Fig. 1. Drawing of the right fore-wing of Teleogryllus oceanicus made from a photograph. The wing is viewed from below. The nomenclature of the venation and fields of the wing follow those given in Table 1. Areas implicated in sound production are the harp (green) and mirror (blue) The flexible regions separating the lateral field from the wing base and lateral field are shown as purple areas, and additional flexible regions are highlighted by purple lines. For free vibration tests, the wing was waxed to the vibration probe (see Fig. 2) at the base of the lateral field (blue spot). For tests in which vibration was applied to the file, plectrum or anal area, the wing was glued to a steel rod at the bases of the Sc, R and M veins (red spot). Vibration via the anal area was applied at the position of the circle at the end of the `anal area' label line.

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