Diestrammena (Gymnaeta) longilamina, Zhang, Feng & Liu, Xian-Wei, 2009

Zhang, Feng & Liu, Xian-Wei, 2009, A review of the subgenus Diestrammena (Gymnaeta) from China (Orthoptera: Rhaphidophoridae Aemodogryllinae), Zootaxa 2272, pp. 21-36 : 25-26

Diestrammena (Gymnaeta) longilamina sp. n. ( Figs. 11–12 )

Diagnosis. Female. Head with fastigium of vertex divided into two conical tubercles. Legs long and slender; Fore femora about 1.5 times as long as the pronotum, beneath unarmed, the internal knee lobe without spine, external knee lobe with 1 long movable spur; fore tibiae beneath with 1 internal and 1–2 external spurs, a small median spine between the paired apical spurs. Mid femora with internal and external knee lobe with 1 long movable spur; mid tibiae beneath with 1 external and 1 internal spur, a short spine between the paired apical spurs. Hind femora unarmed beneath, hind tibiae armed on each dorsal margin with 68–76 spines, which grouped in series, super internal spur of hind tibiae shorter than the metatarsus ( Fig. 11 ), hind tarsus with bristles beneath. Subgenital plate long triangular, with narrowly rounded apex ( Fig. 12 ).

Coloration. Body yellowish brown, mottled with dark brown blotches, legs yellowish. Measurements (in mm): Length of body Ƥ10.0; pronotum Ƥ4.0; fore femora Ƥ6.0, hind femora Ƥ11.0– 12.0; ovipositor Ƥ7.5.

Holotype Ƥ, Paratypes 3ƤƤ, Sichuan (Luding Hailuogou), alt. 2980m, leg. Liu Xian-Wei et al.

Discussion. This new species resembles D. (G..) wuyishanica , but differs in the legs being shorter and longer than subgenital plate of female.

Distribution. Known only from China (Sichuan).

Figures

FIGURES 11 – 12. Diestrammena (Gymnaeta) longilamina sp. n. 11, Tarsus of hind leg, lateral view; 12, Female subgenital plate, ventral view.