Eugoa vasta van Eecke, 1920

Bayarsaikhan, Ulziijargal, Bucsek, Karol & Bae, Yang-Seop, 2018, A review of the genus Eugoa Walker (Lepidoptera, Erebidae, Arctiinae, Lithosiini) in Cambodia, with the description of a new species, Zootaxa 4403 (3), pp. 469-494 : 479-480

Eugoa vasta van Eecke, 1920 , rest. comb.

( Figs. 11, 12 , 30, 31 , 49 )

Eugoa vasta van Eecke, 1920 , Zool. Meded. 5(13): 125. TL: Java.

Philenora vasta van Eecke : Bucsek, 2016, Entomofauna 37(22): 385.

Redescription ( Figs. 11a, b, 12a, b ). Wingspan 15–16 mm in male, 16–17 mm in female. Forewing ground color yellow brownish, covered by dark brown mottling, rectangular, apex truncate, with a faintly dark discal spot and series of dark terminal spots; cilia dark. Male of hindwing pale gray, with pale gray-brown terminal area, cilia dark; female of hindwing dark brown, cilia pale orange. Male genitalia ( Figs. 30, 31 ). Uncus slender, hook-shaped, with weakly setose, almost same length with tegumen. Valvae tapering, apex rounded, with weakly setose; costa of valva with roundly angular projection basally. Saccular process tapering, apex asymmetrically bifurcated, about 2/ 3 length of valva. Juxta “X”-shaped, covered with small spines. Aedeagus stout, about 1/2 length of valva, streaked by sclerotized bands in apical, and with weakly sclerotized, irregular cornutus. Female genitalia ( Fig. 49 ). Lamella antevaginalis with broadly “U”-shaped plate. Ductus bursae short, tube-shaped, membranous. Corpus bursae ovoid, narrower in medially, heavily covered with thin spines near cervix of bursae.

Material examined. Cambodia. 1 ♂, 1 ♀, Pursat (N12˚03′46.7″, E103˚14′36.1″), 2.V.2010 (YS Bae, XV Le & DY Chae), Gen. Slide No. INU-1526; 1 ♂, 1 ♀, Cardamom (N11˚58′47″, E103˚22′22″), 29.VI.2011 (YS Bae, YD Ju, U Bayarsaikhan & HJ Lee), Gen. Slide No. INU-1580, 1683; 1 ♂, 2 ♀, Samkos (N12˚12′40″, E102˚52′13″), 23.XII.2014 (YS Bae, YD Ju, MJ Qi, U Bayarsaikhan, BS Park, SM Na, JW Kim & DJ Lee), Gen. Slide No. INU- 1579, 1582, 1584.

Distribution. Cambodia (Cardnom, Pursat, Samkos), Sumatra, Java.

Remarks. This species was transferred to Philenora author by Bucsek (2016a). But after study of its lectotypes (LECTOTYPES: male, Buitenzorg, Java, RMNH910302; female, Ambarawa, Sumatra, RMNH910301), we re-establishe it in Eugoa based on external and genital characters ( Figs. 12a, b , 31 ). Therefore, Eugoa vasta van Eecke , is newly recorded in Cambodia.

Figures

FIGURES 9–12. Adults of genus Eugoa spp. 9a. Eugoa muluana, male (INU-1550). 9b. ditto, female (INU-1549). 10a. E. bipuncta, male (INU-1552). 10b. ditto, female (INU-1375). 11a. E. vasta, male (INU-1579). 11b. ditto, female (INU-1582). 12a. ditto, male (NBC: RMNH910302]-1). 12b. ditto, female (NBC: RMNH910301]-1).

FIGURES 26–31. Male genitalia of genus Eugoa spp. 26. Eugoa formosicola n. st. (INU-1343). 27. E. arguta n. sp. (INU- 1598).28.E. muluana (INU-1550).29. E.bipuncta (INU-1352).30. E. vasta (INU-1580).31. ditto (NBC:RMNH843439]a-1; RMNH843439]b-1).

FIGURES 45–50. Female genitalia of genus Eugoa spp. 45. Eugoa formosicola n. st. (INU-1624). 46. E. bipuncta (INU- 1375).47.E. argutan. sp. (INU-1606).48.E.muluana (INU-1549). 49. E. vasta (INU-1583).50.E.latera (INU-1591).