Six new braconid wasps of the genus Colastomion Baker, 1917 (Hymenoptera: Braconidae: Rogadinae) from Vietnam Author Oanh, Nguyen Thi 0000-0002-3265-0580 Dong Thap University, Cao Lanh City, Dong Thap, Vietnam & ntoanh @ dthu. edu. vn; https: // orcid. org / 0000 - 0002 - 3265 - 0580 ntoanh@dthu.edu.vn Author Dzuong, Nguyen Van 0000-0003-2363-0088 Tay Bac University, Son La City, Vietnam & duongdhtb @ gmail. com; https: // orcid. org / 0000 - 0003 - 2363 - 0088 duongdhtb@gmail.com Author Long, Khuat Dang Institute of Ecology & Biological Resources (IEBR), Vietnam Academy of Science & Technology (VAST), 18 Hoang Quoc Viet Road, Cau Giay, Ha Noi, Vietnam Author Lam, Pham Van 0000-0002-6238-8800 National Institute of Plant Protection (NIPP), Duc Thang, Bac Tu Liem District, Ha Noi, Vietnam & gdct _ lam @ yahoo. com; https: // orcid. org / 0000 - 0002 - 6238 - 8800 gdct_lam@yahoo.com Author Nhi, Pham Thi 0001-0002-9304-9863 Institute of Ecology & Biological Resources (IEBR), Vietnam Academy of Science & Technology (VAST), 18 Hoang Quoc Viet Road, Cau Giay, Ha Noi, Vietnam & ptnhi 2 @ yahoo. com; https: // orcid. org / 0001 - 0002 - 9304 - 9863 ptnhi2@yahoo.com Author Hoa, Dang Thi 0000-0002-8312-2825 Institute of Ecology & Biological Resources (IEBR), Vietnam Academy of Science & Technology (VAST), 18 Hoang Quoc Viet Road, Cau Giay, Ha Noi, Vietnam & danghoa. iebr @ gmail. com; https: // orcid. org / 0000 - 0002 - 8312 - 2825 danghoa.iebr@gmail.com text Zootaxa 2021 2021-09-21 5040 2 215 237 journal article 10.11646/zootaxa.5040.2.3 1175-5326 10117560 2951D97F-F2D9-4434-A9D1-BCC3A5FFA4A4 Colastomion neuterum Long , sp. n. Figs 37–55 Material examined. Holotype , ♀ ( IEBR ), “ Rog. 1073 ”, NE Vietnam : Tuyen Quang , Na Hang , Son Phu , forest, MT , 22°17’32’’N 105°28’19’’E , 570m , 15.vii.2018 , KD Long . Paratypes , 3 ♀ ( IEBR ), “Rog. 895 ”, NE Vietnam : Tuyen Quang , Na Hang , Thanh Tuong , forest, MT , 22°19’01’’N 105°24’02’’E , 162m , 15.xi.2016 , KD Long ; “Rog. 041 ”, N Vietnam : Ninh Binh , Cuc Phuong NP , forest, 20°20’N 105°35’E , 200m , sweep, 9.v.2002 , KD Long ; “Rog. 441 ”, NW Vietnam : Hoa Binh , Yen Thuy, Da Phuc , forest, MT , 20°28’12’’N 105°34’40’’E , 80m , 20–30.iv.2004 , KDLong; paratypes , 6 ♂ ( IEBR ), “Rog. 232 ”, “Rog. 267 ”, “Rog. 234 ”, “Rog. 273 ”, N Vietnam : Ninh Binh , Cuc Phuong NP , forest, MT , 20°23’N 105°34’E , 315m , 10–20.ix.2002 , KD Long ; “Rog. 244 ”, NW Vietnam : Hoa Binh , Yen Thuy, orchard, MT , 20°23’N 105°34’E , 105m , 20–30.x.2002 , KD Long ; “Rog. 268 ”, ibid., but 20–30.iii.2002 , KDLong . Morphology. Holotype , ♀ , body length 8.4 mm , fore wing length 6.8 mm , antenna 10.2 mm ( Fig. 37 ). Head. Antenna with 54 flagellomeres; middle flagellomeres 3.0 × longer than wide (9: 3); 3 rd antennomere 1.2 × 4 th (12: 10); 3 rd segment of maxillary palp 3.7 × longer than maximally wide (11: 3); 5 th segment 1.3 × length of 6 th (13: 10); width of face 1.3 × length of face and clypeus combined (22: 17); width of face: height of eye = 2.3: 2.9; malar space 0.3 × as long as basal width of mandible (5: 18); basal width of mandible rugose, 1.2 × as long as hypoclypeal depression (18: 15); distance between tentorial pits 4.0 × distance between pit and eye (12: 3); in dorsal view, height of eye 2.5 × as long as temple (20: 8); in lateral view, width of eye 2.0 × as long as temple (18: 9) ( Fig. 42 ); ocelli high, POL: OD: OOL = 3: 6: 4; distance between front and hind ocelli as long as OOL ( Fig. 39 ); occipital carina broadly obliterated mediodorsally; face rugo-punctate medially, transversely rugulose laterally ( Fig. 38 ); frons flat, with sparse convergent striae ( Fig. 39 ). Mesosoma. Length of mesosoma 1.45 × as long as high (77: 53); propleuron smooth; mesopleuron largely smooth; precoxal sulcus shallow, coriaceous; metapleuron