Addition to the review of the genus Wroughtonia Cameron, 1899 (Hymenoptera, Braconidae, Helconinae) from Vietnam: Description of two new species Author Oanh, Nguyen Thi 0000-0002-3265-0580 Dong Thap University, Cao Lanh City, Dong Thap, Vietnam ntoanh@dthu.edu.vn Author Long, Khuat Dang 0000-0002-9237-7344 Institute of Ecology & Biological Resources (IEBR), Vietnam Academy of Science & Technology (VAST), 18 Hoang Quoc Viet Road, Cau Giay, Ha Noi, Vietnam khuatdanglong@gmail.com Author Pham, Nhi Thi Institute of Ecology & Biological Resources (IEBR), Vietnam Academy of Science & Technology (VAST), 18 Hoang Quoc Viet Road, Cau Giay, Ha Noi, Vietnam & Graduate Iniversity of Science & Technology, Vietnam Academy of Science & Technology (VAST), 18 Hoang Quoc Viet Road, Cau Giay, Ha Noi, Vietnam ptnhi2@yahoo.com Author Mai, Pham Quynh 0000-0002-9479-9604 Institute of Ecology & Biological Resources (IEBR), Vietnam Academy of Science & Technology (VAST), 18 Hoang Quoc Viet Road, Cau Giay, Ha Noi, Vietnam pqmai70@gmail.com Author Nghiep, Hoang Thi 0000-0003-3000-8049 Dong Thap University, Cao Lanh City, Dong Thap, Vietnam htnghiep@dthu.edu.vn text Zootaxa 2024 2024-04-30 5446 2 221 235 http://dx.doi.org/10.11646/zootaxa.5446.2.4 journal article 10.11646/zootaxa.5446.2.4 27964af5-1e54-45b8-bd4f-c3b092808d4f 1175-5326 11101652 582B049F-FD5A-483A-A212-D63869125E32 Wroughtonia phiaoaca Long , sp. nov. Figures 1 , 2 , 5 Type material . Holotype , ♀ , “Hel. 109 ” ( IEBR ), NE Vietnam : Cao Bang , Nguyen Binh, Phia Oac-Phia Den NP , forest periphery, 22°34’16’’N 105°52’30’’E , 1040m , light trap , 3.vi.2023 , KDLong. Diagnostic characters .Antenna with 31 flagellomeres, 8 th –17 th flagellomeres creamy white; frontal protuberance lamelliform, with distinctly ledge halfway and acute dorsally ( Figs 2C, D ); in dorsal view width of head 1.6 × its median length; height of eye 2.0 × temple ( Fig. 2A ); in frontal view, width of face 1.7 × length of face and clypeus combined; malar space 0.8 × height of eye; in lateral view height of eye 1.5 × as long as transverse width; transverse width of eye 1.7 × temple ( Fig. 2D ). Mesosoma 2.3 × longer than high; in lateral view, mesoscutum perpendicularly raised above pronotum; notauli wide, sparsely crenulate anteriorly, fused posteriorly with one median rugosity in areolate-rugose area of mesoscutum ( Fig. 2E ); scutellar sulcus 0.8 × scutellum; propodeum with medio-basal carina and trace of round areola, largely rugose. Length of fore wing 3.3 × its maximum width; vein 3-SR 1.1 × as long as r; vein 2-M 2.2 × 3-SR; hind wing vein 1-M 0.7 × 1r-m; vein 2-SC+R vertical. Fore tarsus 1.3 × as long as fore tibia; hind femur comparatively robust, with ventral serrations and without stout tooth-shaped protuberance; length of hind femur (without tooth or serrations) 3.05 × as long as its maximum width; hind coxa mostly smooth laterally, with sparse fine punctures and rather dense setae; hind femur largely rugose-punctate laterally. First metasomal tergite 1.15 × longer than its apical width; dorsal carinae in basal 0.6 of tergite; first tergite areolate-rugulose medially ( Fig. 2H ); median length of second tergite 0.6 × its apical width; second tergite 0.8 × as long as third tergite; second tergite foveate-reticulate medially; the remaining tergites shiny, smooth. Notes . W. phiaoaca sp. nov. is similar to W. bifurcata Yan & van Achterberg , but can be distinguished by the following characters: 1) vein 1-M of hind wing 0.7 × 1r-m ( vs 1.1 × in W. bifurcata ); 2) hind femur rugo-punctate laterally ( vs sparsely punctate in W. bifurcata ), and 3) second metasomal tergite foveate-reticulate medially ( vs rugo-punctate medially). The new species is also similar to W. coffeana Long , but differs from the latter by the following characters: 1) frontal protuberance lamelliform, bifurcate, with distinctly ledge halfway and acute dorso-posteriorly ( vs frontal protuberance lamelliform, with ledge halfway and blunt dorso-posteriorly); 2) first metasomal tergite subequal to its apical width ( vs 1.1 × in W. coffeana ); 3) length of hind femur 3.05 × as long as its maximum width ( vs 3.7 × in W. coffeana ); 4) outer side of hind coxa punctate, and of hind femur rugo-punctate ( vs hind coxa nearly smooth and hind femur sparsely punctate). Wroughtonia phiaoaca sp. nov. runs out to couplet 4 in the key by Long et al. (2020) as follows: 4a. Frontal protuberance lamelliform, bifurcate and acute dorso-posteriorly (4a); Hind femur slenderer, weakly concave apicoventrally, its length 3.7 × as long as maximum width, outer side of hind femur sparsely punctate, sparsely setose ventrally (4aa); second submarginal cell of fore wing narrowed apically (see Fig. 35 in Long et al. 2020 ); vein 2-M of fore wing 2.6 × 3-SR.................................................................................. W. coffeana Long, 2020 PLATE 1. Wroughtonia coffeana Long, 2020 , female, hototype 4a Head, dorsal 4aa Hind