Enispe euthymius sychaeus  Brooks, 1949

Enispe euthymius sychaeus ♂ Up. Enispe euthymius sychaeus ♂ Un. Enispe euthymius sychaeus ♂ Up. Enispe euthymius sychaeus ♂ Un.
♂ (wsf), Phong Saly, Laos. ♂ (wsf), Phong Saly, Laos.
Enispe euthymius sychaeus ♂ Up. Enispe euthymius sychaeus ♂ Un. Enispe euthymius sychaeus ♂ Up. Enispe euthymius sychaeus ♂ Un.
♂ (dsf), Bolikhamxai, Laos. ♂ (wsf), Phong Saly, Laos.
Enispe euthymius sychaeus ♂ Up. Enispe euthymius sychaeus ♂ Un. Enispe euthymius sychaeus ♀ Up. Enispe euthymius sychaeus ♀ Un.
♂ (dsf), Chiang Mai, Thailand. ♀ (dsf), Chiang Mai, Thailand.
Enispe euthymius sychaeus ♂ Up. Enispe euthymius sychaeus ♂ Un. Enispe euthymius sychaeus ♂ Up. Enispe euthymius sychaeus ♂ Un.
♂ (dsf), Chiang Mai, Thailand. ♂ (wsf), Chiang Mai, Thailand.

ON : Enispe euthymius sychaeus Brooks, 1949
OD : Entomologist 82:259.
TL : Chapa, 'Cochin China' [Tonkin]. (NHML)
Distribution : Myanmar, Thailand, Laos,
N. & C.Vietnam, Yunnan.
● ssp.sychaeus
? unclear (E. euthymius or E. duranius)
ssp.congi
ssp.'congi' ??
Enispe euthymius sychaeus map

Records taken from Literature

[ THAILAND ]
Enispe euthymius euthymius f.tesselata ; Godfrey,1930 : 263. (Prae: Me Song forest)
Enispe intermedia intermedia ; Pinratana,1983 : 60, 64, pl.48, fig.29,♂. (Chiang Mai; 'Chaiyaphum') (in part)
Enispe intermedia intermedia ; Ek-Amnuay,[2007] : 344, pl.147, figs.A32a♂,♂(Un),♀. (Doi Pha Hom Pok; Wiang Pa Pao)
Enispe euthymius euthymius ; Inayoshi,2011 - 2023 : Butterflies in Indo-China, figs.♂,♂(Un),♀,♀(Un),♂,♂(Un),♂,♂(Un),♂,♂(Un),♂,♂(Un). (Chiang Rai; Chiang Mai; Lampang) (30.Jun.2023 last update. 31.Aug.2023 changed.)
Enispe duranius intermedia ; Ek-Amnuay,2012 : 348, pl.147, figs.N179a♂,♂(Un),♀. (Doi Pha Hom Pok; Wian Pa Pao)
Enispe euthymius euthymius ; Kimura et al.,2016 : 154, figs.♂,♂(Un),♂,♂(Un),♀,♀(Un). (Doi Par Hom Pok; Doi Chiang Dao; Doi Suthep; Ban Salok)
'Enispe euthymius euthymius ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2023- : Butterflies of Thailand, figs. (Chiang Mai; Phetchabun) (accessed: 2023.06.03)'

[ LAOS ]
Enispe euthymius f.tesselata [sic] ; Dubois & Vitalis,1924 : 34. (Muong-Om; Luang-Prabang; Muong-You; Tam-Sa; Ban Thao-Phan; Pou-So-Ko; Ban-Na-Mone)
Enispe euthymius corbeti ; Motono & Negishi,1989 : 67, pl.93, figs.7,♂,8,♂(Un). (Nam Moh)
Enispe euthymius sychaeus ; Osada, Uémura & Uehara,1999 : 212, pl.102, fig.♂. (Lak Sao)
Enispe euthymius sychaeus ; Uémura,2005 : 5, fig.29,map.
Enispe euthymius sychaeus ; Nakamura & Wakahara,2012 : 50.
Enispe euthymius sychaeus ; Nakamura,2021 : 9,13, figs.23,♂,23v♂(Un),23a(♂,genitalia). (Bolikhamxai: Nahin)
Enispe euthymius sychaeus ; Onodera,2022 : 66, pl.196, figs.♂,♂(Un),♂,♂(Un). (Xiengkhouang: Tha; Thna)