rugo-punctate; mesoscutum largely smooth with sparse fine punctures; notauli deep and sparsely crenulate anteriorly, with a median depression posteriorly between notauli ( Fig. 40 ); scutellar sulcus 0.6 × as long as scutellum (7: 12) with one carina; scutellum smooth; propodeum with median depression, crenulate medially, sparsely punctate laterally ( Figs 43, 46 ). Fore wing. Pterostigma 5.4 × as long as wide (54: 10); vein M+CU1 weakly curved on distal half; vein 1-M moderately strongly curved posteriorly; vein r arising far before middle of pterostigma; vein cu-a postfurcal, reclivious ( Fig. 44 ); 2-CU1 6.8 × longer than 1-CU1; SR1: 3-SR: r = 48: 34: 11; vein 2-SR 6.7 × 2-SR+M (20: 3); 1-CU1: cu-a: 2-CU1: 3-CU1 = 5: 8: 34: 8; basal length of second submarginal cell 3.35 × as long as its apical width (47: 14). Hind wing . Vein M+CU 1.1 × length of 1-M (34: 31); M+CU: 1-M: 1r-m = 34: 31: 19; vein 2-SC+ R thickened, subquadrate ( Fig. 45 ); vein SR slightly curving basally and almost parallel to wing margin posteriorly. FIGURES 37–47 . Colastomion neuterum Long , sp. n. , female, holotype. 37 Habitus 38 Head (frontal view) 39 Head (dorsal view) 40 Mesonotum (dorsal view) 41 Hypopygium (lateral view) 42 Head (lateral view) 43 Propodeum 44 Fore wing 45 Hind wing 46 Propodeum 47 First-third metasomal tergites. FIGURES 48–55 . Colastomion neuterum Long , sp. n. , male, paratype. 48 Habitus 49 Head (dorsal view) 50 Head (lateral view) 51 Propodeum 52 Maxillary palp 53 Fore wing 54 Hind wing 55 First-third metasomal tergites. Legs. Hind coxa shiny smooth; femur: tibia: basitarsus: tarsus 1–5 = 62: 84: 48: 107; length of hind femur, tibia and basitarsus 6.9, 10.5 and 12.0 × as long as their width respectively; middle tibial spur curved and setose basally; apex of hind tibia with comb of specialized setae at inner side. Metasoma. First tergite 1.6 × as long as apical width (55: 34) ( Fig. 47 ); first tergite with basal short median carina becoming sinuate rugosity posteriorly, surface of first tergite rugulose contrast to 2 nd tergite with sparse striae ( Fig. 47 ); 2 nd metasomal tergite with indistinct midbasal triangular area, 0.9 × its apical width (40: 46); medial length of 2 nd tergite 1.1 × its basal width (40: 35), and 1.1 × than 3 rd (40: 35); 2 nd metasomal tergite 0.9 × wider than medially long (35: 40), sparsely longitudinally striate with approximately 8 striae lateral to midlongitudinal; 3 rd metasomal tergite 0.7 × its basal width (35: 48) ( Fig. 47 ); third-fourth tergites densely striate, except extremely apex punctate; fifth-sixth tergites sparsely finely punctate; hypopygium weakly convex, sparsely setose ( Fig. 41 ); subapical ventral margin of ovipositor constricted, with three ventral teeth before the ventral constriction ( Fig. 41 ). Coloration. Body yellow; stemmaticum black; frons, median and lateral lobes of mesoscutum yellowish brown; wings yellow; pterostigma yellowish brown medially, pale yellow basally and apically ( Fig. 44 ); membrane of fore wing smoky apically. Male . ( Paratype ) ( Fig. 48 ): Body length 6.3 mm , fore wing length 5.1 mm ; 3 rd segment of maxillary palp 1.85 × longer than maximally wide (13: 7); 5 th segment as long as 6 th segment (10: 10) ( Fig. 52 ); width of face: height of eye = 1.7: 2.6; fore wing vein 2-SR 5.0 × 2-SR+M (15: 3) ( Fig. 53 ); basal length of second submarginal cell 3.45 × as long as its apical width (38: 11) ( Fig. 53 ); vein 2-SC+ R of hind wing subquadrate ( Fig. 54 ). Etymology. From “neuter” (Latin for ‘neither one nor the other’), because this new species is close to Colastomion cephonodes , sp. n. , differences between these two new species are given in the key. Biology . Unknown. Distribution . N Vietnam ( Ninh Binh ); NE Vietnam ( Tuyen Quang ); NW Vietnam ( Hoa Binh ).