Cyana effracta (Walker, 1854)

Bayarsaikhan, Ulziijargal & Bae, Yang-Seop, 2016, A review of the genus Cyana Walker, 1854 (Lepidoptera, Erebidae, Arctiinae) from Cambodia, with description of new species, Zootaxa 4114 (4), pp. 447-463 : 450-451

Cyana effracta (Walker, 1854)

(Pl. 1: 2a, 2b; 3: 2; 5: 2)

Barsine effracta Walker, 1854 , List Spec. Lepid. Insects Colln Br. Mus. 2: 546. TL: Nepal.

Bizone effracta Walker : Cotes & Swinhoe, 1887, Cat. Moths Ind. 2: 107, No. 663.

Cyana effracta Walker : Hampson, 1894, Moths Ind. 2: 57.

Chionaema effracta Walker : Hampson, 1900, Cat. Lep. Phal. Br. Mus. 2: 298, 300–301, fig. 217.

Chionaema pusilla Wileman, 1910 , Entomologist 43: 177. TL: Kanshirei.

Chionaema effracta Walker : Hampson, 1914, Cat. Lep. Phal. Br. Mus. (Suppl.) 1: 617.

Chionaema effracta Walker : Draudt, 1914, Macrolep. World 10: 169, pl. 16g.

Chionaema effracta sumatrana van Eecke, 1927 , Zool. Meded. 10: 104–105 (van Eecke, 1926, Zool. Meded. 9: pl. 4, figs. 12a– b). TL: Sumatra, Fort de Kock.

Chionaema effracta f. karenkonis Matsumura: Inoue, 1988, Tyô to Ga, 39 (2): 99–118. TL: Formosa, Karenko.

Chionaema effracta Walker : Fang, 2000, Fauna Sin., Ins. 19: 156–157, pl. 4: 5.

Cyana effracta Walker : Inoue, 1988, Tyo to Ga 39 (2): 113.

Cyana effracta Walker : Holloway, 2001, Moths of Borneo 7: 339, pl. 1, figs. 137, 146.

Cyana effracta Walker : Černy & Pinratana, 2009, Moths of Thailand 6: 54, pl. 11: 110a, 110b.

Cyana effracta Walker : Bucsek, 2012, Erebidae , Arctiinae ( Lithosiini , Arctiini ) of Malay Peninsula-Malaysia: 105, pl. 18: 260, 260a.

Diagnosis. Wingspan ♂ 18–25 mm, ♀ 22–35 mm. This species is similar to C. angkorensis sp. n., but can be distinguished from it by the following characters: size larger (♂ 25 mm, ♀ 35), ground color of forewing pure white, and hindwing pure white, with pale brown antemedial and subterminal lines. In C. angkorensis sp. n., smaller size (♂ 22 mm, ♀ 28 mm), ground color of forewing sordid white, and hindwing fuscous whole of upperside.

The two species differs in characters of male genitalia: in C. effracta , uncus arrowhead-shaped, 0.5 times shorter than tegumen, apex of valvae rounded, with short, roundly angular process in below apex and without angular process on the harpe, distal end of aedeagus sclerotized, without apical spine and vesica with one group of short spines and one group of stout spines, which almost same length with previously mentioned short spines and with weakly scobinated area; in C. angkorensis sp. n., uncus slender, 1.5 times longer than tegumen, apex of valvae triangular, with apical gap and one angular, sclerotized process on the harpe towards the apex, distal end of aedeagus sclerotized, with two apical spines and vesica with one group of short spines and one group of long spines, which are more than 8 times longer than previously mentioned short spines and lacking scobinated area.

It is also differs in characters of female genitalia: in C. effracta , ductus bursae not sclerotized, corpus bursae with a more elongate signum (2 times longer than C. angkorensis ) in posterior half of bursae not covered with weak spines; in C. angkorensis sp. n., ductus bursae strongly sclerotized, corpus bursae with a large, coffee-bean shaped signum in posterior half of bursae covered with weak spines.

Material examined. 2♀, Cambodia, Samkos (N12˚12′39″, E102˚53′55″), 17–20.II.2012 (Y.S. Bae et al.); 1♀, Cambodia, Samkos (N12˚12′48.1″, E102˚54′12.5″), 6.II.2015 (Y.S. Bae et al.).

Distribution. Cambodia (Samkos), Myanmar, Thailand, Vietnam, Laos, peninsular Malaysia, Sumatra, Borneo, N.E. Himalaya, Nepal, China, Taiwan.

Remarks. So far only females has been collected in Cambodia, therefore we have used a male collected from Thailand (Coll. Bae. YS). This species was reported from Cambodia by Bucsek (2012).