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Aosta Valley, Italy - July 9, 2011. Female of Tettigonia viridissima (family: Tettigoniidae). This family, known in American English as katydids and in British English as bush-crickets or long-horned grasshoppers, is part of the suborder Ensifera and contains more than 6400 species. Tettigonia viridissima is very common in the Alps.