Sesamia nonagrioides, the Mediterranean corn borer, pink stalk borer or West African pink borer, is a moth of the family Noctuidae. It was described by Alexandre Louis Lefèbvre de Cérisy in 1827. It is found in Spain, southern France, Italy and on the Balkan Peninsula, as well as in north-western, south-western and western Africa.

The wingspan is 30–40 mm.

The larvae feed on Phragmites communis and Arundo donax and probably also other grasses with thick stems.

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