Paragavialidium Zheng, 1994

Deng, Weian, Zheng, Zhemin, Wei, Shizhen & Lin, Minping, 2012, A systematic study of the genus Paragavialidium Zheng (Orthoptera: Tetrigoidea: Scelimeninae), Zootaxa 3582, pp. 48-56 : 52

Genus Paragavialidium Zheng, 1994

Paragavialidium Zheng, 1994:1 ; Liang & Zheng, 1998: 70; Zheng, 2005: 73; Deng, Zheng and Wei, 2007: 62. Type species: Paragavialidium curvispinum Zheng, 1994 by original designation.

Redescription. Body size large, dark brown. Width of vertex about 1.5–2.9 times wider than width of one eye, vertex not protruding beyond eyes. Antenna filiform, inserted distinctly below lower margins of eyes. Eyes globose. Disc of pronotum with numerous coarse tubercles, midkeel of pronotum unconspicuous, middle of anterior margin of pronotum with a finger-shaped elevated process ( Figs. 10–17 ), fore edge of the pronotum with a distinct obtuse projecting below eyes ( Figs. 2–9 ), humeral angles of pronotum obtuse ( Figs. 6, 8, 9 ), posterior angles of lateral lobes of pronotum produced into sharp spines, straight ( Figs. 2–3 ) or directed curved forwards ( Figs. 4–9 ), pronotal process extending beyond top of hind femora. Tegmina elongate, ovate ( Figs. 11–12 ). Hind wings reaching apex of hind process. Upper margins of fore and middle femur with two or three large teeth ( Figs. 14–17 ), hind femur with a row of tubercules on median keel of lower side ( Fig. 17 ). First segment of posterior tarsi longer than third.

Relationship to other genera. Based on the shape of filiform antenna, posterior angles of lateral lobes of pronotum produced into sharp spines, Paragavialidium Zheng was placed into Scelimeninae (Tetrigidae) . Paragavialidium Zheng is closely related to Eugavialidium Hancock , with which it shares the front margin of the pronotum with a produced tubercle at the middle above the occiput. It differs by the pronotum with distinctly outwarded humeral angles, the margin of the hind tibiae and first joint of the posterior tarsi without expanded.

Figures

FIGURE 10 – 17. 10: Body of P. tridentatum Zheng, lateral view; 11: Body of P. emeiensis Zheng et Cao, lateral view; 12: Head and pronotum of P. orthacanum Zheng, lateral view; 13: Body of P. l o n g z h o u e n s i s Zheng et Jiang, lateral view; 14: Body of P. serrifemura Zheng et Cao, lateral view; 15: Body of P. curivispinum Zheng, lateral view; 16: Body of P. sichuanensis Zheng, Wang et Shi, lateral view; 17: Body of P. hainanensis (Zheng et Liang), lateral view.

FIGURE 2 – 9. 2: Head and pronotum of P. orthacanum Zheng, dorsal view; 3: Head and pronotum of P. emeiensis Zheng et Cao, dorsal view; 4: Head and pronotum of P. longzhouensis Zheng et Jiang, dorsal view; 5: Body of P. tridentatum Zheng, dorsal view; 6: Head and pronotum of P. serrifemura Zheng et Cao, dorsal view; 7: Head and pronotum of P. curivispinum Zheng, dorsal view; 8: Head and pronotum of P. sichuanensis Zheng, Wang et Shi, dorsal view; 9: Head and pronotum of P. hainanensis (Zheng et Liang), dorsal view.