Trigonidiidae, Saussure, 1874

Yuan, Wei, Ma, Li-Bin & Gu, Jun-Jie, 2023, A new genus and a new species of Trigonidiidae (Orthoptera: Grylloidea) from north Myanmar amber, Zootaxa 5330 (1), pp. 141-146 : 142

Key to genus of Trigonidiidae in amber

1. Tegmen and wings present.

Tegmen and wings absent.................................................................. Qiongqi gen. nov. 2. Tegmina without hairs.

Tegmina with hairs................................................................ Amusurgus Chopard, 1936 3. Second tarsomeres wide and flat.

Second tarsomeres neither widened, nor flat................................................................ 8 4. Tegmina with cross-veins.

Tegmina without cross-veins...................................................... Rhicnogryllus Chopard, 1936 5. Metabasitarsi not serrulated.

Metabasitarsi serrulated............................................................... Curvospurus He, 2022 6. Tegmina with faint cross-veins.

Tegmina with obvious cross-veins................................................... Cyrtoxipha Gorochov, 2010 7. Head vertical, front oblique, extending forward between antennal bases................ Anaxipha Vickery & Poinar, 1994

Head without specialization obviously......................................... Abanaxipha Vickery & Poinar, 1994 8. Head triangular in front view.............................. Birmaninemobius Xu, Zhang, Jarzembowski & Fang, 2020

Head rounded in front view..................................................... Baltonemobius Gorochov, 2010