Phaedrotoma antenervalis Li & van Achterberg

Li, Xi-Ying, Achterberg, Cornelis van & Tan, Ji-Cai, 2013, Revision of the subfamily Opiinae (Hymenoptera, Braconidae) from Hunan (China), including thirty-six new species and two new genera, ZooKeys 268, pp. 1-186: 77-79

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Phaedrotoma antenervalis Li & van Achterberg

sp. n.

Phaedrotoma antenervalis Li & van Achterberg   ZBK   sp. n. Figs 215-224

Type material.

Holotype, ♀ (ZUH), "S. China: Hunan, nr Zhangjiajie, Forest park Mts, 1.VIII.1989, Ben-Zhu Dai, No. 214".


Clypeus normal ventrally and semi-circular (Fig. 221); width of clypeus 2.8 times its maximum height; mesosoma yellowish-brown laterally and ventrally; pronotal side smooth; precoxal sulcus somewhat wider, in elliptical depression; anterior groove of metanotum crenulate (Fig. 215); propodeum usually largely rugose and medio-longitudinal carina absent (Fig. 217); vein SR1 of fore wing 2.6 times as long as vein 3-SR; vein m-cu of fore wing antefurcal (Fig. 216); vein 1r-m of hind wing distinctly oblique and 0.4 times vein 1-M (Fig. 216); second tergite densely and finely granulate-punctate (Fig. 218); setose part of ovipositor sheath 0.45 times as long as hind tibia (Fig. 223).


Holotype, ♀, length of body 1.8 mm, of fore wing 2.3 mm.

Head. Antenna with 32 segments and 1.4 times as long as fore wing; length of third segment 1.3 times fourth segment, length of third, fourth and penultimate segments 4.8, 3.8, and 2.0 times their width, respectively (Fig. 224); length of maxillary palp 0.5 times height of head; labial palp segments short; occipital carina moderately close to hypostomal carina (Fig. 221) and dorsally absent; hypostomal carina narrow; length of eye in dorsal view 2.0 times temple; frons glabrous, smooth, evenly flattened; face smooth, medially weakly elevated; width of clypeus 2.8 times its maximum height and 0.5 times width of face; clypeus convex, protruding forwards, superficially punctate dorsally and its ventral margin thin and slightly concave (Figs 220, 221); hypoclypeal depression large (Fig. 220); malar suture absent; mandible gradually widened basally and with a narrow ventral carina (Fig. 221).

Mesosoma. Length of mesosoma 1.2 times its height; dorsal pronope large and round (Fig. 222); pronotal side smooth and posterior groove absent (Fig. 215); epicnemial area smooth dorsally; precoxal sulcus only medially impressed, widely and finely crenulate, smooth as rest of mesopleuron (Fig. 215); pleural sulcus smooth; anterior groove of metapleuron crenulate; notauli absent on disc, only anteriorly indicated by shallow depressions (Fig. 217); mesoscutum smooth and glabrous; medio-posterior depression of mesoscutum absent; lateral carina of mesoscutum largely absent; scutellar sulcus moderately crenulate; scutellum smooth and flattened; surface of propodeum largely rugose (Fig. 217).

Wings. Fore wing (Fig. 216): pterostigma elliptical, narrowed apically; 1-R1 reaching wing apex and 1.3 times as long as pterostigma; r:3-SR:SR1= 3:31:80; 2-SR:3-SR:r-m = 17:31:7; r normal; 1-M slightly curved; SR1 slightly sinuate; m-cu antefurcal; cu-a postfurcal and 1-CU1 widened; first subdiscal cell closed, CU1b short. Hind wing (Fig. 216): M+CU:1-M:1r-m = 18:24:10; cu-a straight; m-cu absent.

Legs. Length of femur, tibia and basitarsus of hind leg 3.8, 7.1 and 6.5 times as long as wide, respectively; hind femur with long setae and of tibia medium-sized (Fig. 219).

Metasoma. Length of first tergite about equal to its apical width, its surface evenly gradually convex medially, longitudinally rugose and with dorsal carinae remain separated from each other and reaching apex of tergite (Fig. 218); second tergite densely and finely granulate-punctate (Fig. 218); third and following tergites smooth; length of ventrally visible setose part of ovipositor sheath 0.11times fore wing and 0.45 times hind tibia (Figs 215, 223).

Colour. Yellow; antenna, mesosoma laterally and ventrally, third and following tergites and ovipositor sheath yellowish-brown; pterostigma and veins brown; wing membrane subhyaline.

Molecular data. None.


*China (Hunan).




Name derived from “ante” (Latin for “before”) and “nervus” (Latin for nerve or vein), because of the antefurcal vein m-cu of fore wing.


The new species runs in the key by Chen and Weng (2005) to Phaedrotoma osculas   (Weng & Chen, 2005) comb. n. Phaedrotoma antenervalis   differs by having the setose part of ovipositor sheath distinctly longer than the first tergite (0.8 times in Phaedrotoma osculas   ), length of the maxillary palp about equal to height of head (1.2 times) and the propodeum densely rugulose anteriorly (smooth).