Koyaga virescens

Koyaga virescens is a moth of the Noctuidae family. It is found in Japan and Taiwan.

The length of the forewings is 8–11 mm. The forewings are dark brown sparsely tinged with rufous and suffused with olive-brown especially on medial and subterminal areas. The hindwings are white irrorated with golden brown and with a fuscous terminal series.