Katydids (Orthoptera: Tettigoniidae) from the Iguaçu National Park, Brazil Author Fianco, Marcos 0000-0001-6662-6311 Author Szinwelski, Neucir 0000-0003-4049-3121 Author Faria, Luiz R. R. 0000-0002-7214-106X fianco.marcos@gmail.com text Zootaxa 2022 2022-05-13 5136 1 1 72 journal article 94100 10.11646/zootaxa.5136.1.1 538d9a36-c9c2-4145-a9b9-19f9150115f5 1175-5326 6550041 2E17DFE1-F5E8-479C-90BF-483546932C33 Engonia sp. 1 Fig. 10I, J ; 15C Comments: This species is probably new, differing from the three currently described species of Engonia , E. minor , E. pistacina Brunner von Wattenwyl, 1878 and E. rectangulata Burmeister, 1838 . The individuals analysed here differentiate from the species of the genus by: (1) pronotal carinae tricolour (red, white and black), (2) white strip behind the eyes, towards the pronotum, (3) antennae entirely black, (4) pronotal disc with red punctations, (5) males with cerci dilated at its base and straight, in the apex a spine appears, where a spine appears, (6) subgenital plate almost square with posterior processes longer than large, (7) median keel across its length, (8) apex of tegmina acuminated, and (9) vertex fastigium bilobate. However, the lack of designation of lectotypes both for E. minor and E. pistacina precludes the description of this new species by now. Bioacoustics ( Fig. 12E–H ): Males produce echemes of moderate duration, where each sequence is composed by three to seven syllables. Each syllable is composed by five to eight isolated pulses, in a “tic” pattern, with syllables of opening and closing stroke. The hemisyllables of opening are of low intensity and frequency, and the closing are of high intensity and higher frequency. Additionally, during the syllables, the first pulses have smaller intensity than the last ones. The records of the calling song of E. minor and of Engonia sp. 1 are the first of species within Cosmophylla. Dominant frequency : 12.3 ± 1.2 kHz. Bandwidth : 5.2 ± 1.4 kHz. Duration : Pulse: 0.01 ± 0.005 s ; Syllable: 1.3 ± 0.1 s ; Echeme: 32 ± 5 s. Mute interval : Pulse: 0.1 ± 0.03 s ; Syllable: 9.6 ± 4.7 s ; Echeme: 500 ± 326 s.