Tanycarpa gymnonotum Yao, sp. n.

Tanycarpa gymnonotum Yao, sp. n.

(Figs. 8–14)

Type material. Holotype: ♀ China, Hubei: Shennongjia, Tianmenya, 21–VIII–2000, Jianquan Yang (FAFU). Paratypes: 1 ♂ China, Hubei: Shennongjia, Hongping, 20–VIII–2000, Juchang Huang (FAFU).

Diagnosis. Frons glabrous except a few setae laterally and vertex setiferous (Fig. 8); mesoscutum smooth and setiferous (Fig. 11); propodeum rugulose to rugose mesobasally, with pentagonal areola apically, rest of propodeum almost smooth (Fig. 12); T1 long and narrow, 1.64–1.90× longer than apical width, ovipositor as long as metasoma.

Female (Figs. 8–14). Head. Antenna with 25 flagellomeres, 1st flagellomere 1.37× longer than 2nd flagellomere, 1st and 2nd flagellomeres 3.70× and 2.70× longer than their widths, respectively; eye glabrous, 1.50× longer than temple length in dorsal view (Fig. 8); temple roundly expanded behind eye (Fig. 8); frons almost flat, glabrous; occipital tubercles completely absent; face somewhat convex and temple glabrous; anterior tentorial pits medium-sized, deep; clypeus convex, punctulate; ventral margin of clypeus straight; head 1.75× wider than medial height (Fig. 8); mandible expanded apically, 1.80× longer than wide, 3rd tooth large, round, clearly separated from 2nd tooth with deep notch, 2nd tooth wide, length subequal to width basally, pointed apically, 1st tooth smaller than 3rd tooth, with hemispherical incision between 1st and 2nd tooth (Fig. 9).

Mesosoma. 1.40× longer than high; propleuron smooth (Fig. 10); mesoscutum 0.80× longer than wide (Fig. 11); notauli distinctly crenulate basally, present in anterior 1/3 of mesoscutum, obliterated posteriorly, and slightly longer than midpit length; midpit long and narrow, almost 1/4 of mesoscutum length (Fig. 11); scutellar sulcus deep, wide and with 1 rather weak longitudinal carina (Fig. 12); subalar area almost smooth; precoxal sulcus complete, wide and deeply crenulate medially, narrower anteriorly and posteriorly than mesally (Fig. 10); scutellar disc convex, glabrous; propodeum with rugose longitudinal ridge basally, with pentagonal areola, with several irregular long ridges around areola, otherwise almost smooth (Fig. 12).

Wings. Pterostigma narrowly elliptical; 3RSb straight; 1cu-a small, postfurcal; 1CU1:1CU2=1:15; 1st subdiscal cell closed; r:3RSa:3RSb:2RS:r-m=5:20:65:20:8; 2nd submarginal cell 1.94× longer than wide; 2CUb arising from middle of 1st subdiscal cell (Fig. 13).

Legs. Hind leg almost smooth; tarsal claws slender, simple and large; femur, tibia, and basitarsus of hind leg 5.00×, 7.90×, and 7.00× longer than their widths, respectively.

Metasoma. T1 1.64× longer than apical width, medially protruding, smooth laterally, rugose dorsal posteriorly; spiracles subdorsal, protruding (Fig. 14); dorsal carinae weakly developed, not converging; laterope medium-sized and wide; ovipositor sheath as long as metasoma, 1.90× longer than T1, 0.73× longer than hind tibia (Fig. 13).

Color. Body dark brown; mandible dark yellow, apex of tooth 2 reddish brown; antenna light brown; inner surface of legs pale yellow and outer surface light brown, apical 0.65 of hind tibia and entire tarsus infuscate, hind tibia otherwise yellow; pterostigma light brown; metasoma except T1 reddish brown.

Male. As in female except: T1 apical width almost as wide as basal width. Antenna with 28 flagellomeres, 1st flagellomere 1.42× longer than 2nd flagellomere, penultimate flagellomere 2.50× longer than width; temple length 1.15× longer than eye in dorsal view; head 2.00× longer than high. Mesosoma 1.50× longer than its height; precoxal sulcus 2/3 length of mesopleuron; midpit long and narrow, almost 1/3 mesoscutum length; fore wing 1CU1:2CUa=1:7; 1st subdiscal cell closed; r:3RSa:3RSb:2RS:r-m = 4:18:58:16:7; 2nd submarginal cell 2.15× longer than wide; 2CUb arising below 2-1A of 1st subdiscal cell; femur, tibia, and basitarsus of hind leg 6.00×, 10.00×, and 6.30× longer than their widths respectively; metasoma 0.40× length of fore wing. T1 1.90× longer than apical width.

Etymology. This species name refers to the posterior of mesoscutum, which is nearly devoid of setae.

Distribution. China (Hubei).

Remarks. Differences between the male and female are minor. In female specimens 2CUb arises from the middle of the 1st subdiscal cell; in the male it arises below the middle of 1st subdiscal cell. In the male specimen, the 2nd submarginal cell is more slender than in the female specimen.

Tanycarpa stribog and T. gymnonotum are closest to each other morphologically in that the mesoscutum at most has sparse pubescence. The biggest differences are in T. stribog the mesoscutum has pubescence anteriorly and along the notauli lines, the propodeum has a clear longitudinal medial ridge, and T1 is short; in T. gymnonotum the mesoscutum is smooth and setiferous (Fig. 11), the propodeum lacks a clear longitudinal ridge, and T1 is longer.