S. Mahunka szerk.: Folia Entomologica Hungarica 50. (Budapest, 1989)

Male genitalia (Figs 1-2, 5): uncus long and slender, tegumen narrow and high, fultura inferior a rounded plate, vinculum long, pointed, Y-shaped. Valvae elongate, margins nearly parallel, apical part tapering with rounded apex. Clavus long and finely curved, harpe reduced to a small globulus. Aedeagus cylindrical with bulbous base, with a sclerotized ribbon on ventral side. Vesica tubular, arcuate, basal part with a short lamina on dorsal surface and a small, hyaline sac inside. Armature of vesica consists of a row of short, pointed cornuti placed on small prominences and a batch of shorter spiculi (about fifty* sitting on a relatively large, rounded emergence near to proximal end of vesica. The configuration of the sternite and tergite of the eighth segment is illustrated on the Figs 3-4. The new species is very close to C. diehli Dufay, 1982 both in external and genital features, the distinctive characteristics are as follows: - the vesica has a rounded basal emergence on the dorsal surface bearing a batch of cornuti which is absent in diehli (Dufay, 1982; Holloway, 1985); - the row of larger cornuti consists of essentially smaller units as in diehli (Holloway, 1985); - the eighth sternite has a rounded, slightly tapering and partly membranous apex (Fig. 4) which is wide, quadrangular in case of diehli (Holloway, 1985). Chrysopepla and diehli have an allopatric distribution as diehli is reported from Sumatra, Nias and Borneo; their habitat preference seems to be similar. The holotype was collected in the valley of a small river near to a hilly forest area. Chrysodeixis minutus Dufay, 1970 (Plate: 2) ÍBull. mens. soc. linn., Lyon 39: 101) Examined material: 1 male, Vinh Phu, Tarn Dao, 1200 m, 20.1.1986, leg. Mahunka and Oláh; 1 male, Suoi Baco stream, 12 km S of Bao Loc, 800 m, 26. X. 1988, leg. Mahunka, Oláh and Vásárhelyi. Slides Nos. 1958, 3013 Ronkay. A northern Oriental species, associated to montane forest habitats. It was recorded from the southern Himalaya, S India and Japan; new to the fauna of Vietnam. Chrysodeixis illuminata (Robinson, 1968) (Entomologist's Ree. J. Var., 80: 250 - Plusia) Examined material: two males. Vinh Phu, Tarn Dao, 1200 m, 20.1. 1986, leg. Mahunka and Oláh. A widespread Indo-Australian species, connected to humid forest habitats; new to the fauna of Vietnam. Chrysodeixis eriosoma (Doubleday, 1843) (in Dieffenbach: Trav. New Zealand, 2: 285 - Plusia) Examined material: 29 males, 31 females from various localities of N and S Vietnam; it was represented nearly in all of the materials collected by light. An eastern Palaearctic and Indo-Australian species, an agricultural pest. Chrysodeixis acuta (Walker, 1857) (List specimens lepid. - Insects Colin. Br. Mus., 12: 922 - Plusia) Examined material: 1 male, Ha Noi, Quang Ba, Ho Tay, 8. V. 1987; 2 males, Prov. Vinh Yen, Tham Dao, 840 m, 9. V. 1987; 1 male from same locality, 10. V. 1987; 1 male, 1 female, Prov. Bac Thai, Thai Nguyen, 40 m, 23. V. 1987; 1 male, 1 female. Da Lat, 1500 m, 14.X. 1988; 1 male from same locality, 17. X. 1988; 2 males from same locality, 19.X. 1988; 1 female, Due me waterfall, 15 km S of Bao Loc, 700 m, 23. X. 1988; 1 male, Suoi Baco stream, 12 km S of Bao Loc, 800 m, 26. X. 1988. Figs 12-21. 12-16 - Ctenoplusia (A.) microptera sp. n.; paratypes (12 - No. 634, 13 -No.92, 14 - No. 176, 15 -No. 174, 16 - No. 3008). 17-21 - C. (A. ) agnata Staudinger (17 - No. 99, Korea, 18 - No. 97, Korea, 19 - No. 3007, Vietnam, 20 - No. 2908, Vietnam, 21 - No. 93, Korea)