Chinasa costalis bicoloriceps ( Strand, 1916 ) Dubatolov & Volynkin & Kishida, 2018

Dubatolov, Vladimir V., Volynkin, Anton V. & Kishida, Yasunori, 2018, Review of the Prabhasa Moore, 1878 genus-group (Lepidoptera, Erebidae, Arctiinae), Zootaxa 4407 (3), pp. 383-400 : 393

Chinasa costalis bicoloriceps ( Strand, 1916) , comb. nov.

( Figs. 20–21 , 34–43 )

Eilema venosa bicoloriceps Strand, 1916 , Archiv für Naturgeschichte, 1916 (A3): 114 (Type locality: “[Formosa] Suisharyo” [TaiWan]).

Eilema venosa bicoloriceps: Strand 1922: 592 ; Inoue & Kishida 1992: 166.

Material examined. TAIWAN: 4 ♂, 11 ♀, ProV. Taichung, Anmashan , lower forest zone, 1650 m, 20.VI.1997, leg. B. Herczig & L . Ronkay (Coll. MWM/ ZSM); 5 ♂, 2 ♀, Prov. Ilan , 1200 m, Ming Chyr Forest Recreation Area , 4–5.VI.1997, leg. B. Herczig & L . Ronkay (Coll. MWM/ ZSM); 1 ♂, 5 ♀, Prov. Ping-Tung , 10 km SE of Mutan, 470 m, 03/ 04.VII.1996, leg.: G. Csorba & L. Németh (Coll. MWM/ ZSM); 5 ♂, 4 ♀, Prov. Kaohsiung, Tengchih Forest Recreation Area , 1200 m, 19.V.1997, leg.: Gy. M. László & G. László, slide MWM 31561 Volynkin (♂) (Coll. MWM/ ZSM); 1 ♀, Prov. Nan-Tou , 5 km W of Lu-shan hot spring, 22.IV.1997, leg. Gy. Fábián & S . T. Kovács, slide MWM 31587 Volynkin (♀) ( Coll. MWM/ ZSM); 1 ♀, Prov. Nan-Tau, Meimu, 2000 m, 28.X.1996, leg. Gy. Fábián & F . Nemes (Coll. MWM/ZSM).

Description. Adults ( Figs. 20–21 ). Forewing length 11.5– 13 mm in males and 14–14.5 mm in females. Wing pattern typical for the genus: forewings brown, costal margin broadly yellow, but at apeX with brown stroke, yellow dash is Visible on outer margin behind apeX; this dash is crossed by dark Veins; dark postmedian costal spot presented. Hindwing unicolorous yellowish-brown, its apical and outer parts with brownish tint. Male genitalia ( Fig. 34 ). Uncus slightly widened at apeX, with clear apical denticle; cucullus slightly wider than sacculus; dorsal edge of cucullus apeX rectangular, Ventral – rounded; distal saccular process narrow, apically pointed, bent dorsally; aedeagus slightly S-shaped, Vesica membranous, with elongate diVerticulum constricted apically and haVing a small finger-like subbasal subdiVerticulum, Vesica ejaculatorius originating subbasally. Female genitalia ( Fig. 43 ). OVipositor short and broad; apophyses anteriores and posteriores of same length, long and thin; ductus bursae slightly sclerotized, dorso-Ventrally flattened, narrowed posteriorly; corpus bursae pear-like, membranous, without signa.

Remark. The subspecies has slightly narrower forewings of both seXes with more straight costa, and a larger postmedian costal spot than the nominate subspecies. NeVertheless, the male and female genitalia of two subspecies haVe no significant differences.

Distribution. Taiwan.

Figures

FIGURES 20–23. Chinasa spp.: adults. 20, Ch. costalis bicoloriceps, ♂, Taiwan, Kaohsiung prov. (MWM/ZSM); 21, Ch. costalis bicoloriceps, ♀, Taiwan, Nan-Tou prov. (MWM/ZSM); 22, Ch. sapa, holotype ♂, N Vietnam (MWM/ZSM); 23, Ch. sapa, paratype ♀, N Vietnam(MWM/ZSM).

FIGURES 32–35. Chinasa spp.: male genitalia (genital capsules in lateral vieW).32, Ch. costalis costalis, holotype, N China, slide BMNH(E) Arct-2847 (©NHMUK); 33, Ch. costalis costalis, China, Sichuan, slide MWM 31591 Volynkin; 34, Ch. costalis bicoloriceps, TaiWan, slide MWM 31561 Volynkin; 35, Ch. sapa, holotype, N Vietnam, slide MWM 31590 Volynkin.

FIGURES 36–41. Lithosiina spp.: female genitalia (ventral vieW). 36, Prabhasa venosa, [India, Meghalaya] Khasis, slide BMNH(E) Arct-4557f HolloWay (©NHMUK); 37, Macohasa cernyi, paratype, N Vietnam, slide MWM 31774 Volynkin; 38, Macohasa orientalis, Malaysia, slide MWM 31776 Volynkin; 39, Macohasa tetraspila, paratype, Thailand, Chantaburi prov., slide AV4186m Volynkin; 40, Macohasa dimorpha, Philippines, PalaWan, slide MWM 31778 Volynkin; 41, Macotasa biplagella, slide BMNH(E) Arct-2849 (©NHMUK).

FIGURES42–44.Chinasa spp.: female genitalia (ventral vieW).42, Ch.costalis costalis, China, Zhejiang, slide MWM31593 Volynkin; 43, Ch. costalis bicoloriceps, TaiWan,slide MWM 31587 Volynkin; 44, Ch. sapa, paratype, N Vietnam, slide MWM 31589 Volynkin.