Horned and spiky: Tegotettix derijei sp. n. (Orthoptera: Tetrigidae) is a peculiar new pygmy grasshopper species from Mindanao Author Patano, Romeo R. 0000-0001-5020-6048 Center for Biodiversity Research and Extension in Mindanao, Central Mindanao University, Musuan, Maramag, Bukidnon 8710, Philippines. & Department of Biology, College of Arts and Sciences, Central Mindanao University, 8710, Musuan Bukidnon, Philippines. romeonojrpatano @ gmail. com; https: // orcid. org / 0000 - 0001 - 5020 - 6048 romeonojrpatano@gmail.com Author Mohagan, Alma B. 0000-0002-8303-5131 Center for Biodiversity Research and Extension in Mindanao, Central Mindanao University, Musuan, Maramag, Bukidnon 8710, Philippines. & Department of Biology, College of Arts and Sciences, Central Mindanao University, 8710, Musuan Bukidnon, Philippines. romeonojrpatano @ gmail. com; https: // orcid. org / 0000 - 0001 - 5020 - 6048 romeonojrpatano@gmail.com Author Tumbrinck, Josef 0000-0001-8865-5551 Auf der Hees, Wassenberg, D- 41849 Germany. Author Amoroso, Victor B. 0000-0002-8955-7934 Center for Biodiversity Research and Extension in Mindanao, Central Mindanao University, Musuan, Maramag, Bukidnon 8710, Philippines. & Department of Biology, College of Arts and Sciences, Central Mindanao University, 8710, Musuan Bukidnon, Philippines. romeonojrpatano @ gmail. com; https: // orcid. org / 0000 - 0001 - 5020 - 6048 romeonojrpatano@gmail.com Author Skejo, Josip 0000-0002-2554-4499 University of Zagreb, Faculty of Science, Department of Biology, Evolution Lab, Rooseveltov trg 6, HR. 10000 Zagreb. * corresponding author: skejo. josip @ gmail. com; https: // orcid. org / 0000 - 0002 - 2554 - 4499 skejo.josip@gmail.com text Zootaxa 2021 2021-02-19 4933 2 198 210 journal article 275742 10.11646/zootaxa.4933.2.2 c793b397-abf5-4129-96d2-c335fe222b4e 1175-5326 10081186 3999E2EF-32AF-4F6D-9BED-4A0DCE8B69D4 Tegotettix novaeguineae species group Diagnosis. Fastigial horns low. Lateral ocelli placed in the lower fourth of the compound eye height. In frontal view, frontal costa long and distinct, as long as half of the compound eye height. Facial carinae after bifurcation straight, almost parallel. Shoulders of the pronotum robust, however, not as those in the T. armatus species group. Prozona developed. Pronotal discus and median carinae with projections. Femora strongly undulated. Chitinous surfaces finely granulated. Composition and distribution . For now, this species group includes only Tegotettix novaeguineae Günther, 1938 (New Guinea ) ( Figure 4 ), but we know of at least one new species that awaits description.