Tachycines (Gymnaeta) lii, 2019

Qin, Yanyan, Liu, Xianwei & Li, Kai, 2019, Review of the subgenus Tachycines (Gymnaeta) Adelung, 1902 (Orthoptera, Rhaphidophoridae, Aemodogryllinae, Aemodogryllini), Zootaxa 4560 (2), pp. 273-310 : 297-298

Tachycines (Gymnaeta) lii sp. nov.

( Figs. 72–75 )

Description. Male. Body small to medium sized for this genus. Vertex of head divided by conical tubercles. Legs elongate and slender; fore femur about 2.7 times longer than the pronotum, ventrally unarmed, internal knee lobe with a small spine, external genicular lobe with 1 elongate movable spur; fore tibiae ventrally with 2 external spurs and 1 internal spur, between the apical spurs with a small spine. Mid femur with an elongate movable spur on the internal and external genicular lobe respectively, ventrally unarmed; mid tibiae beneath with 1 external spur and 1 internal spur. Hind femur without spines ventrally; hind tibiae above at each side with 42–48 spines respectively, arranged in groups. Supra internal spur of hind tibiae not exceeding ventral apex of hind metatarsus. Hind metatarsus keeled ventrally ( Fig. 72 ). Male genitalia as Figs. 73–74 .

Female. Subgenital plate nearly triangular and with lateral projections at base ( Fig. 75 ). Ovipositor almost equal to half the length of hind femur.

Coloration. Body unicolor, light brown, without stripes. Measurements. (length in mm) Body ♂ 11.0–12.0, ♀ 10.0–11.0; pronotum ♂ 4.5–6.0, ♀ 4.0–5.0; fore femur ♂ 12.0–14.0, ♀ 8.5–11.0; hind femur ♂ 22.0–23.0, ♀ 19.0–22.0; ovipositor 9.5–11.0.

Specimens studied. Holotype, 1♂, Leye Xian, Xiayan Cave , Guangxi, alt. 2300m, 2007-V-26, collected by Li; paratypes, 1♂ 4♀♀, same data as holotype.

Distribution. China (Guangxi).

Diagnosis. The main characters of this species is that body unicolor and very light. It is rather similar to T. (G.) borutzkyi ( Gorochov, 1994) but differs from the latter in that: body unicolor; basal part of epiphallus of male genitalia with a pair of tubercles; but T. (G.) borutzkyi ( Gorochov, 1994) with the paired tubercles in proximal part.

Etymology. The specific epithet refers to the person’s first name who collected the examined specimens.

Figures

FIGURES 72–75. Tachycines (Gymnaeta) lii sp. nov.. 72. tarsus of hind leg, lateral view; 73. male genitalia, dorsal view; 74. male genitalia, ventral view; 75. female subgenital plate, ventral view. (scale=1mm)