Formosatettix Tinkham 1937
Creators: name: Deng, Wei-An
name: Luo, Jie-Ling
name: Huang, Chao-Mei
name: Lin, Li-Liang
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Tetrigidae
Formosatettix

description: Genus Formosatettix Tinkham, 1937
http://orthoptera.speciesfile.org/Common/basic/Taxa.aspx?TaxonNameID=1101952.
Formosatettix Tinkham, 1937: 237; Tinkham, 1939: 463; Bey-Bienko & Mistshenko, 1951: 107; Storozhenko, 1CCCCCCCc981: 8; Liang, 1991: 113; Zheng, 1992b: 326; Blackith, 1992: 78; Storozhenko & Ishikawa, 1993: 2; Liang, 1993: 73; Yin et al., 1996: 871; Otte, 1997: 101; Liang & Zheng, 1998: 182; Jiang & Zheng, 1998: 344; Kim & Kim, 2004: 263; Zheng, 2005: 348; Deng et al., 2007b: 314; Zheng, 2009: 130; Zheng, 2012: 8; Deng, 2016: 268; Wei et al., 2019: 1002; Zha et al., 2020: 61.
Type species. Formosatettix arisanensis Tinkham, 1937 by original designation.
Description and differential diagnosis. This genus is characterized by follow combination of features: head not exserted above upper level of pronotum; fastigium of vertex in dorsal view surpassing the anterior margin of eyes, generally much wider than width of one compound eye from above; anterior margin of fastigium arched or straight; pronotum compressed, dorsum tectiform, usually without humeral angle; in dorsal view, anterior margin of pronotum arcuate protruding, truncate or angular projecting; the apex of pronotum rounded or bilobate; in profile, median carina of pronotum high, arch-like or straight; posterior angles of lateral lobes turned downwards, apex of posterior angles obtuse rounded; posterior margins of lateral lobes of pronotum only with ventral sinus, the tegminal (upper) sinus absent; tegmina and hind wings invisible (generally vestigial hidden under pronotum or apterous); fore and middle femora elongated, with straight or undulated ventral margins.
Formosatettix is most similar to Alulatettix Liang, 1993. The difference between the two genera occurs in the posterior margins of lateral lobes of pronotum and the flying organs. In Formosatettix, the posterior margins of lateral lobes of pronotum only with ventral sinus and tegminal (upper) sinus is absent; tegmina and hind wings are generally invisible (generally strongly reduced to minute scales completely hidden under pronotum or apterous). In Alulatettix, the posterior margins of lateral lobes of pronotum with ventral sinus and tegminal (upper) sinus; tegmina visible; and hind wings abbreviated but visible (not uncovering the pronotum). Formosatettix is also similar to Aalatettix Zheng & Mao, 2002. The difference between the two genera is in tegminal sinus of the posterior margins of lateral lobes of pronotum. In Formosatettix, tegminal (upper) sinus is absent; in Aalatettix, tegminal (upper) sinus is present but inconspicuous. Therefore, Aalatettix may be considered a synonym of Formosatettix, but more studies are required to confirm this inference.
Composition and distribution: Altogether, 67 species are now assigned to the genus Formosatettix and found in China, Russia, Korea, Japan, Pakistan and Nepal (Fig. 1).
description: Published as part of Deng, Wei-An, Luo, Jie-Ling, Huang, Chao-Mei & Lin, Li-Liang, 2023, Review of the genus Formosatettix Tinkham (Orthoptera: Tetrigidae) with description of new taxa, new synonymy and an updated key to species, pp. 201-243 in Zootaxa 5228 (3) on pages 202-203, DOI: 10.11646/zootaxa.5228.3.1, http://zenodo.org/record/7532348