Eurema blanda silhetana  (Wallace, 1867)

Eurema blanda silhetana ♂ Up. Eurema blanda silhetana ♂ Un. Eurema blanda silhetana ♀ Up. Eurema blanda silhetana ♀ Un.
♂ (dsf), Nan, Thailand. ♀ (dsf), Nan, Thailand.
Eurema blanda silhetana ♂ Up. Eurema blanda silhetana ♂ Un. Eurema blanda silhetana ♀ Up. Eurema blanda silhetana ♀ Un.
♂ (ws), Chiang Mai, Thailand. ♀ (wsf), Nan, Thailand.
Eurema blanda silhetana ♂ Up. Eurema blanda silhetana ♂ Un. Eurema blanda silhetana ♂ Up. Eurema blanda silhetana ♂ Un.
♂ (dsf), Ranong, Thailand. ♂ (ds), Nakhon Si Thammarat, Thailand.
Eurema blanda silhetana ♂ Up. Eurema blanda silhetana ♂ Un. Eurema blanda silhetana ♂ Up. Eurema blanda silhetana ♂ Un.
♂ (dsf), Pattani, Thailand. ♂ (ds), Pattani, Thailand.

ON : Terias silhetana Wallace, 1867
OD : Trans. ent. Soc. Lond. (3)4(3):324.
TL : Silhet. (♂, NHML)
Distribution : Pakistan, Nepal, India to Myanmar,
Thailand, Laos, Cambodia, Vietnam.
Eurema blanda silhetana map

Type Material Information

Lectotype ♂, Silhet, N.E.India. designated by Yata,1993. (NHML) ; Yata,1994 : pl.14, figs.5,♂(dsf), 6,♂(dsf,Un).


Records taken from Literature

[ THAILAND ]
Terias blanda davidsoni ; Fruhstorfer,1910 : 169. (Siam)
Terias blanda davidsoni ; Godfrey,1916 : 116.
Terias blanda davidsoni ; Godfrey,1927 : 120. (N)
Terias blanda davidsoni ; Godfrey,1930 : 230. (all over)
Eurema blanda silhetana ; Pinratana,1983 : 28, pl.22, figs.50a♂,♀,♀(Un). (Chiang Mai; Loei; Chonburi; Chanthaburi; Nakhon Nayok; Tak; Nakhon Ratchasima; Kamphaeng Phet; Prachuap Khiri Khan)
Eurema blanda snelleni ; Pinratana,1983 : 28, pl.22, fig.50b♂. (Ranong; Phuket; Trang; Yala)
Eurema blanda silhetana ; Yata,1994 : 80, pl.15, figs1,2. (Chiang Mai: Doi Suthep; Chiang Mai; Nakhon Nayok: Khao Yai; Yala: Yala)
Eurema blanda silhetana ; Yamaguchi & Aoki,2000 : 252, fig.56,♂. (Mukdahan: Phu Mu; Ban Naudom; Phu Shang)
Eurema blanda silhetana ; Yamaguchi & Aoki,2002 : 19. (Mukdahan: Ban Na Lak; Ban Gok Tum)
Eurema blanda silhetana ; Yamaguchi, Aoki & Akiyama,2005 : 47. (Ubon Ratchathani: Nam Tok Soi Sawan)
Eurema blanda silhetana ; Katsuyama et al.,2005 : 65, fig.56,♂. (Umphang: Tha Sai ; Umphang)
