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Gaeana is a genus of cicadas, most members of which have colourful marking on their forewings, found across tropical and temperate Asia. Their bright wing patterns have been hypothesized as being a case of Batesian mimicry where the toxic models may be day-flying moths of the families Zygaenidae and Arctiidae. It is closely related to the genus Tosena but is differentiated by the exposed tympanum and lacks spines on the sides of the pronotum.