Achaea serva is a species of noctuid moth of the family Erebidae first described by Johan Christian Fabricius in 1775.

It is found from the Indo-Australian tropics of India, Sri Lanka, Myanmar, China, Borneo, Hong Kong, Java, the Philippines, the New Hebrides, to Okinawa, many western Micronesian islands and New Guinea and Australia.

[1] This species has a wingspan of 70–82 mm for the males and 62–80 mm for the females.

[2][3][4] Recorded larval food plants include Buchanania, Ipomoea, Diospyros, Rosa, Sapindus, Madhuca, Manilkara, Mimusops, Palaquium, Sideroxylon, Excoecaria agallocha, Ricinus communis and Acacia auriculiformis.

This Erebinae-related article is a stub.