Genus Indabracon van Achterberg, 1992

Figs 1, 2, 3, 4, 5, 6, 7, 8

Indabracon van Achterberg, 1992: 384; Yang, Chen and Liu 2006: 319; Chen and Yang 2006: 122. Type species: Spinaria trimaculata Cameron, 1900.

Diagnosis.

Body medium-sized, body length 6.0-10.0 mm; terminal flagellomere often strongly acute apically; in lateral view scapus gradually narrowed basally, without double margin at inner side apically and concave apico-laterally, ventrally weakly to distinctly longer than dorsally; eye glabrous, not or weakly emarginated; face with few rugae and rugulae or some punctures; clypeus moderately narrow, without dorsal carina; malar suture absent or present, sometimes sculptured; labio-maxillary complex normal, not elongate; frons nearly flat, with some setae and a strong median groove; mesosoma largely smooth and shiny; notauli shallow, and only present anteriorly; pleural sulcus smooth, absent medially; mesosternal sulcus smooth, shallow; antescutal depression and metapleural flange narrow, sometimes protruding anteriorly; scutellar sulcus moderately wide and crenulate; metanotum strongly convex medially, and with a short median carina anteriorly; propodeum largely smooth, without medio-longitudinal carina or groove, sometimes with short crenulae posteriorly; propodeal spiracle round, near middle of propodeum, and without tubercle above it; angle between veins 1-SR and C+SC+R of fore wing about 50°; fore wing vein 1-SR+M slightly to strongly bent subbasally; fore wing vein cu-a interstitial or narrowly postfurcal; fore wing vein 1-M straight; fore wing vein CU1b medium-sized to long (slightly shorter than vein 3-CU1), slender and reclivous; fore wing vein m-cu converging to vein 1-M posteriorly; fore wing vein 1-R1 much longer than pterostigma, ending distad of apex of vein 3-M; vein 3-CU1 of fore wing slender; fore wing vein r oblique and shorter than width of pterostigma; second submarginal cell of fore wing long, and subparallel-sided; hind wing vein SC+R1 distinctly longer than vein 1r-m; hind wing with 2 bristles baso-anteriorly and with 3 hamuli on vein R1, membrane largely glabrous near vein cu-a; tarsal claws without lobe, with setae, but often pectinate basally; metasomal tergites often largely sculptured; T1 movably joined to T2; T1 median area strongly convex and sculptured, with angulate sides and a medio-longitudinal carina; T1 lateral areas wide; T1 with dorsal carinae but absent basally; T2 with small smooth medio-basal area, often smooth, rarely rugose, and connected to median carina posteriorly, lateral grooves wide; second metasomal suture deep and crenulate; T3-4 with antero-lateral grooves, and latero-posterior corner protruding, more or less smooth; T2-4 with sharp lateral crease; T3-5 with transverse posterior grooves (sometimes absent on T3); hypopygium medium-sized and apically acute, not emarginate medio-apically; ovipositor normal, subapically upper valve with nodus, and its lower valve with teeth ventrally.

Biology.

Unknown.

Distribution.

Oriental.

Key to Chinese species of the genus Indabracon van Achterberg

1Pterostigma entirely dark brown, or apical 1/5 slightly paler or pale brown; T1 largely smooth, with a few striae antero-laterally and medially2
-At least basal half of pterostigma yellow and remainder dark brown, sometimes with black spots basally and its apical third; T1 largely coarsely sculptured, especially median area and lateral grooves4
2Smooth postero-lateral areas of T3 large; scutellum pale yellowish brown; fore wing vein 1-SR+M at most weakly curved; T1 pale yellowish brown laterally and its median area black; ovipositor sheath about 0.75 times as long as fore wingI. trimaculatus
-Smooth postero-lateral areas of T3 small; scutellum black or reddish brown; fore wing vein 1-SR+M strongly curved basally; T1 entirely whitish yellow; ovipositor sheath 0.4-0.6 times as long as fore wing3
3Head largely reddish brown, face reddish yellow; mesoscutum reddish brown; hind wing vein 2-SC+R longer than vein 1r-m; in dorsal view length of eye 3.0 times temple; temples strongly narrowed behind eyesI. discolor sp. nov.
-Head largely yellow; mesoscutum yellow, but middle lobe anteriorly and lateral lobes with a black spot; hind wing vein 2-SC+R shorter than vein 1r-m; in dorsal view length of eye 2.6 times temple; temples linearly narrowed behind eyesI. albogilvus sp. nov.
4Fore wing vein 1-SR+M at most weakly curved basally; basal half of pterostigma yellow and its apical half dark brownI. bicolor
-Fore wing vein 1-SR+M strongly curved basally; pterostigma largely yellow and its apical third mainly black5
5Scutellum black medially; T1 reddish yellow laterally; T4-5 entirely black; fore wing vein CU1b half as long as vein 3-CU1I. nigricans sp. nov.
-Scutellum yellow medially; T1 black laterally; T4-5 pale yellow laterally, T4 with a large black mark medially, not reaching posterior margin of tergite, and T5 with a semicircular black mark medio-basally; fore wing vein CU1b 0.7 times as long as vein 3-CU1I. semicircularis sp. nov.