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(a) A file (red arrow) is situated at the left anterior angle of the mesonotum. (b) A file (red arrow) is situated at the right anterior angle of the mesonotum. (c) A micrograph of a stridulatory file. (d) The red arrow indicates the scraper of a stridulatory organ. (e) A scanning electron micrograph showing the ridges of a file. (f) A scanning electron micrograph showing the scraper of a stridulatory organ.
