Xizicus (Zangxizicus) tibeticus Wang, Jing, Liu, Li, 2014

Wang, Hanqiang, Jing, Jun, Liu, Xianwei & Li, Kai, 2014, Revision on genus Xizicus Gorochov (Orthoptera, Tettigoniidae, Meconematinae, Meconematini) with description of three new species form China, Zootaxa 3861 (4), pp. 301-316 : 309-311

Xizicus (Zangxizicus) tibeticus Wang, Jing, Liu, Li , sp. nov.

( Figs. 23–32 )

Materials. Holotype ♂, Chayu , Xizang, alt. 1900m, 2011.VII.7, leg. BI Wen-Xuan ; Paratype 1♀, Motuo , Xizang, alt. 1100m, 2011.VII.16, leg. BI Wen-Xuan.

Description. Male. Fastigium of vertex conical, apex little acute, furrowed on middle of disc. Metazona of pronotum little longer than prozona ( Fig. 25 ), hind margin of lateral lobe oblique, humeral sinus shallower. Tegminal apex far exceeding apex of hind femora and shorter than wings by 1.5 mm. All femora unarmed, fore coxa bearing a spine, fore tibia with ventral spines of type 4,5 (1,1) armed, tibial tympana oval, hind tibiae with 30 – 32 dorsal teeth each margin above also 3 pairs of apical spurs. Hind margin of 10 th abdominal tergite without any processes, slightly concave at middle, with a small lobe at each side ( Figs. 26, 29 ). Cerci robust, internal surface longitudinal concave, lower edge becoming a basal lobe and apical arm, upper edge rounded but pointed at terminal angle, edge between upper apical corner and lower arm sunken ( Figs. 26–27, 29–31 ). Subgenital plate specialized, basal half rounded and swollen, but contracted at middle, with a spine at each lateral angle of apex, largely the vestiges of styli, and a pair of small lobe at hind margin ( Figs. 27, 30 ).

Female. Fastigium of vertex little longer and more slender than that of male, last segment of maxillary palpi little longer than preceding. Lateral lobe of pronotum oblique at posterior margin, metazona shorter than prozona. Veins of tegmina more conspicuous. Cerci conical, base wider, apex acute; subgenital plate nearly trapezoid, a lateral angle on each side of base, midst little concave at posterior margin ( Figs. 28, 32 ). Ovipositor long, gently upcurved, tapering towards end ( Fig. 24 ), ventral valve bear a weak apical hook.

Coloration. Body yellowish brown. Disc of vertex with 4 dark longitudinal lines, converge at fastigium, upper margin of scrobe and three basal segments of antenna darkish brown, antenna with darkish rings. Dorsum of pronotum brownish, with dark discontinuous stripes laterally. Tegmina with conspicuous darkish spots, female wings darkish basally. Tibial spines and geniculum of male darkish, female genicular lobes darkish at apex, Four transverse bands of femora light-colored in male, absent in female. Dorsum of abdomen darkish in male, abdomen and ovipositor of female yellowish brown.

Measurement. (in mm) Body ♂ 11, ♀ 13.5; pronotum ♂ 4.6, ♀ 4.7; tegmina ♂ 19.2, ♀ 21.8; hind femora ♂ 12.1, ♀ 12.4; ovipositor ♀ 12.1.

Etymology. The specific epithet from Latinization of ‘Tibet’, where this species distributed.

Diagnosis. The apical spines of male subgenital plate reminds us of some Paraxizicus , but without membranous protrusions and posterior process of male 10 th abdominal tergite, also with the 4 transverse bands of the male hind femora and morphology of the female subgenital plate, it is more reasonable to regard this species as a Zangxizicus.

Distribution. China (Xizang).

Figures

FIGURES 23–32. Xizicus (Zangxizicus) tibeticus sp. nov. 23. Male body, lateral view; 24. Female body, lateral view; 25. Head and pronotum, dorsal view; 26, 29. Tip of male abdomen, dorsal view; 27, 30. Tip of male abdomen, ventral view; 31. Tip of male abdomen, lateral view; 28, 32. Female subgenital plate, ventral view.