Eurema blanda silhetana ; Katsuyama et al.,2006 : 46, [fig.34,♂,Eurema hecabe]. (Nan: Ban Nam Poon; Nan)
Eurema blanda blanda ; Ek-Amnuay,[2007] : 176, pl.60, figs.Pi54a♂,♂(Un),♂(Un),♂,♀,♀(Un). ("Trat" [loc.err.], Pong Pong WF.)
Eurema blanda silhetana ; Ek-Amnuay,[2007] : 176, pl.60, figs.Pi54b♂,♂,♂(Un),♂,♀,♀(Un),♂(Un),♂,♂(Un). (Tham Than Lod; Sakae Rat, Umphang; Nan: Doi Phu Kha)
Eurema blanda silhetana ; Jeratthitikul et al.,2009 : 10, figs.4A♂,B♀. (Chiang Mai: Chiang Mai; Doi Pui; Doi Suthep; Huay Hong Krai; Maejo; Hayu Jo; San Sai; Maehophra; Maeheak; Chom Thong; Chiang Rai: Chiang Dao; Mae Hong Son: Mae Hong Son; Pang Ma Pa; Tak: Sam Ngao, Huay Yao; Nan: Na Noi; Phrae: Pae Muang Pe; Singburi; Bangkok: Bang Khen; Kanchanaburi: Kanchanaburi; Thong Pha Phum; Ratchaburi; Nakhon Pathom; Phetchabun: Nam Nao; Chaiyaphum: Phu Khiao; Nakhon Ratchasima: Sakaeratch; Saraburi; Khon Kaen; Trat: Ko Kood; Son)
Eurema blanda blanda ; Les Day,2011-2022 : Samui Butterflies, fig. (Koh Samui) (accessed: 2022.11.30)
Eurema blanda silhetana ; Kimura et al.,2011 : 145, figs.♂,♂(Un),♂,♂(Un),♀,♀(Un),♀,♀(Un). (Doi Ankaan; Chiang Dao; Doi Suthep; Phu Kradung; Phu Khiewo; Khao Yai; Nakohn Nayork; Bang Phra; Khao Khiewo; Kao Soi Dao; Doi Musso; Kaen Chai; Erawan WF; Khlong Naka)
Eurema blanda blanda ; Kimura et al.,2011 : 145, figs.♂,♂(Un),♂,♂(Un),♀,♀(Un). (Ka Chong; Haadjai; Than To WF.)
Eurema blanda blanda ; Ek-Amnuay,2012 : 176, pl.60, figs.Pi54.♂,♂(Un),♂,♂(Un),♂,♀,♀(Un),♂,♂,♂(Un),♂,♀,♀(Un),♂(Un),♂,♂(Un). (Tham Than Lod; Sakaerat; Umphang; Doi Phu Kha; Trat)
Eurema simulatrix sarinoides ; Ek-Amnuay,2012 : pl.54, figs.Pi53b♂(bottom,left),♂(bottom,center),♂(Un,bottom,right). (in part)
Eurema blanda silhetana ; Okamoto et al.,2013 : 6. (Kanchanaburi: Mae Klong Station)
Eurema blanda sihetana [sic] ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs. (Saraburi; Trat) (accessed: 2022.11.30)
Eurema blanda blanda ; Küppers & Janikorn,2017 : 205-206, figs.Abb.Pi-107-108,202-223. (Phang Nga)
Eurema blanda silhetana ; Chaianunporn & Chaianunporn,2019 : 87. (Chaiyaphum: Chulabhorn Dam)