femur, outer side. 4a’. Frontal protuberance lamelliform, bifurcate and acute dorso-posteriorly (4b); hind femur robust, distinctly concave apicoventrally, its length 3.05 × as long as maximum width, outer side of hind femur rugo-punctate, densely setose ventrally (4bb); vein r of fore wing exiting from before middle of pterostigma; second submarginal cell of fore wing broad ( Fig. 2I ); vein 2-M 2.2 × 3-SR..................................................................... W. phiaoaca Long , sp. nov. PLATE 2. Wroughtonia phiaoaca Long , sp. nov. , female, hototype 4b Head, dorsal 4bb Hind femur, outer side. FIGURE 1. Habitus of Wroughtonia phiaoaca Long , sp. nov. , holotype, female, lateral. Description. Holotype , ♀ , body length 6.8 mm , fore wing length 5.4 mm , ovipositor sheath 5.0 mm ( Fig. 1 ). Head. Antenna with 31 flagellomeres; first flagellomere 1.1× longer than second flagellomere; in frontal view, height of eye 2.2 × its transverse width; width of face 1.7 × length of face and clypeus combined; malar space 0.8 × as long as mandible width and 0.3 × height of eye ( Fig. 2B ); maxillary palp 1.25 × as long as head; frontal protuberance lamelliform, bifurcate and acute dorsally; in dorsal view width of head 1.6 × its median length; height of eye 2.0 × temple; ocelli small, OOL: OD: POL = 10: 4: 5; distance between front and hind ocelli 0.3 × OOL ( Fig. 2A ); in lateral view height of eye 1.5 × its transverse width; transverse width of eye 1.7 × temple ( Fig. 2D ); face coarsely rugose laterally, transversely rugose medially; clypeus rugose; frons, vertex and temple shiny, smooth. Mesosoma . Mesosoma 2.3 × longer than high ( Fig. 2F ); pronotal side coarsely carinate-rugose medially; largely rugose ventrally and dorsally; mesopleuron smooth medially, largely rugo-punctate ventrally; metapleuron areolate-rugulose; median lobe of mesoscutum coriaceous anterio-medially, largely rugose laterally and posteriorly; lateral lobes of mesoscutum largely smooth laterally; notauli wide, sparsely crenulate anteriorly, fused with one rugosity posteriorly in areolate-rugose area of mesoscutum ( Fig. 2E ); scutellar sulcus smooth, with 3 carinae, 0.8 × as long as scutellum; scutellum sparsely punctate; propodeum with medio-basal carina, largely areolate-rugose laterally, areola with three transverse carinae ( Fig. 2K ). Wings. Length of fore wing 3.3 × its maximum width; pterostigma 5.0 × as long as wide; vein 3-SR 1.1 × vein r; r: 2-SR: 3-SR: SR1: r-m = 11: 16: 12: 66: 9; 1-CU1: cu-a: 2-CU1 = 4: 12: 21; second submarginal cell trapezium-shaped, vein 2-M 2.2 × 3-SR ( Fig. 2I ); vein 1-M of hind wing 0.7 × as long as vein 1r-m; vein 2-SC+R longitudinal (horizontal) ( Fig. 2J ); hind wing with 3 hamuli. Legs. Fore tarsus 1.3 × longer than fore tibia; hind femur comparatively robust, with ventral serrations and without stout tooth-shaped protuberance, distinctly concave apico-ventraly, densely setose ventrally ( Fig. 2G ); length of hind femur (without tooth or serrations), tibia and basitarsus 3.05, 9.6 and 5.8 × as long as their maximum width, respectively; hind coxa mostly smooth laterally, with sparse fine punctures and rather dense setae; hind femur rugo-punctate laterally; hind basitarsus 0.3 × as long as hind tibia, and 0.6 × as long as second–fifth hind tarsus; fourth hind tarsus 0.5 × telotarsus. FIGURE 2. Wroughtonia phiaoaca Long , sp. nov . , holotype, female, lateral A Head, dorsal B Head, frontal C Frons, lateral, arrow indicates acute dorso-posterior ledge D Head, lateral E Mesonotum, dorsal F Mesopleuron G Hind femur H Metasomal tergites 1–3, arrows indicate dorsal carinae I Fore wing J Hind wing K Propodeum. Metasoma. Metasoma 0.7 × as long as head and mesosoma combined; first tergite 1.15 × apical width; dorsal carinae in basal 0.6 × of tergite, fusing into medio-apical areolate-rugulose area of the tergite ( Fig. 2H ); first tergite areolate-rugulose, except basal area smooth ( Fig. 2H ); median length of second tergite 0.4 × its apical width, and 0.8 × as long as third tergite; second suture wide; second tergite foveate-reticulate medially ( Fig. 2H ); third–sixth tergites smooth; ovipositor sheath 0.9 × as long as fore wing. Colour. Head black; antenna dark brown, with 8 th –17 th flagellomeres cream white; palpi pale yellow; mesosoma black; fore and middle legs yellow; hind coxa, trochanter and trochantellus yellow; basal one third of hind femur yellow, and apical two third blackish-brown; basal one third of hind tibia whitish-yellow, and apical two third blackish-brown; hind tarsus whitish-yellow, except telotarsus brown apically; pterostigma and wing veins brown; wing membrane hyaline; metasoma brownish-yellow; ovipositor sheath brown; ovipositor brown. Male : Unknown. Etymology . The new species is named after Phia Oac mountain of Phia Oac-Phia Den National Park, where the new species was discovered. Host . Unknown. Distribution. Northeastern Vietnam ( Cao Bang province ) ( Fig. 5 ).