Hysterobolus Viereck, 1913

Lu, Qian-Yu, Achterberg, Cornelis Van, Tang, Pu & Chen, Xue-Xin, 2023, The discovery of the subgenus Hysterobolus Viereck, 1913 (Hymenoptera, Braconidae, Brachistinae, Blacini, Blacus) in China, with description of nine new species, Zootaxa 5293 (3), pp. 472-498 : 473

publication ID	https://doi.org/10.11646/zootaxa.5293.3.3
publication LSID	lsid:zoobank.org:pub:BC5775A5-FE42-4706-848C-E31A3F505175
DOI	https://doi.org/10.5281/zenodo.7982635
persistent identifier	https://treatment.plazi.org/id/03F0879C-5379-FFC6-FF77-EC01FA02F930
treatment provided by	Plazi
scientific name	Hysterobolus Viereck
status

Treatment

Key to Chinese species of subgenus Hysterobolus Viereck

1 Vein M+CU of hind wing distinctly shorter than vein 1-M; penultimate flagellomere quadrate, about as long as wide ( Fig. 6C View FIGURE 6 ); length of malar space 3.0 × to basal width of mandible; first metasomal tergite about 2.1 × longer than its apical width ( Fig. 6F View FIGURE 6 )......................................................................... B. ( H.) laculaticornis sp. nov.

- Vein M+CU of hind wing about subequal to vein 1-M; penultimate flagellomere distinctly longer than wide ( Fig. 8D View FIGURE 8 ); length of malar space at most 2.8 × basal width of mandible; first tergite usually 1.5–1.8 × longer than wide apically ( Figs 2H View FIGURE 2 , 4H View FIGURE 4 , 8E View FIGURE 8 , 10J View FIGURE 10 , 12F View FIGURE 12 , 16F View FIGURE 16 , 18E View FIGURE 18 ), except in B. variegatus ( Fig.14E View FIGURE 14 )........................................................ 2

2 Length of vein r of fore wing almost equal to width of pterostigma; antennomeres 20; length of hind basitarsus 10.0 × its width; head yellow....................................................................... B. ( H.) flaviceps sp. nov.

- Length of vein r of fore wing 1.1–1.5 × width of pterostigma; antennomeres less than 20; length of hind basitarsus 7.1–8.8 × its width; colour of head variable........................................................................... 3

3 Malar suture present................................................................................... 4

- Malar suture absent.................................................................................... 5

4 Vein 2-CU1 of fore wing 1.2 × longer than vein 1-CU1 ( Fig. 18F View FIGURE 18 ); face largely smooth; precoxal sulcus narrow, striae very short ( Fig. 18G View FIGURE 18 )..................................................................... B. ( H.) yunnanensis sp. nov.

- vein 2-CU1 of fore wing 2.2 × longer than vein 1-CU1( Fig. 20I View FIGURE 20 ); face transversely rugose; precoxal sulcus wide, striae long ( Fig. 20F View FIGURE 20 )............................................................ B. ( H.) chabarovi Belokobylskij, 1995 View in CoL

5 Hind tibia yellow or reddish-brown....................................................................... 6

- Hind tibia dark brown or blackish-brown.................................................................. 8

6 First metasomal tergite 1.5 × longer than its apical width ( Fig. 8E View FIGURE 8 ); length of pterostigma 3.5 × its maximum width; length of terminal flagellomere 3.0 × its width; body generally black............................. B. ( H.) longiapicalis sp. nov.

- First tergite 1.7–2.1 × longer than its apical width; length of pterostigma 5.0 × its maximum width; length of terminal flagellomere 2.8 × its width; body generally reddish-brown............................................................... 7

7 Length of first flagellomere 1.7 × second flagellomere; scutellum smooth medially; antennomeres 18; occiput slightly concave ( Fig. 14A View FIGURE 14 ); hind tibia reddish-brown; 2–3 apical flagellomeres dark brown; first metasomal tergite about 2.1 × longer than its apical width ( Fig. 14E View FIGURE 14 )............................................................ B. ( H.) variegatus sp. nov.

- Length of first flagellomere 1.4 × second flagellomere; scutellum rugose medially; antennomeres 19; occiput distinctly concave ( Fig. 10A View FIGURE 10 ); hind tibia yellow; 5–6 apical flagellomeres dark brown; first tergite 1.7–1.8 × longer than its apical width ( Fig. 10J View FIGURE 10 )........................................................................ B. (H.) melanoapicalis sp. nov.

8 Fore claw of ♀ with blackish bristles ( Fig. 12I View FIGURE 12 ); face weakly rugose ( Fig. 12B View FIGURE 12 ); striae of precoxal sulcus medium-sized; vein 2-1A of hind wing absent ( Fig. 12H View FIGURE 12 )...................................................... B. ( H.) niger sp. nov.

- Fore claw of ♀ with brownish bristles ( Figs 2J View FIGURE 2 , 16I View FIGURE 16 ); face coarsely rugose ( Figs 2B View FIGURE 2 , 16B View FIGURE 16 ); striae of precoxal sulcus long; vein 2-1A of hind wing present ( Figs 2M View FIGURE 2 , 18F View FIGURE 18 ).................................................................. 9

9 Terminal flagellomere 2.7–2.9 × longer than wide; first discal cell of fore wing acute ( Fig. 16H View FIGURE 16 ); setose part of ovipositor sheath slightly longer, 0.21 × length of fore wing; mesoscutum largely dark brown to black; hind femur dark brown to blackish-brown............................................................................... B. ( H.) xui sp. nov.

- Terminal flagellomere about 2.2 × longer than wide; first discal cell of fore wing truncate ( Fig. 2L View FIGURE 2 ); setose part of ovipositor sheath slightly shorter, 0.18 × length of fore wing; mesoscutum yellowish-brown; hind femur yellow............................................................................................. B. ( H.) baishanzuensis sp. nov.