Elimaea (Rhaebelimaea) vicinia Liu

Liu, Chun-Xiang & Liu, Xian-Wei, 2011, Elimaea Stål (Orthoptera: Tettigoniidae: Phaneropterinae) and its relative from China, with description of twenty-three new species, Zootaxa 3020, pp. 1-48 : 39-41

Elimaea (Rhaebelimaea) vicinia Liu C-X & Liu X-W, sp. nov. (Plate 13d, 19g –k, 21a–f)

Holotype: male (No. 14520618), China: Guangxi Prov., Jinxiu, at the foot of Shengtangshan Mt., Dishui, 500– 700m, 1981. X.20, Coll. Jin Gentao, Li ( MSIE).

Description: Holotype (male). Tegmen distinctly surpassing apex of hind femur; hind wings much longer than tegmen; radius sector branching in basal 1/3 part of tegmen, and bifurcate near apical 1/5 part; and R without other stems. Fore coxae unarmed. Fore femur with 4–7 interior ventral spines; mid femur with 12 exterior ventral spines; hind femur lost. Genicular lobes of each femur bispinose. Fore and mid tibiae sulcate, without dorsal spines.

PLATE 21, Color photograph of Elimaea vicinia sp. nov. (a–f), and Elimaea yongningensis sp. nov. (g–k). a,g, lateral lobe of pronotum of male, lateral view; b, h, male left stridulatory area, dorsal view; c, i, male right stridulatory area, dorsal view; d, male abdominal apex, dorsal view; e, k, male abdominal apex, lateral view; f, j, male subgenital plate, apico-ventral view.

Stridulatory file with circa 28 widely spaced large stridulatory teeth, which are of equal size, except 6 densely arranged small teeth at apical part (Plate 13d). Tenth abodominal tegum slightly extending, with truncate apical margin (Plate 19g, 21d). Epiproct long sheet-like, horizontal produced, basal 1/8 part with parallel lateral margins, broadening mediad, and then gradually acuminated distad, apical margin with a wide obtuse triangular notch (Plate 19h, 21d). Cerci gradually narrowed in basal 1/3 part, distal 2/3 part approximately columniform, with a retrocurved spine at apex (Plate 19j,k, 21d,e). Subgenital plate of moderate length, curved backward in lateral view; basal margin widest, then abruptly narrowed to the middle; sharply narrowly excised at apical half part, into two subparallel lateral lobes (Plate 19i, 21f).

Color: Body yellowish green (probably green in life). Compound eyes brown. Longitudinal midline of occiput and pronotal disc rose. Pronotal disc densely covered with numerous brown dots. Spines of each femur black. Proximal area in tegminal stridulatory area with a large black spot. Distal half part of tegminal costal area with a few brown dots, each cell between R and Rs veins with a few brown spots, area near posterior margin with numerous dark brown dots. Apical spine of cerci red brown.

Female unknown.

Measurement of male (mm): length of body 18.5; length of pronotum 4.5; length of tegmen 38.5; largest width of male stridulatory area 3.0; length of male stridulatory vein 2.3; largest width of dorsal area behind male stridulatory area 2.5; width of mirror on right tegmen 1.5; length of mirror on right tegmen 1.8; distance between basal vein of right tegmen and apex of mirror on right tegmen 2.5; width of tegmen 5.5; length of hind wing 41.5; length of fore femur 8.1; length of mid femur 11.9; length of epiproct 3.0; length of cerci 4.5; length of subgenital plate 5.9.

Etymology: The name shows that the new species possesses radius sector branches near the proximal part of tegmen.

Discussion: This new species is distinguished from other species in the subgenus Rhaebelimaea by the radius sector branching in basal 1/3 part of tegmen. It most resembles E. (Rhaebelimaea) catba Gorochov, 2009 in shape of the male stridulatory area, of the male epiproct, and of the male cerci, but additionally distinctly differs by the male subgenital plate, which is strongly upcurved in distal 1/3 part, and possesses straight medial edge of hind lateral lobes.

Distribution: China: Guangxi Prov.