Promacrochilo ambiguellus (Snellen, 1890) (Figs 115, 121, 125)

Chilo ambiguellus Snellen, 1890 . Trans. Ent. Soc. Lond., 1890: 642. Type locality: India.

Pydna notata Swinhoe, 1891 . Trans. Ent. Soc. Lond., 1891: 479. Type locality: India.

Description. Labial palpi porrect, yellow. Female much larger than male. Forewing yellow, with yellowish brown scales suffused along veins; three dark brown spots present at middle of cell, discocellulares and basal trisection of vein 1A+2A; a series of dark brown spots from apical costa to middle of inner margin. Hindwing with a blurry postmedial line from costa to inner margin. In male genitalia, gnathos semicircular, apex suffused with minute spines; valva broad, a semicircular process present at sacculus; manica with a tuft of coarse spines. In female genitalia, ostium bursae short and thin, a sclerotized plate present; ductus bursae membranous, 3 times as long as corpus bursae; corpus bursae with a spine-like signum.

Material examined. IZCAS: Hainan, Jianfengling, 2♂, 23 July–6 August 1981 , Yuan-Fu Liu, Mao-Bin Gu; Hainan, Maorui, 1♀, 24 August 1984 .

Distribution. China (Hainan); India, Nepal, Myanmar, Thailand, Malaysia.