Chinasa costalis costalis (Moore, 1878), comb. nov.

(Figs. 17–19, 32–33, 42).

Prabhasa costalis Moore, 1878, Proceedings of the Zoological Society of London, 1878: 26 (Type locality: “North China ”). Prabhasa venosa: Daniel 1954: 126, fig. 85; Fang 2000: 244–245, fig. 166, pl. XII, fig. 4; Dubatolov & Zolotuhin 2011: 374, fig. 25, pl. VII, fig. 7; Dubatolov et al. 2012: 32, figs. 18, 72.

Type material examined. Holotype (Figs. 17, 32): ♂, handwritten label “N China” / printed label “Moore Coll. 94-106” / round printed label with red border “Type” / blue label “ Arctiidae genitalia slide No. [printed] 2847 ♂ [handwritten]” / printed label with QR-code “NHMUK010401752” (Coll. NHMUK).

Other material examined. CHINA: 7 ♂, 2 ♀, China, Guangdong, Shaoguan, Nanling, 900–1400m, 16– 20.V.2009, Y. Kishida, Wang M., gen. preps. Dubatolov and slides AV2406 ♂, AV2407 ♀ Volynkin (Coll. SZMN); 1 ♂, [Zhejiang], West-Tien-Mu-Shan, 9.VI.1935, H. Höne / Sammlung Daniel / Präp. Nr. 374 Slg. Franz Daniel München (Coll. MWM/ ZSM); 1 ♂, 1 ♀ [Zhejiang], West-Tien-Mu-Shan, 9.VI.1935, H. Höne / Sammlung Daniel / Lith. venosa Moore det. F. Daniel, slides MWM 31592 Volynkin (♂) and MWM 31593 Volynkin (♀) (Coll. MWM/ ZSM) ; 1 ♂, Sichuan, Quingchenghoushan Mts., 70 km NW Chengdu, 1400 m, 15–20.VI.2005, leg. S., V., M. Murzin, slide MWM 31591 Volynkin (Coll. MWM/ ZSM) .

Description. Adults (Figs. 17–19). Forewing length 12–13 mm in males and 14–14.5 mm in females. Forewings dark brown; yellow costal margin contrast, but at apeX there is dark brown stroke; apical half of outer margin with triangular yellow dash crossed by dark Veins; dark postmedian costal spot distinct. Hindwings light brown, slightly lighter at anal part. Male genitalia (Figs. 32–33). 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 apicaly and haVing a small finger-like subbasal subdiVerticulum, Vesica ejaculatorius originating subbasally. Female genitalia (Fig. 42). OVipositor short and broad; apophyses anteriores and posteriores of same length, long and thin; ductus bursae moderately sclerotized, dorso-Ventrally flattened, narrowed posteriorly; corpus bursae pear-like, membranous, without signa.

Remark. There is a Visible Variability in cucullus and sacculus length; in some specimens, sacculus apeX is noticeably longer that cucullus apeX, but we haVe not enough material to study this Variability.

Distribution. China (Zhejiang, Guangdong, GuangXi, Sichuan, Yunnan).