Ipodoryctes brevivenus Tang & Chen

Tang, Pu, Zhu, Lan-Lan, He, Jun-Hua & Chen, Xue-Xin, 2011, The genus Ipodoryctes Granger, 1949 (Hymenoptera: Braconidae, Doryctinae) from China, Zootaxa 2784, pp. 1-19 : 3-5

Ipodoryctes brevivenus Tang & Chen , sp. nov.

( Figs. 1–9 )

Description. FEMALE. Body length 5.3 mm; fore wing length 3.7 mm. Head. Width 1.3 times its median length. Antennae slender, almost filiform, with more than 41 segments (apical segments missing). Scapus 1.8 times as long as maximum width. First flagellar segment 5.0 times as long as its apical width, 1.2 times as long as second segment. Head behind eyes almost roundly narrowed in dorsal view. Eye 2.2 times as long as temple in dorsal view. Ocelli medium-sized, in triangle with base 1.3 times its sides. POL: OD: OOL= 4: 3: 7. Temple almost smooth ventrally. Vertex and frons coarsely and distinctly rugose. Vertex with very sparse, short setae. Eye glabrous, 1.3 times as high as broad. Face coarsely and distinctly rugose, its width almost equal to height of eye, 1.2 times height of face and clypeus combined. Malar space 0.3 times height of eye, 0.8 times as long as basal width of mandible. Malar suture absent. Occipital carina complete dorsally, fused with hypostomal carina ventrally.

Mesosoma. Length twice as long as its height. Pronotal carina fine, widely separated medially from posterior margin of pronotum; distances from carina to anterior and posterior margins of pronotum subequal. Mesoscutum entirely densely and evenly pubescent, densely rugose, highly and roundly raised above pronotum; its median lobe without median depression. Notauli deep, complete, crenulate. Scutellum sparsely granulate. Prescutellar depression deep, with three carinae, smooth between carinae, 0.4 times as long as scutellum. Mesopleuron almost smooth, transversely striate in upper half. Precoxal sulcus deep, long, almost smooth, running along entire lower part of mesopleuron, connected with prepectal carina. Prepectal carina distinct, wide ventrally, without widened lobes opposite to fore coxa. Propodeum with median carina in basal third; basolateral areas distinctly marginate, almost smooth; areola distinct marginate and wide.

Wings. Fore wing 3.7 times as long as maximum width. Vein r arising middle of pterostigma. 3-RS forming very obtuse angle with r, almost in line. 3-RS: r: SR1= 20: 13: 50. Second submarginal cell small, 2.6 times as long as maximum width, almost equal to first subdiscal cell, 0.7 times as long as first discal cell. 1-SR+R distinctly Scurved. m-cu interstitial. 1-CU1 1.1 times as long as cu-a. CU1a arising from anterior 1/3 of distal margin of first subdiscal cell. Hind wing vein M+CU 0.9 times as long as vein 1-M. m-cu weakly curved, interstitial, pigmented.

Legs. Hind coxa almost concentrically striate dorsally. Hind femur striate dorsally, smooth at most part, 3.4 times as long as wide, with distinct dorsal protuberance. Hind tibia with rather long, dense setae dorsally. Hind tarsus 1.1 times as long as hind tibia. Hind basitarsus equal to second–fifth segments combined; second tarsal segment 0.3 times as long as basitarsus, almost equal to fifth segment (except pretarsus).

Metasoma. 1.3 times as long as mesosoma and head combined, with six visible tergites. First tergite entirely coarsely striate, its apical width 2.2 times its minimum width; length almost equal to its maximum width. Second tergite mostly coarsely striate, with a distinct smooth basal area and a rather distinct, smooth apical area; median length of second tergite (with basal and apical areas) half as long as its basal width. Second suture deep and uniformly curved. Third–fourth tergites (except smooth in apical halves), fifth tergite (except smooth in apical 1/4) coarsely striate. Sixth tergite weakly enlarged, coarsely, densely and concentrically striate, but smooth basally, weakly regularly round on posterior margin, without median emargination. Ovipositor sheath 1.1 times as long as metasoma and 0.8 times as long as fore wing.

Colour. Body black. Antennae reddish brown to black. Palpi pale yellow. Legs light brown; hind coxa reddish brown; hind tibia black basally; fore and middle tarsi reddish brown, hind tarsus almost black. Wings infuscate. Pterostigma dark brown, lighter basally and apically.

Male. Unknown.

Material examined. Holotype. Ƥ, China, Hainan Prov., Diaoluoshan (18°40ʹN, 109°31ʹE), 1–2.VI.2007, Liu Jingxian, No. 200703901 ( ZJUH).

Distribution. China (Hainan).

Etymology. From Latin “brevi” meaning “short” and “vena” meaning “vein”.

Diagnosis. This new species is similar to I. annulicornis Belokobylskij , but differs in having the second submarginal cell of fore wing smaller, hind coxa reddish brown, and vertex coarsely and distinctly rugose.

Figures

FIGURES 1 – 9. Ipodoryctes brevivenus sp. nov. 1, habitus, lateral aspect; 2, head, dorsal aspect; 3, head, frontal aspect; 4, metasoma, lateral aspect; 5, fifth and sixth abdominal tergites, dorsal aspect; 6, first-fourth abdominal tergites, dorsal aspect; 7, fore wing; 8, hind wing; 9, mesosoma, lateral aspect. Scale bar 5.0 mm