Caleta roxus
In 3 days ~30% in a week ~60%
Caleta roxus, the straight Pierrot, is a small butterfly that belongs to the lycaenids or blues family. It is found in India and Southeast Asia. Male has the upperside black with an oblique medial white band on the forewings and hindwings. The band extends from above vein 5 on the forewing and the dorsum of the hindwing. On the forewing it is extended outwards slightly above vein 3, the apex of this extension square. Underside: white suffused slightly with pale yellow, with the following black markings: a comparatively broad, even, straight band across the base of the hindwing which is continued obliquely on to and across the forewing to the middle of the costa, there it is joined by a narrow edging on the costal margin to an irregular, upper, discal, outwardly oblique, short transverse bar which is broadest on the costa; posteriorly in a line with this bar is a small, transversely elongate, oval spot in interspace 3 and below en echelon with the latter two larger coalescent spots, one above the other, in interspaces 1 and 2; terminal margin with an even transverse band, its inner edge slightly crenulate (scalloped), medially traversed by a series of minute linear... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Taman Negara National Park | 🇲🇾 Malaysia | |
| 2 | Khao Luang National Park | 🇹🇭 Thailand | |
| 3 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 4 | Gunung Leuser National Park | 🇮🇩 Indonesia | |
| 5 | Khao Yai National Park | 🇹🇭 Thailand |
With luck
About 10% of wildlife watchers report a Straight Pierrot sighting in Khao Yai National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 73rd most-seen of the 221 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.
July and September
In those months about 30% of wildlife watchers report a Straight Pierrot in Khao Yai National Park on a given day, against under 5% in December to June, the lowest months. Those are among Khao Yai National Park's wettest months, with about 300 mm of rain a month against 15 mm in December.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Straight Pierrot sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
5th of 5
Of the 5 parks where we can rate Straight Pierrot sightings, Khao Yai National Park ranks 5th at about 10%. The best odds are in Taman Negara National Park (Malaysia, about 30%), Khao Luang National Park (Thailand, about 20%) and Kaeng Krachan National Park (Thailand, about 20%).
Same family: Lycaenidae
The closest relatives of the Straight Pierrot that you can see in Khao Yai National Park (family Lycaenidae, Gossamer-winged Butterflies) are Common Pierrot (about 20%), Common Posy (about 20%) and Fluffy Tit (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Straight Pierrot is recorded against all the insects logged in Khao Yai National Park (10 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.
