Decticus verrucivorus sayram, Liu & Chen & Liu, 2020

Liu, Fei, Chen, Liusheng & Liu, Chunxiang, 2020, Taxonomic Studies of the genus Decticus Serville, 1831 from China (Orthoptera Tettigoniidae: Tettigoniinae), based on Morphology and Songs, Zootaxa 4860 (4), pp. 563-576 : 575

Decticus verrucivorus sayram ssp. n.

Material examined. Holoype. Male, China: Xinjiang: Sayram Lake Scenic Area , 1992.VII.22, Coll. Huang Chunmei; Paratypes. 3 males, 2 females , same data as in holotype .

Diagnosis. Small-sized. Tegmen light green with light brown to transparent spots ( Fig. 5c ), Tegmen exceeding abdominal apex, extending up to the knee of hind femora, with rounded apex. Tenth abdominal tergum with an approximate trapezoid concave ( Fig. 4j ). Subgenital plate with an approximately right-angle incision ( Fig. 4o ).

Description Male (holotype). Lateral lobe of pronotum approximately as wide as high. Stridulatory file with about 70–72 widely-arranged teeth, which gradually become smaller at both ends ( Fig. 6f ). Fore and middle femora without spines; hind femur with a few ventro-posterior spines Each tibia with numerous spines on both margins. Epiproct tongue-shaped, covered by tenth abdominal tergum, bent down at a angle of 45°. Cercus branched in middle ( Fig. 4h ).

Colour. Generally light green miscellaneous light brown; ventral surface of abdominal segments yellow. Face generally light green. Pronotum pale brown. Tegmen light green, scattered with approximately transparent spots, with light green to brown venations. Fore and middle leg uniformly brown, hind femur brown with light green.

Female. Hind femora armed with 3 small ventro-anterior spines. Subgenital plate with a semicircular incision.

Measurement (mm). See Table 6 and Table 7 .

Distribution. China (Xinjiang, Sayram Lake Scenic Area).

Etymology. Named after type locality (Sayram Lake in Xinjiang, China) of the new subspecies.

Figures

FIGURE 4a–o. Male pronotum and abdominal apex (scale: 1.00 mm). a–e: Pronotum; f–j: The dorsal view of abdominal apex; k–o: The ventral view of abdominal apex.

FIGURE 5a–e. Right tegmen of males. a: D. v. verrucivorus; b: D. v. latipennis ssp. n; c: D. v. sayram ssp. n. d: D. v. crassus; e: D. albifrons.

FIGURE 6a–j. Stridulatory apparatus of Decticus. a, c, e, g, i: Mirror on right tegmen; b, d, f, h, j: Stridulatory file on underside of male left tegmen; a–b: D. v. verrucivorus; c–d: D. v. latipennis ssp. n.; e–f: D. v. sayram ssp. n.; g–h: D. v. crassus; i–j: D. albifrons.