♂ (dsf), Chiang Mai, Thailand.		♀ (dsf), Chiang Mai, Thailand.
♂ (dsf), Chiang Mai, Thailand.		♀ (dsf), Chiang Mai, Thailand.
♂ (dsf), Nan, Thailand.		♀ (dsf), Nan, Thailand.
♂ (wsf), Nan, Thailand.		♀ (wsf), Vinh Phuc, Vietnam.

ON : Neurosigma nonius Nicéville, 1896 OD : Ann. Mag. nat. Hist. (6)17:396. TL : Karenni, "Burma" [Myanmar]. (NZC) Distribution : Myanmar, Thailand, N. Laos, N. Vietnam. ● ssp.nonius ● ssp.dalatica

Neurosigma siva orientale Miyata & Hanafusa, 1992 : Futao 10:14, pl.2, figs.1(HT,♂),2(HT,♂Un). TL. Tam Dao, N. Vietnam.

nonius : Type ♂, Mar.-Apr.1890, East Pegu. W.Doherty (NZC) ; Sheela et al.,2019 : 266, figs.♂,♂(Un).
orientale :
Holotype ♂, Tam Dao, N.Vietnam, 7.May.1992. T.Miyata leg. (in coll. T.Miyata)
Paratypes ; 14♂, Tam Dao, N.Vietnam. (in coll. T.Miyata ; H.Hanafusa)

[ THAILAND ]
Neurosigma doubleday doubleday ; Godfrey,1927 : 124. (N)
Neurosigma doubleday doubleday ; Godfrey,1930 : 288. (Chiang Mai: Doi Suthep)
Neurosigma doubleday nonius ; Pinratana,1979 : 66, figs.N115,♂,♂(Un). (Chiang Mai; 'Yala' [loc.err.])
Neurosigma siva nonius ; Pinratana & Eliot,1996 : 66, pl.42, fig.119,♂. (Chiang Mai; Loei)
Neurosigma siva nonius ; Ek-Amnuay,[2007] : 416, pl.182, figs.N124,♂,♂(Un),♀. (Omkoi)
Neurosigma siva nonius ; Ek-Amnuay,2012 : 426, pl.186, figs.N290,♂,♂(Un),♀. (Doi Suthep; Omkoi)
Neurosigma siva nonius ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs. (Chiang Mai; Kamphaeng Phet) (accessed: 2024.05.13)
Neurosigma siva nonius ; Kimura et al.,2016 : 95, figs.♂,♂(Un),♀,♀(Un). (Doi Pha Hom Pok; Doi Suthep; Doi Inthanon)

[ LAOS ]
Neurosigma doubledayi f. nonius ; Dubois & Vitalis,1924 : 42. (Sala-Tong-King, Nam-Tie)
Neurosigma siva nonius ; Osada, Uémura & Uehara,1999 : 207, pl.62, fig.♂. (Oudomxay) (in part)
Neurosigma siva nonius ; Nakamura & Wakahara,2012 : 46.
Neurosigma siva nonius ; Onodera,2022 : 41, pl.118, figs.♂,♂(Un). (Oudomxai)

[ VIETNAM ]
Neurosigma siva orientale Miyata & Hanafusa,1992 : Futao 10;14, pl.2, figs.1(HT,♂),2(HT,♂Un). (N: Tam Dao)
Neurosigma siva nonius ; Monastyrskii & Devyatkin,2015 : 39. (N) (in part)
Neurosigma siva nonius ; Monastyrskii,2019 : 4(2):99-100. (N: Dong Phuc; Tam Dao; Ba Vi) (in part)

[ THAILAND ]
Chiang Rai : 4♂ (incl. photo).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chiang Mai : 12♂ 2♀ (incl. photo).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Nan : 4♂ 1♀ (incl. photo).

Jan

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Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Kamphaeng Phet : 1♂ (photo by A.Giudici).

Jan

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Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chaiyaphum : 1♀ (photo).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

[ VIETNAM ]
Vinh Phuc : 1♀.

Jan

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Dec

The butterfly is locally common in montane forests at moderate to high elevations (Alt. 900 - 1800m) and is frequently found at hilltops. Males are territorial on shrubs or trees.
I suspect this species mimics Achelura sp. (hai?) (Zygaenidae) which occurs sympatrically.

Nicéville, L. de,1896 : Description of a new Nymphaline Butterfly from Burma.
Ann. Mag. nat. Hist. (6)17:396.

Miyata, T. & Hanafusa, H.,1992 : A new subspecies of Neurosigma siva (Westwood) from Vietnam. (Lepidoptera: Nymphalidae)
Futao 10:14-15, pl.2.

♂ (dsf), Chiang Mai, Thailand.	♀ (dsf), Chaiyaphum, Thailand.
♂ (wsf), Nan, Thailand.
♂ (dsf), Chiang Mai, Thailand.	♂ (dsf, territorial behavior), Chiang Rai, Thailand.
♂ (dsf), Kamphaeng Phet, Thailand. (photo by A.Giudici)	♂ (dsf), Chiang Mai, Thailand.

2007.03.20 - 2024.05.31.