[ LAOS ]
Eurema blanda silhetana ; Motono & Negishi,1989 : 51, pl.29, figs.5,♂,6,♂(Un). (Tha Ngone; Luang Prabang; Vang Vieng)
Eurema blanda silhetana ; Osada, Uémura & Uehara,1999 : 203, pl.41, figs.♂(dsf),♂(dsf,Un),♂,♂(Un),♀,♀. (Thabok; Xiang Khouang)
Eurema blanda silhetana ; Onodera,2009b : 38,39,40. (Vientiane: Vang Vieng; Bolikhamxai: Thabok; Khammouan: Thakhek)
Eurema blanda silhetana ; Nakamura & Wakahara,2012 : 43.
Eurema blanda silhetana ; Onodera,2022 : pl.76, figs.♂,♂(Un),♀,♀(Un), text:21. (Bolikhamxai; Xiengkhouang)

[ CAMBODIA ]
Eurema blanda ; Onodera,2008 : 57,60. (Mondolkiri: Bousra; Romonea)
Eurema blanda silhetana ; Monastyrskii et al.,2011 : 128. (Phnom Samkos W.S.)

[ VIETNAM ]
Terias blanda davidsoni ; Fruhstorfer,1910 : 169. (Tonkin / Annam)
Terias blanda davidsoni ; Godfrey,1919 : 465. (S: Daban)
Terias blanda davidsoni ; Metaye,1957 : 87. (N / C / S)
Eurema blanda silhetana ; Shirôzu & Yata,1973 : 126-127, pl.5, figs.5,♂,6,♂(Un),7,♀,8,♀(Un). (B: Trang Bom; Cap St. Jacques; Dinh Quan; Blao; Bobla; Dalat)
Eurema blanda silhetana ; Yata,1994 : 80. (S: Bobla; Trang Bom; Dinh Quan; Cap St.Jacques)
Eurema blanda silhetana ; Ikeda et al.,1998 : 19, figs.6:6,♂,7,♂(Un),10:28(♂genitalia). (Cuc Phuong)
Eurema blanda silhetana ; Luong et al.,2004 : 3, 35, figs.♂,♂(Un),♀,♀(Un). (Cuc Phuong)
Eurema blanda ; Monastyrskii et al.,2006 : 39. (Thua Thien Hue: Nam Dong; A Luoi; Huong Thuy; Phong Dien; Bach Ma)
Eurema blanda silhetana ; Miyazaki, Saito & Saito,2006 : 14, figs.Pi-34,♂,♀. (Lam Dong: Dambri)
Eurema blanda silhetana ; Nihira,2009 : 98. (Phu Quoc)
Eurema blanda silhetana ; Monastyrskii & Devyatkin,2015 : 18. (N / C / S)
Eurema blanda silhetana ; Yokochi et al.,2015 : 39. (Khanh Hoa: Hon Ba)
Eurema blanda silhetana ; Saito et al.,2017 ; 77. (S: Nui Cam)


Specimens Examined

[ THAILAND ]
Mae Hong Son : 2♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Chiang Mai : 22♂ 4♀ (incl.photo).
JanFebMarAprMayJun JulAugSepOctNovDec

Lampang : 2♂ 2♀ (incl.photo).
JanFebMarAprMayJun JulAugSepOctNovDec

Nan : 6♂ 3♀.
JanFebMarAprMayJun JulAugSepOctNovDec

Chaiyaphum : 1♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Tak : 5♂ 1♀.
JanFebMarAprMayJun JulAugSepOctNovDec

Chanthaburi : 4♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Trat : 1♀.
JanFebMarAprMayJun JulAugSepOctNovDec

Ranong : 10♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Surat Thani (Koh Tao) : 3♂ 1♀ (photo by P.Kosierb).
JanFebMarAprMayJun JulAugSepOctNovDec

Nakhon Si Thammarat : 2♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Pattani : 3♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Yala : 1♂ (photo by S.Atdhabhan).
JanFebMarAprMayJun JulAugSepOctNovDec

Narathiwat : 1♂.
JanFebMarAprMayJun JulAugSepOctNovDec


[ LAOS ]
Phong Saly : 1♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Vientiane : 1♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Bolikhamxai : 1♂ 5♀. (incl.photo by K.Phongpiyamit)
JanFebMarAprMayJun JulAugSepOctNovDec

Sekong : 2♂.
JanFebMarAprMayJun JulAugSepOctNovDec


[ VIETNAM ]
Lam Dong : 7♂ 3♀.
JanFebMarAprMayJun JulAugSepOctNovDec


Notes

The butterfly is very common in secondary and montane forest at low to moderate elevations (Alt. 30 - 1300m). Both sexes visit flowers and males frequently come to the banks of streams and puddles to suck water.
This taxon has remarkable seasonable and individual variation. Although some authors treat the population from S.Thailand as the nominotypical subspecies, after review, all populations from Thailand are considered to be included in ssp.silhetana.


Literature

Wallace, A.R.,1867 : On the Pieridae of the Indian and Australian Regions.
Trans. ent. Soc. Lond. (3)4(3):301-416, pls.6-9.

Shirôzu, T. & Yata, O.,1973 : The Genus Eurema of South Viet-Nam and Cambodia
Sieboldia 4(3):121-135.

Yata, O.,1994 : A Revision of the Old World Species of the Genus Eurema Hübner (Lepidoptera, Pieridae).
Part 4. Description of the hecabe group (part)
Bull. Kitakyushu Mus. Nat. Hist. 13:59-105, pl.5-35.


Eurema blanda silhetana ♂ Eurema blanda silhetana ♂
♂, Chiang Mai, Thailand. ♂, Yala, Thailand. (photo by S.Atdhabhan)
Eurema blanda silhetana ♀ Eurema blanda silhetana ♀
♀ (laying eggs), Bolikhamxai, Laos. (photo by K.Phongpiyamit)
Eurema blanda silhetana pupae Eurema blanda silhetana ♀
Pupae and ♀ with ♂ (emerged female and waiting males), Lampang, Thailand.
Eurema blanda silhetana ♂ Eurema blanda silhetana ♀
♂, Chiang Mai, Thailand. ♀, Chiang Mai, Thailand.

1996.10.31 - 2022.12.26.

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