The first report of subgenus Blacus Nees, 1819 (Hymenoptera, Braconidae, Brachistinae) from China Author Lu, Qian-Yu 0000-0001-9551-2380 State Key Lab of Rice Biology, Zhejiang University, Hangzhou 310058, China. & Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou 310058, China. & Zhejiang Provincial Key Laboratory of Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou 310058, China. & Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China. qylu@zju.edu.cn Author Chai, Hong-Fei 0009-0007-2672-7418 Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China. zjuchai@163.com Author Achterberg, Cornelis Van 0000-0002-6495-4853 Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China. kees@vanachterberg.org Author Tang, Pu 0000-0003-2296-9544 State Key Lab of Rice Biology, Zhejiang University, Hangzhou 310058, China. & Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou 310058, China. & Zhejiang Provincial Key Laboratory of Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou 310058, China. & Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China. ptang@zju.edu.cn Author Chen, Xue-Xin 0000-0002-9109-8853 State Key Lab of Rice Biology, Zhejiang University, Hangzhou 310058, China. & Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou 310058, China. & Zhejiang Provincial Key Laboratory of Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou 310058, China. & Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China. xxchen@zju.edu.cn text Zootaxa 2024 2024-06-21 5471 5 501 535 http://dx.doi.org/10.11646/zootaxa.5471.5.1 journal article 298867 10.11646/zootaxa.5471.5.1 5485ca3b-9572-4bbf-a216-054cf1e0494b 1175-5326 12207563 3D7BA3AC-A3BE-4F89-9178-D200841F052F Blacus ( Blacus ) rugifacialis sp. nov. ( Figs 25–26 ) Material examined. Holotype : ♀ , China , Zhejiang , Anji , Longwang Mtn , 26.VI.1996 , Hu Yilian, No. 963687 ( ZJUH ). Description. Female. Length of body 3.0 mm, length of fore wing 2.5 mm . Head. Antennomeres 17, slender ( Fig. 26D ); length of first flagellomere 1.3 × length of second flagellomere; length of first, second and penultimate flagellomere 4.2, 3.2 and 1.6 × their width, respectively; maxillary palp incomplete; occipital carina complete ( Fig. 26A ); frontal suture present; OOL: OD: POL = 13: 4: 6; length of eye in dorsal view 0.9 × length of temple; face distinctly rugose; malar suture absent, length of malar space 2.0 × basal width of mandible. Mesosoma. Length of mesosoma 1.8 × its height; side of pronotum rugose ventrally, smooth dorsally ( Fig. 26F ); precoxal sulcus complete, wide and reticulate-rugose ( Fig. 26F ); notauli complete, wide and distinctly crenulate ( Fig. 26D ); mesoscutal middle lobe sparsely pubescence, lateral lobes glabrous ( Fig. 26D ); scutellum rugose, its lateral carina complete, slightly protruding apically; propodeal tubercles absent; surface of propodeum reticulate-rugose, medial area present ( Fig. 26H ). Wings. Fore wing: parastigma distinctly differentiated from vein C+SC+R, first discal cell acute anteriorly; vein 3-SR+SR1 of fore wing straight; vein CUla of fore wing distinctly bent basally, distinctly below level of vein 2-CU1; 1-CU1: 2-CU1 = 1: 4; vein 2-M present and long ( Fig. 26E ). Legs. Hind coxa rugose dorsally; length of femur, tibia and basitarsus of hind leg 5.5, 10.75 and 9.7 × their width, respectively. Metasoma. Length of first tergite 1.7 × its apical width, slightly widened apically, reticulate-rugose ( Fig. 26H ); second tergite punctate basally, remainder of tergites slightly punctate ( Fig. 26H ); length of ovipositor sheath 1.5 × length of fore wing, 5.0 × length of hind femur, 3.5 × length of hind tibia ( Fig. 26I ). Colour. Black; half basal of antenna, mandible, clypeus, palpi and all legs yellow; propodeum and first metasomal tergite reddish-brown; remainder of metasoma, tegulae, apical half of antenna, pterostigma, parastigma, veins, ovipositor and sheath brown; wing membrane infuscated. FIGURE 25. Blacus rugifacialis sp. nov. (body, lateral aspect). FIGURE 26. Blacus rugifacialis sp. nov. A. head, dorsal aspect; B. head, anterior aspect; C. antenna; D. mesosoma, dorsal aspect; E. fore wing; F. mesosoma, lateral aspect; G. hind leg; H. propodeum and metasoma, dorsal aspect; I. ovipositor and ovipositor sheath. Male. Unknown. Biology. Unknown. Distribution. China ( Zhejiang ). Etymology. The specific name rugifacialis refers to the rugose face and is derived from “ ruga ” (Latin for wrinkle). Notes. The new species is similar to B. ( B. ) longicaudatus Tobias, 1976 because notauli are wide and distinctly crenulate, ovipositor sheath approx. as long as the body, parastigma distinctly differentiated from vein C+SC+R, vein CUla of fore wing distinctly bent basally, distinctly below level of vein, length of first metasomal tergite 1.7 × its apical width, and vein 3-SR+SR1 of fore wing straight, but differs by having scutellum rugose (mainly smooth in B. ( B. ) longicaudatus ), vein 2-M of fore wing comparatively long (comparatively short), medial area of propodeum present (absent), first discal cell acute widely anteriorly (truncate), scutellar sulcus with about 4 carinae (about 7 carinae), antenna comparatively slender apically (less slender), length of ovipositor sheath 1.5 × length of fore wing (0.97 ×), and face distinctly rugose (superficially rugose).