[ VIETNAM ]
Enispe euthymius f.tesselata [sic] ; Dubois & Vitalis,1924 : 34. (Tonkin) (in part)
Enispe duranius ; Lemée,1950 : 9. (Hagiang)
Enispe euthymius tesselatus ; Metaye,1957 : 100. (N / C)
Enispe euthymius ; Monastyrskii et al.,2006 : 40. (Thua Thien Hue: Bach Ma)
Enispe euthymius sychaeus ; Monastyrskii,2011 : 122-123, pl.30, fig.2(HT,♂). (N: Hoang Lien; Van Ban; Ba Be / C: Xuang Lien; Pu Hoat; Pu Mat; Huong Son)
Enispe euthymius sychaeus ; Monastyrskii & Devyatkin,2015 : 30. (N / C: to 'Gia Lai')
Enispe euthymius sychaeus ; Nakamura,2021 : 13, figs.24,♂,24v♂(Un),24a(♂,genitalia). (N: Ha Giang)


Specimens Examined

[ THAILAND ]
Chiang Rai : 1♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Chiang Mai (excluding Omkoi dist.) : 7♂ 1♀.
JanFebMarAprMayJun JulAugSepOctNovDec

Lampang : 5♂.
JanFebMarAprMayJun JulAugSepOctNovDec


[ LAOS ]
Luang Phabang : 1♂ (photo by H.Onodera).
JanFebMarAprMayJun JulAugSepOctNovDec

Phong Saly : 3♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Bolikhamxai : 1♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Oudomxai : 1♂ (photo by H.Onodera).
JanFebMarAprMayJun JulAugSepOctNovDec

Xieng Khouang : 2♂ (photo by H.Onodera).
JanFebMarAprMayJun JulAugSepOctNovDec


Notes

The butterfly is not rare in montane forests at moderate to high elevations (Alt. 1000 - 1800m).
It occurs with Enispe duranius in some parts of Myanmar and Laos [Nakamura (2021:9)]. Hitherto no sympatric habitat has been found in Thailand, though I think it should be found in the future.
This species is only distinguishable from Enispe duranius by examination of male genitalia. Therefore, records that have not had male genitalia examined cannot be used. There are several records from Chaiyaphum and Phetchabun in central Thailand; but since the male genitalia have not been examined, it is not certain whether they are this species or Enispe duranius. Further taxonomic and distributional studies are needed.
The populations from Yunnan to N.Thailand are much closer to ssp.sychaeus than to the nominotypical subspecies, as Huang (2023:103-104) pointed out.


Literature

Brooks, C.J.,1949 : New subspecies in the Genera Faunis, Aemona, Stichophthalma, and Enispe, with Revisional Notes (Lep. Amathusiidae).
Entomologist 85:256-259.

Nakamura, N.,2021 :
Notes on the butterflies of Laos (XII): New findings on Amathusiini (Morphinae: Nymphalidae) including description of a new subspecies of Faunis excelsa (Fruhstorfer, 1901)
Butterflies 85:4-14.

Huang, H.,2023 : New or little known butterflies from China - 5 (Lepidoptera: Papilionidae, Pieridae, Nymphalidae, Lycaenidae et Hesperiidae)
Neue Ent. Nachr. 82:93-214.


Enispe euthymius sychaeus ♂ Enispe euthymius sychaeus ♂
♂, Chiang Mai, Thailand. ♂, Chiang Mai, Thailand.
Enispe euthymius sychaeus ♂ Enispe euthymius sychaeus ♂
♂, Lampang, Thailand.

2007.10.10 - 2023.08.31.

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