Thyrgis ruscia is a moth of the subfamily Arctiinae. It was described by Herbert Druce in 1895. It is found in Bolivia and Ecuador. Note: This source gives Thyrgis ruscia as a synonym of a subspecies of Thyrgis phlegon.

Subspecies Thyrgis ruscia ruscia (Bolivia) Thyrgis ruscia phlegon (H. Druce, 1885) (Ecuador)

References