(7) Adela sinica Yang, 1977

Adela sinica Yang, 1977: 63, pl. 1, fig. 2 (Type locality: Baihuashan, Beijing, China); Hua 2005: 2 (list of China); Wang 2014: 6 (sorting of Yang 1977).

Diagnosis. This species is similar to A. nobilis, but can be distinguished by the following characters: the antenna of the male is about three times the forewing length; the central fascia of forewing is relatively narrow and regular; the gold scales of the forewing apex are placed between R 3 and Cu 2; and the very long hairs on the hind legs.

Specimens examined. Not available in this study.

Distribution. China (Beijing).

Remarks. This species was described by Yang (1977) based on a single specimen from hazel trees, Corylus (Betulaceae), on Mt. Baihuashan, but the original paper did not provide detailed external characters, especially the male genitalia, and clear colorful photos.Additionally, since this species was first reported, there has been no related information about it, and the type specimen deposited in CAU was completely damaged, leaving only the labels (Wang 2014).