SEM photos of stridulatory files of different groups: Group A A Bancarevo (eastern Serbia, type locality) B Kladovo (north-eastern Serbia); Subgroup B1 C Mesić (Pannonian Serbia) D Deronje (Pannonian Serbia); Subgroup B2 E Durmitor, Pirlitor (Montenegro / not included in analyzes) F Ovčar-Kablar Gorge (western Serbia / not included in analyzes).

  Part of: Ivković S, Chobanov D, Horvat L, Iorgu IȘ, Hochkirch A (2022) Geographic differentiation in male calling song of Isophya modestior (Orthoptera, Tettigoniidae, Phaneropterinae). ZooKeys 1122: 107-123.