Arna bipunctapex (Hampson, 1891)

(Figs. 1–2, 27, 41)

Somena bipunctapex Hampson, 1891: 57 . Artaxa bipunctapex: Kirby, 1892: 453 .

Aroa bipunctapex: Swinboe, 1892: 191 .

Euproctis bipunctapex: Hampson, 1892: 484; Holloway, 1976: 46; Chao, 2003: 423. Nygmia bipunctapex: Swinhoe, 1922: 483 .

Arna bipunctapex: Holloway, 1999: 48 .

Diagnosis. Forewing length 12–16 mm. Forewing brown, a yellow patch at the apex and tornus respectively, apical patch with two black spots; hindwing brown with a yellow margin and fringes. Male genitalia (Fig. 27): Uncus broad, apically divided in the dorso-ventral plane, acute at apex of dorsal part; valva narrowed from apex of sacculus to costa, costa protruded apically; saccus small, triangular; aedeagus small, slender. Female genitalia (Fig. 41): Ostium U-shaped; ductus short, sclerotized basally; bursa without signum.

Material examined. 23, 1Ƥ, Nanling National Nature Reserve, Guangdong, 13.VI.2007.

Distribution. China (Jiangsu, Henan, Shanxi, Shanghai, Zhejiang, Hubei, Sichuan, Xizang, Fujian, Jiangxi, Hunan, Guangdong, Guangxi, Yunnan, Hainan, Hong Kong, Taiwan), Japan, Thailand, Nepal, India, Malaysia, Indonesia.

Remarks. Holloway (1999) reviewed this species and provided more detailed information.