Clinotettix Bey-Bienko, 1933

Sergeev, Michael G., Molodtsov, Vladimir V., Lapteva, Svetlana V. & Storozhenko, Sergey Yu., 2025, Taxonomy, distribution patterns and ecological and geographic modelling of Clinotettix ussuriensis Bey-Bienko, 1933 (Orthoptera: Tetrigidae), Zootaxa 5566 (1), pp. 173-184 : 174-175

Genus Clinotettix Bey-Bienko, 1933

Clinotettix Bey-Bienko, 1933: 327 ; Bey-Bienko, 1951: 101; Steinmann, 1964: 457, 465; Steinmann, 1971: 331; Podgornaja, 1976: 8; Podgornaja, 1983: 67; Storozhenko, 1986: 274; Blackith, 1992: 24; Yin et al., 1996: 858; Liang & Zheng, 1998: 180, 248, 257; Kim & Kim, 2004: 263; Storozhenko & Paik, 2007: 128; Storozhenko & Paik, 2010: 39; Storozhenko et al., 2015: 173.

Tetrix : Rehn & Grant, 1961: 43 (partim); Otte, 1997: 124 (partim).

Type species: Clinotettix ussuriensis Bey-Bienko, 1933 , by original designation.

Redescription. Body medium size for subfamily. Head with frons strongly slanted; frontal ridges weakly emarginated between the eyes and roundly protruding between the antennal sockets.Antennae filiform, 14–16-segmented; antennal sockets situated at the lower margins of eyes. Eyes not protruding above vertex in lateral view. Fastigium in dorsal view apically angulated, much wider than width of an eye, its median carina distinct but not merging with frontal costa; in lateral view fastigium considerably produced in front of eyes. Dorsal side of pronotum flat, with almost straight or indistinctly triangular anterior margin; median carina developed as well as the lateral carinae; in lateral view median carina straight or weakly arched near the transverse furrows, but always low and almost disappear near anterior margin of promotum; the oblique carinae not reaching the humeral angles; posterior process of pronotum long, but relatively broad at apex. Lateral lobes of pronotum with hind margin bisinuate, the upper (tegminal) sinus almost as deep as lower one. Tegmina ovate; hind wings with scalloped inner margin, almost reaching or slightly surpassing the apex of posterior process of the pronotum. Lower side of fore and mid femora indistinctly sinuate or almost straight; upper and lower sides of hind femur finely serrated. First tarsal segment of hind legs longer than 3rd one, with rather pointed ventral pads. Male subgenital plate triangular with apex shallowly notched. Female subgenital plate with triangular posterior margin; dorsal valves of ovipositor thick, at about 3 times as long as wide; ventral valves narrower, 4.5 times as long as wide.

Remarks. Taxonomy of the genus is confused till now. Rehn & Grant (1961) compared the original description of Clinotettix ussuriensis with Nearctic Tetrix brunnerii (Bolívar, 1887) and considered the genus Clinotettix as a synonym of Tetrix Latreille, 1802 . Later Podgornaja (1976) resurrected Clinotettix as the distinct genus. Otte (1997) again placed Clinotettix under the synonym of Tetrix and erroneously mentioned Acrydium sibiricum ussurianum Bey-Bienko, 1929 as the type species of Clinotettix . The taxon described as the subspecies of A. sibiricum I. Bolívar, 1887 from the Russian Far East ( Bey-Bienko, 1929) is not conspecific with Clinotetttix ussuriensis . Moreover A. sibiricum ussurianum was synonymized with Tetrix japonica (I. Bolívar, 1887) by Bey-Bienko (1951). Unfortunately, till now such incorrect data are present in the Orthoptera Species File database ( Cigliano et al., 2024).

The genus Clinotetttix is most similar to Tetrix Latreille, 1802 but differs from the latter in the strongly slanted frons and the fastigium considerably produced in front of eyes (in Tetrix , the frons more or less vertical and fastigium rather short and roundly truncated).

Composition. This genus consists of Clinotettix jilinensis Zheng et Ren, 1996 from Jilin Province of China and the type species. A key to species is given below.

Key to species of Clinotettix

1(2) Hind femora slender, 3.0–3.75 times as long as wide. Fastigium only 2.2–2.6 times as wide as an eye from above................................................................................................... C. ussuriensis

2(1) Hind femora broad, 2.7 times as long as wide. Fastigium 3.0–3.3 times as wide as an eye from above........... C. jilinensis