A histogram showing the number of katydid species and the peak frequency of their calling songs. The red bars represent sonic callers (<20 kHz), light blue bars represent ultrasonic callers, and the dark blue bars represent extreme ultrasonic callers (>40 kHz).

  Part of: Tan MK, Duncan J, Wahab RHA, Lee C-Y, Japir R, Chung AYC, Baroga-Barbecho JB, Yap SA, Montealegre-Z F (2023) The calling songs of some katydids (Orthoptera, Tettigonioidea) from the tropical forests of Southeast Asia. Journal of Orthoptera Research 32(1): 1-24. https://doi.org/10.3897/jor.32.84563