Mitius eryuanensis Yuan, Xie & Liu, 2021

Yuan, Li-Lan, Xu, Fei, Wang, Xiao-Xiao, Zhang, Dong-Xiao, Xie, Guang-Lin & Liu, Hao-Yu, 2021, Checklist of the infraorder Gryllidea (Orthoptera: Ensifera) from Yunnan province, China, with description of one new species, Zootaxa 4995 (3), pp. 492-504 : 499

* Mitius eryuanensis Yuan, Xie & Liu , sp. nov.

( Figs. 1–9 )

Type material. Holotype: ♂, CHINA, Yunnan, Eryuan, Xishan , 27.VI.2020, leg. Lilan Yuan. Paratypes: 2♂ 3♀, 27.VI.2020, same data as the holotype .

Diagnosis. This new species is similar to Mitius enatus Gorochov, 1994 , but differs from the latter in that it lacks hind wings; the apex of lateral lobes of epiphallus not bifurcated, and the apex of middle lobe broad and round.

Description. Male ( Fig. 1 ). Body size small, covered with pubescence. Head ( Fig. 3 ) nearly globular and smooth. Frontal rostrum slightly protruding and wide, about 2.5 times as wide as the scapus; eyes weakly protruding, and longitudinally ovoid; ocelli rather distinctly, median ocellus transverse ovoid; lateral ocelli nearly round. Fronto-clypeal suture convex, and the middle part arc-shaped; last joint of maxillary palpus slightly stout and shorter than 4 th joint; last joint of labial palpus swollen and horseshoe-shaped. Pronotum transverse, anterior and posterior margin almost straight and same width, almost equal to the width of head; lateral margin of disk slightly straight, 1.5 times as the anterior margin. Tegmina reaching to middle part of the 10 th abdominal tergite, present with 2 oblique veins; mirror rather small, rhomboid, without dividing vein; hind wings absence. Fore tibiae with oblong external tympanum, without internal tympanum. Hind tibia with 4 internal spines, 5 external spines, apex separately 3 spurs, lower spur smallest; first tarsi longer, about 2.5 times as long as 2 nd joint, with two rows of small spines.

Supra anal plate ( Fig. 5 ) trapezoid, distinctly narrowed posteriorly; dorsal surface of plate uneven, with a nearly circular indentation in the middle. Subgenital plate rather long, coniform. Genitalia ( Figs. 7–9 ): epiphallus rather short, with two lateral lobes and one small middle lobe; apex of lateral lobes blunt and slightly bent upward in lateral view; middle lobe small, with wide and round apex; ectoparameres no reaching to apex of middle lobe.

Female ( Fig. 2 ). Body slightly larger than male. Tegmina nearly reaching to 8 th tergite of abdomen, dorsal field with several parallel longitudinal veins, cross veins sparse. Supra anal plate ( Fig. 6 ) very similar to that of male. Ovipositor short and straight, about 0.8 times as long as length of hind femur, apex acute.

Coloration. Body brown, tegmina black brown. All coxa, trochanters and most femora yellow, and the others brown to black brown. Ovipositor brown.

Measurements (mm). Male: body 10.5–11.0, pronotum width 2.5–3.0, length 1.7–2.7, tegmina 4.9–5.0; female: body 12.2–13.0, pronotum width:3.2–3.5, length:2.2–2.5, tegmina 4.5–4.8, ovipositor5.5–6.0.

Distribution. China (Yunnan).

Etymology. The specific name is derived from its type locality, Eryuan ( China: Yunnan).

Figures

FIGURES 1–2. Mitius eryuanensis Yuan, Xie & Liu sp. nov. 1. male; 2. female. Scale bars: 2.0 mm

FIGURES 3–6. Mitius eryuanensis Yuan, Xie & Liu sp. nov. 3, 4. Head, frontal view; 5, 6. Supra anal plate, dorsal view. 3, 5. Male; 4, 6. Female. Scale bars: 1.0 mm.

FIGURES 7–9. Mitius eryuanensis Yuan, Xie & Liu sp. nov. Male: genitalia (7. dorsal view; 8. ventral view; 9. lateral view). Scale bar: 0.5 mm.