Polymixis serpentina is a moth of the family Noctuidae. It is found in Italy, the Balkan Peninsula and Crete.Fauna Europaea

The wingspan is about 36 mm. Adults are on wing from October to November.

The larvae feed on various low-growing plants.Moths and Butterflies of Europe

Subspecies Polymixis serpentina serpentina Polymixis serpentina minoica Fibiger, 1992 (Crete)

Polymixis iatnana was formerly treated as a subspecies Polymixis serpentina.

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