Review of the genus Formosatettix Tinkham (Orthoptera: Tetrigidae) with description of new taxa, new synonymy and an updated key to species Author Deng, Wei-An Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin, Guangxi 541006, China & Guangxi Key Laboratory of Rare and Endangered Animal Ecology, Guangxi Normal University, Guilin, Guangxi 541006, China College of Life Science, Guangxi Normal University, Guilin, Guangxi 541004, China & School of Chemistry and Bioengineering, Hechi University, Yizhou, Guangxi 546300, China Author Luo, Jie-Ling 0000-0002-9378-5243 Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin, Guangxi 541006, China & Guangxi Key Laboratory of Rare and Endangered Animal Ecology, Guangxi Normal University, Guilin, Guangxi 541006, China College of Life Science, Guangxi Normal University, Guilin, Guangxi 541004, China & luojl 0121 @ 163. com; https: // orcid. org / 0000 - 0002 - 9378 - 5243 Author Huang, Chao-Mei 0000-0003-1046-1348 Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin, Guangxi 541006, China & Guangxi Key Laboratory of Rare and Endangered Animal Ecology, Guangxi Normal University, Guilin, Guangxi 541006, China College of Life Science, Guangxi Normal University, Guilin, Guangxi 541004, China & hcm 2337244016 @ 163. com; https: // orcid. org / 0000 - 0003 - 1046 - 1348 Author Lin, Li-Liang 0000-0002-9972-4732 College of Life Sciences, Shaanxi Normal University, Xi’an, Shaanxi 710062, China. & ll _ lin @ 163. com; https: // orcid. org / 0000 - 0002 - 9972 - 4732 text Zootaxa 2023 2023-01-13 5228 3 201 243 journal article 226118 10.11646/zootaxa.5228.3.1 cf926743-58e3-46e4-8b3a-b5430c228fca 1175-5326 7532348 CF7244F1-F2FA-4435-BD96-5492BC1AF6B8 1. Bolivaritettix circocephalus Zheng, 1992 ( Figs. 2 , 24A ) Bolivaritettix circocephalus Zheng, 1992d: 83 [description] ( holotype —♁, China : Tibet , Mêdog , in IZCAS). Formosatettix torulosinota Zheng & Mao, 2002: 94 [description] ( holotype — ♀ , China : Yunnan prov. , Weishan County, in IZSNU, examined); Zheng & OuCCCCC, 2004: 107; Zheng, 2005: 367; Deng Zheng & Wei, 2007b: 327; Deng, 2016: 283 ; Wei, Deng & Lu, 2019:1009 ; syn. nov. Type material examined. Holotype Formosatettix torulosinota , ♀ , larva, China : Yunnan prov. , Weishan County , 13. June 1996 , in IZSNU . FIGURE 2. Nymphs of Bolivaritettix circocephalus Zheng, 1992 . Holotype of Formosatettix torulosinota Zheng & Mao, 2002 , syn. nov. A—Dorsal view, B—Lateral view, C—Ventral view, D—Labels, E—Lateral view (after Zheng & Mao). Notes. We examined the type specimen of Formosatettix torulosinota and found that it has hind wings. Therefore, it belongs to a winged pygmy grasshopper species other than Formosatettix . However, its hind wings have only radial venation, without cross-veins ( Fig. 2C ), indicating that it is a nymph. The type specimen of F. torulosinota is in poor condition with the abdomen and hind legs missing, but there is evidence indicating that it is a nymph. In the original description of Formosatettix torulosinota , Zheng & Mao (2002) provided a drawing showing that the antegenicular teeth of the dorsal margin before the knee of the hind femora were absent ( Fig. 2E ). Formosatettix torulosinota ( Zheng & Mao, 2002 ) syn. n. represents a nymph of Bolivaritettix circocephalus . It has slightly truncate posterior angles in the pronotal lateral lobes, dense protuberances on the pronotal surface, obtuse humeral angle, interhumeral carina, and a narrow vertex.