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Astatometopon gen. nov. is described to accommodate A. sakakibarai sp. nov., a delphacid planthopper distributed in the Nahuelbuta and Andes mountain ranges in the central and south central zones of Chile. The new taxon is placed into Delphacini but it presents some unusual features for the tribe, such as a strongly asymmetrical phallus with a porrect process arising from base, the absence of teeth on the hind margin of calcar, and an exceptional variation in carination of the eumetope. Astatometopon gen. nov. es descrito para acomodar a A. sakakibarai sp. nov., un delfacido distribuido en las cordilleras de Nahuelbuta y los Andes en las zonas centro y centro sur de Chile. El taxon es clasificado en Delphacini pero presenta caracteristicas inusuales para la tribu, como un falo fuertemente asimetrico con un proceso porrecto erigido desde la base, la ausencia de dientes en el margen posterior del calcar, y una variacion excepcional en la carenacion de la eumetopa.

Astatometopon sakakibarai gen. & sp. nov., a montane planthopper from Chile (Hemiptera: Fulgoroidea: Delphacidae)