Euthalia mahadeva binghamii  de Nicéville,1895

Euthalia mahadeva binghamii ♂ Up. Euthalia mahadeva binghamii ♂ Un. Euthalia mahadeva binghamii ♀ Up. Euthalia mahadeva binghamii ♀ Un.
♂, Mae Hong Son, Thailand. ♀, Mae Hong Son, Thailand.
Euthalia mahadeva binghamii ♂ Up. Euthalia mahadeva binghamii ♂ Un. Euthalia mahadeva binghamii ♀ Up. Euthalia mahadeva binghamii ♀ Un.
♂, Chiang Mai, Thailand. ♀, Mae Hong Son, Thailand.
Euthalia mahadeva binghamii ♂ Up. Euthalia mahadeva binghamii ♂ Un. Euthalia mahadeva binghamii ♀ Up. Euthalia mahadeva binghamii ♀ Un.
♂, Chiang Mai, Thailand. (photo by T.Yokochi) ♀, Mae Hong Son, Thailand.
Euthalia mahadeva binghamii ♂ Up. Euthalia mahadeva binghamii ♂ Un. Euthalia mahadeva binghamii ♀ Up. Euthalia mahadeva binghamii ♀ Un.
♂, Mae Hong Son, Thailand. ♀, Mae Hong Son, Thailand.
Euthalia mahadeva binghamii ♂ Up. Euthalia mahadeva binghamii ♂ Un. Euthalia mahadeva binghamii ♀ Up. Euthalia mahadeva binghamii ♀ Un.
♂, Tak, Thailand. ♀, Mae Hong Son, Thailand.

ON : Euthalia binghamii de Nicéville,1895
OD : J. Bombay Nat. Hist. Soc. 9(3):264-266, pl.N, fig.7,♂. [partim]
TL : Daunat Range, Tenasserim, Burma. (♂, NZC)
Distribution : Myanmar (Tenasserim), N. to W.Thailand.

● ssp.binghamii
ssp.zichrina
Euthalia mahadeva binghamii map

Type Material Information

Type ♂, Daunat Range, Tenasserim (NZC) ; Sheela et al.,2019 : 209, figs.♂,♂(Un). [partim]


Records taken from Literature

[ THAILAND ]
Euthalia eriphylae eriphylae ; Ek-Amnuay,2012 : 448, pl.198, figs.N311b♀,♀(Un). (Chiang Mai; Mae Hong Son)
Euthalia mahadeva binghamii ; Ek-Amnuay,2012 : 450, pl.198, figs.N312a♂,♂(Un). (Umphang) (in part)
Euthalia eriphylae eriphylae ; Kimura et al.,2016 : 105, figs.♀,♀(Un). (Chiang Dao)
Euthalia mahadeva binghamii ; Kimura et al.,2016 : 106. (by literature)


Specimens Examined

[ THAILAND ]
Mae Hong Son : 3♂ 6♀ (incl.photo).
JanFebMarAprMayJun JulAugSepOctNovDec

Chiang Mai : 5♂ 3♀ (incl.photo & photo by A.Giudici).
JanFebMarAprMayJun JulAugSepOctNovDec

Tak : 1♂.
JanFebMarAprMayJun JulAugSepOctNovDec


Notes
The butterfly is locally not rare in montane forest at moderate elevations (alt.550m - 1000m).
The classification of the three species, including mahadeva, eriphylae and merta, has been confusing from the past to the present. The reason is the markings of each species are very similar, there is no difference in the male genitalia, and they are all uncommon that it was difficult to collect specimens to compare them.
de Nicéville,1895 described Euthalia binghamii based on a single male and five females from Tenasserim. Moore,1898, in Lep. Indica, found the female type specimen of binghami illustrated in the original description was Euthalia merta. The female type specimen was shown in Sheela et al.,2019 and was confirmed to be definitely merta.
Since then, the identity of the female of binghamii was unknown. In N.Thailand, from Chiang Mai to Mae Hong Son, only binghamii is found and eriphylae is never found. Therefore I realized that the male and female in the photos above, found in this area, are indeed a pair of binghamii. I also noticed the female of Euthalia eriphylae eriphylae shown in D'Abrera,1983 is a female of binghamii. Furthermore an individual thought to be a true female of Euthalia eriphylae eriphylae was found in W.Thailand.
Both binghamii and eriphylae are found sympatrically from C.Myanmar to W.Thailand, which may have caused the confusion. In any case, the relationship between mahadeva and eriphylae needs further study, including DNA analysis.

Literature

de Nicéville, C.L.A.,1895 : On new and little-known Butterflies from the Indo-Malayan Region.
J. Bombay nat. Hist. Soc. 9(3):259-321, pls.N-Q.

Moore, F.,1898 : Lepidoptera Indica. Rhopalocera. Family Nymphalidae. Sub-family Nymphalinae (continued), Groups Potamina, Euthalina, Limenitina Lepidoptera Indica 3
(30):113-128, pl.231-238 ; (31):129-144, pl.239-246.
London, L.Reeve and Co.

Bingham, C.T.,1905 : The Fauna of British India, including Ceylon and Burma. Butterflies 1.
London. xxii+511pp, pls.1-10.

Tytler, H.,1940 : Notes on Some New and Interesting Butterflies chiefly from Burma. Part.2.
J. Bombay nat. Hist. Soc. 42:109-123.

D'Abrera, B.,1983 : Butterflies of the Oriental Region Part 2. Nymphalidae, Satyridae & Amathusidae
Hill House. Melbourne.

Euthalia mahadeva binghamii ♂ Euthalia mahadeva binghamii ♀
♂, Chiang Mai, Thailand. (photo by A.Giudici) ♀, Mae Hong Son, Thailand.
Euthalia mahadeva binghamii ♀ Euthalia mahadeva binghamii ♀
♀, Chiang Mai, Thailand.

2010.04.15 - 2021.09.30.

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