Teinoptila bolidias (Meyrick, 1913)

(Figs. 2, 6–7)

Hyponomeuta bolidias Meyrick, 1913: 137. Yponomeuta bolidias: Friese, 1962: 309. Choutinea shaanxiensis Huang, 1982: 269. Type locality: Thailand.

Adult (Fig. 2): Wingspan 21.0–27.0 mm.

Material examined. Gansu Province: Kang County, 1100 m, 1.vi.1995, coll. Aisihaer (1 3); Wen County, 860 m, 11–14.vii.2005, coll. Haili Yu (5 3, 12 Ƥ); Tianshui, 1331 m, 30.vii.2006, coll. Xinpu Wang and Xiangfeng Chi (1 Ƥ); Hubei Province: Shennongjia, 1200–1400 m, 17–18.vii.2003, coll. Shulian Hao (5 3, 2 Ƥ); Shaanxi Province: Yangling, 450 m, 17–28.vi.1985 (3 3, 4 Ƥ), 31.v–26.vi.1986 (2 Ƥ); Ningshan County, 880 m, 17.vi.1987, coll. Houhun Li (2 3, 1 Ƥ); Baihe County, 200 m, 16–17.v.1994 (1 3, 2 Ƥ); Danfeng County, 680 m, 29.v.1994, coll. Jin Zhou (1 Ƥ).

Distribution. China (Gansu, Hubei, Hunan, Shaanxi, Yunnan, Zhejiang), Thailand.

Diagnosis. This species is characterized by dark gray cilia on upper half of termen in the forewing, the ventral margin of sacculus with a U-shaped mesal concavity in the male genitalia (Fig. 6), and the short ductus bursae without twisted portion in the female genitalia (Fig. 7). It is quite similar to Yponomeuta solitariellus Moriuti, 1977 in appearance, but can be distinguished by the absence of the white subapical spot on costa.