Indabracon van Achterberg , 1992

Li, Yang, Tang, Pu & Chen, Xue-xin, 2020, The genus Indabracon van Achterberg (Hymenoptera, Braconidae, Braconinae) in China, with description of four new species, Journal of Hymenoptera Research 76, pp. 39-56 : 39

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

1	Pterostigma entirely dark brown, or apical 1/5 slightly paler or pale brown; T1 largely smooth, with a few striae antero-laterally and medially	2
-	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 grooves	4
2	Smooth 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 wing	I. 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 wing	3
3	Head 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 eyes	I. 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 eyes	I. albogilvus sp. nov.
4	Fore wing vein 1-SR+M at most weakly curved basally; basal half of pterostigma yellow and its apical half dark brown	I. bicolor
-	Fore wing vein 1-SR+M strongly curved basally; pterostigma largely yellow and its apical third mainly black	5
5	Scutellum black medially; T1 reddish yellow laterally; T4-5 entirely black; fore wing vein CU1b half as long as vein 3-CU1	I. 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-CU1	I. semicircularis sp. nov.

Figures

Figure 1. Indabracon albogilvus sp. nov., ♀, holotype, habitus lateral.

Figure 2. Indabracon albogilvus sp. nov., ♀, holotype a fore wing b hind wing c mesosoma, lateral view d mesosoma, dorsal view e metasoma, dorsal view f hind leg, lateral view g head, front view h head, dorsal view i head, lateral view j first metasomal tergite, dorsal view k scapus outer side, lateral view l apex of antenna m apex of ovipositor, lateral view.

Figure 3. Indabracon discolor sp. nov., ♀, holotype, habitus lateral.

Figure 4. Indabracon discolor sp. nov., ♀, holotype a fore wing b hind wing c mesosoma, lateral view d mesosoma, dorsal view e metasoma, dorsal view f hind leg, lateral view g head, front view h head, dorsal view i head, lateral view j first metasomal tergite, dorsal view k scapus outer side, lateral view l apex of antenna m apex of ovipositor, lateral view.

Figure 5. Indabracon nigricans sp. nov., ♀, holotype, habitus lateral.

Figure 6. Indabracon nigricans sp. nov., ♀, holotype a fore wing b hind wing c mesosoma, lateral view d mesosoma, dorsal view e metasoma, dorsal view f hind leg, lateral view g head, front view h head, dorsal view i head, lateral view j first metasomal tergite, dorsal view k scapus outer side, lateral view l apex of ovipositor, lateral view.

Figure 7. Indabracon semicircularis sp. nov., ♀, holotype, habitus lateral.

Figure 8. Indabracon semicircularis sp. nov., ♀, holotype a fore wing b hind wing c mesosoma, lateral view d mesosoma, dorsal view e metasoma, dorsal view f hind leg, lateral view g head, front view h head, dorsal view i head, lateral view j first metasomal tergite, dorsal view k scapus outer side, lateral view l apex of antenna m apex of ovipositor, lateral view.