Figures 23-31 from: Massa B (2017) Revision of the tropical African genus Tetraconcha (Orthoptera: Tettigoniidae: Phaneropterinae) with the description of ten new species. Journal of Orthoptera Research 26: 211-232. https://doi.org/10.3897/jor.26.21469

Figures 23-31 - Tetraconcha stichyrata male (Ivory Coast, Taï Nat. Park): 23. Stridulatory area; 24. Stridulatory file below the left tegmen; 25. Subgenital plate in ventral view. Tetraconcha banzyvilliana male (Cameroon): 26. Stridulatory area; 27. Stridulatory file below the left tegmen. Tetraconcha perezi sp. n. holotype male (Central African Republic, N'Doki): 28. Stridulatory area; 29. Stridulatory file below the left tegmen; 30. Subgenital plate in ventral view; 31. Cerci in dorsal view. Fig. 26 after Orthoptera Species File, Fig. 27 after Leroy (1970).