Caleta roxus pothus  (Fruhstorfer, 1918)

Caleta roxus pothus ♂ Up. Caleta roxus pothus ♂ Un. Caleta roxus pothus ♀ Up. Caleta roxus pothus ♀ Un.
♂, Ranong, Thailand. ♀, Yala, Thailand.

ON : Castalius roxus pothus Fruhstorfer, 1918
OD : Tijdschr. Ent. 61:34.
TL : Sumatra ; Malay Pen.
Distribution : P.Thailand (Ranong and Southward),
W.Malaysia, Sumatra.
● ssp.roxana
Caleta roxus pothus map

Records taken from Literature

Caleta roxus pothus ; Pinratana,1981 : 38, 161, pl.6, figs.6,♂,7,♂(Un). (Trang; Yala; Narathiwat)
Caleta roxus pothus ; Ek-Amnuay,[2007] : 556, pl.252, figs.L67b♂,♂(Un),♂(Un). (Yala)
Caleta roxus pothus ; Les Day,2011-2022 : Samui Butterflies, fig.♂(Un). (Koh Samui) (accessed: 2020.10.05)
Caleta roxus pothus ; Ek-Amnuay,2012 : 574, pl.260, figs.L92b♂,♂,♂(Un). (Yala)
Caleta roxus pothus ; Kimura et al.,2014 : 167, figs.♂,♂(Un),♀,♀(Un),♀,♀(Un). (Khlong Naka; Ka Chong; Than To WF.)
Caleta roxus pothus ; Küppers & Janikorn,2020 : 146-147, figs.Abb.L-087,♂(Un),088,♂,089,♂(Un),090,♂(Un). (Phang Nga)
Caleta roxus pothus ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2023- : Butterflies of Thailand, fig. (Yala) (accessed: 2023.09.19)

Specimens Examined

Ranong : 1♂ 1♀.
JanFebMarAprMayJun JulAugSepOctNovDec

Nakhon Si Thammarat : 1♂ (photo by A.Giudici).
JanFebMarAprMayJun JulAugSepOctNovDec

Yala : 3♂ 1♀ (incl. photo).
JanFebMarAprMayJun JulAugSepOctNovDec


The butterfly is locally common in montane forests at low to moderate elevations (Alt. 200 - 500m) and is often found around streams or forest edges. Males frequently come to the banks of streams and puddles to suck water.
This taxon is very similar to ssp.roxana and the ordinary form is hardly distinguishable by the wing markings, though it tends to be slightly smaller in size. I have never seen the winter season form in this taxon, however it might be included in ssp.roxana. Further taxonomic study is needed.


Fruhstorfer, H.,1918 : Revision der Gattung Castalius auf Grund der Morphologie der Generationsorgane.
Tijdschr. Ent. 61:17-44, pls.4,5.

Caleta roxus pothus ♂ Caleta roxus pothus ♂
♂ (var.), Yala, Thailand. ♂, Yala, Thailand.
Caleta roxus pothus ♂ Caleta roxus pothus ♂
♂, Yala, Thailand. ♂, Nakhon Si Thammarat, Thailand. (photo by A.Giudici)

1999.06.24 - 2023.09.30.

A Check list of Butterflies in Indo-China, Chiefly from THAILAND, LAOS & VIETNAM. Copyright © 1996- Y.Inayoshi.