Tethea albicosta is a moth in the family Drepanidae.

[1] It is found in Nepal, Assam in India, Myanmar and the Chinese provinces of Hubei, Hunan, Sichuan, Guangdong, Guangxi, Yunnan and Tibet.

[2] Adults are greyish brown, the forewings varied pinkish and greenish white along the costa beneath which are several narrow transverse undulating dark-brown pale-bordered lines.

There are two indistinct reniform discal marks, as well as a curved streak beneath the apex and a marginal undulating narrow line.

This article on a moth of the subfamily Thyatirinae is a stub.