somewhat lunular black markings that... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Namdapha National Park | 🇮🇳 India |
More parks will be added in future updates.
Possible
About 30% of wildlife watchers report a Bright Sunbeam sighting in Namdapha National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 59th most-seen of the 71 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.
April
In that month about 50% of wildlife watchers report a Bright Sunbeam in Namdapha National Park on a given day, against under 5% in November to January, the lowest months. June to August have too few records to rate.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Bright Sunbeam 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 Namdapha National Park, in our data
Namdapha National Park is the only park on Wallace's Line with enough records to rate Bright Sunbeam sightings: about 30% of wildlife watchers there report one on a given day.
Same family: Lycaenidae
The closest relatives of the Bright Sunbeam that you can see in Namdapha National Park (family Lycaenidae, Gossamer-winged Butterflies) are Elbowed Pierrot (about 60%), Fluffy Tit (about 50%) and Common Tit (about 50%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Bright Sunbeam is recorded against all the insects logged in Namdapha National Park (5 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.
