Xizicus (Eoxizicus) gaoligongshanensis Cui, Liu & Shi, 2020

Cui, Peng, Liu, Qing & Shi, Fuming, 2020, Two new species of the genus Xizicus Gorochov, 1993 (Tettigoniidae: Meconematinae: Meconematini) from Gaoligongshan, Yunnan, China, Zootaxa 4748 (1), pp. 44-50 : 44-50

2. Xizicus (Eoxizicus) gaoligongshanensis Cui, Liu & Shi sp. nov.

( Fig. 2 )

Description. Male. Body small. Fastigium verticis conical, apex slightly rounded, with a distinct longitudinal sulcus. Eyes semiglobular and protruding forward. Apical segment of maxillary palpi about equal to subapical one in length, faintly inflated apically.

Anterior margin of pronotum nearly straight, posterior margin obtusely rounded ( Fig. 2A ); lateral lobes with height nearly equal to length; humeral sinus shallow ( Fig. 2B ). Thoracic foramen exposed, ovoid ( Fig. 2B ). Tegmina extending beyond apices of metafemora distinctly; hind wings longer than tegmina by approximately 2 mm. Procoxae with a spine; tibial tympana open on both sides. Protibiae with 6 outer and 5 inner spines on ventral surface, and 2 outer apical and 1 inner apical spines shorter than others. Mesotibiae with 6 outer and 5 inner spines on ventral surface, and 2 outer apical and 1 inner apical spines shorter than others. Metatibiae with 22–24 outer and inner spines on dorsal surface as well as 1 pair of dorsal apical spurs and 2 pairs of ventral apical spurs.

Posterior margin of tenth abdominal tergite with a pair of small posterior processes, area between them slightly concave ( Fig. 2F ). Cercus with basal half stout; internal margin of basal half with a process triangularly expanded, apical area curved dorsad, apex acute; apical half slender and apex bluntly rounded ( Fig. 2 C–F). Subgenital plate nearly rectangle (somewhat deformed), posterior margin feebly concave. Styli short, conical, apices rounded, inserted on apices of lateral margins of subgenital plate.

Colouration. Body yellowish green (when alive greenish). Pronotal disc with a pair of blackish brown longitudinal stripes ( Fig. 2A ). Posterior margins of left and right tegmina with blackish brown stripes constituting about 3/4 of the whole tegmen length. Metafemoral genicular lobes with a black spot on inner and outer sides separately, and spines of metatibiae on dorsal surface blackish brown.

Female. Appearance is similar to male. Ninth abdominal tergite with middle area narrower, lateral areas extended triangularly backward. Tenth abdominal tergite split longitudinally. Epiproct nearly triangular. Cerci conical and apices thin and acute. Subgenital plate trapezoid with basal half narrow and apical half wide, with one conspicuous transverse fold in the middle, and posterior margin slightly concave ( Fig. 2I ). Ovipositor with apical half slightly curved dorsad, basal area stout; dorsal valvulae with apices acute and ventral ones with apices hook-shaped ( Fig. 2H ).

Material examined. Holotype: ♂, Gaoligongshan, Baoshan , Yunnan, Alt. 2060m, N. 25.2995º, E. 98.7836º, 16 September, 2019, coll. Peng Cui. Paratype: 1♀, other data same to the holotype.

Measurements (mm). Body: ♂ 11.5, ♀ 14.0; pronotum: ♂ 3.8, ♀ 4.3; tegmina: ♂ 22.0, ♀ 24.0; metafemora: ♂ 11.0, ♀ 12.5; ovipositor: 12.2.

Distribution. China (Yunnan).

Discussion. The new species resembles Xizicus (Eoxizicus) kulingensis ( Tinkham, 1943) , but differs from the latter in male cercus bearing a process triangularly expanded on the base, in female subgenital plate with one obvious transverse fold in the middle.

Etymology. The name of the new species is originated from the type locality.

Figures

FIGURE 2. Xizicus (Eoxizicus) gaoligongshanensis Cui, Liu & Shi sp. nov., male: A–B. head and pronotum:A. dorsal view; B. lateral view; C–G. apex of abdomen: C, E. dorso-lateral view; D, G. ventral view; F. apical view; female: H. ovipositor in lateral view; I. subgenital plate in ventral view.