First record of the genus Testudobracon Quicke, 1986 (Hymenoptera: Braconidae: Braconinae) in Vietnam, with description of four new species 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 & Graduate University of Science & Technology, Vietnam Academy of Science & Technology (VAST), 18 Hoang Quoc Viet Road, Cau Giay, Ha Noi, Vietnam & pqmai 70 @ gmail. com; https: // orcid. org / 0000 - 0002 - 9479 - 9604 pqmai70@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 Hiep, Nguyen Duc 0000-0003-4328-9652 Institute of Ecology & Biological Resources (IEBR), Vietnam Academy of Science & Technology (VAST), 18 Hoang Quoc Viet Road, Cau Giay, Ha Noi, Vietnam & hiep 79 hn @ gmail. com; https: // orcid. org / 0000 - 0003 - 4328 - 9652 hiep79hn@gmail.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 Author Duong, Tran Dinh 0000-0002-6598-7964 Institute of Ecology & Biological Resources (IEBR), Vietnam Academy of Science & Technology (VAST), 18 Hoang Quoc Viet Road, Cau Giay, Ha Noi, Vietnam & duongflo @ yahoo. com; https: // orcid. org / 0000 - 0002 - 6598 - 7964 duongflo@yahoo.com text Zootaxa 2023 2023-02-22 5244 5 485 500 http://zoobank.org/46962264-5ded-44b6-a42a-66fa97eb5f36 journal article 10.11646/zootaxa.5244.5.5 1175-5326 7663880 46962264-5DED-44B6-A42A-66FA97EB5F36 Testudobracon descensus Long , sp. nov. Figures 3–4 Material examined . Holotype , ♀ , “Bracn. 1561 ” ( IEBR ), NW Vietnam : Son La , Chieng Sinh , Quyet Tam , orchard, MT , 21°18’06’’N 103°55’36’’E , 663 m , 10.v.2017 , KD Long. Description . Holotype , female, length 3.2 mm ; antenna 2.6 mm ; fore wing 2.9 mm ; ovipositor sheath 1.4 mm ( Fig. 3 ). FIGURE 3. Habitus of Testudobracon descensus Long , sp. nov. , holotype, female (lateral) FIGURES 4a–k. Testudobracon descensus Long , sp. nov. , holotype, female, a Head, dorsal b Head, frontal c First-third metasomal tergites, dorsal d Mesonotum e Head, lateral f Mesopleuron g Metasoma, lateral h Fourth-sixth metasomal tergites, dorsal i Apex of ovipositor, lateral k Fore wing Head . Antenna with 23 flagellomeres; length of first flagellomere subequal to second flagellomere; first, second and penultimate flagellomeres 2.0, 2.0 and 1.2 × as long as wide; head 1.3 and 1.8 × as wide as long medially in frontal and dorsal view, respectively; frons and vertex anteriorly rugo-granulate ( Figs 4a, 4b ); occiput largely rogose; temple laterally coriaceous; malar space rugose; OOL: OD: POL= 7: 3: 3 ( Fig. 4a );; oculo-antennal groove indistinct; length of eye 3.25 × as long as temple in dorsal view; lateral temples smooth and shiny; height of eye: width of face: width of head = 16: 16: 33; face rugose ( Fig. 4b ); height of clypeus: inter-tentorial distance: tentorio-ocular distance = 2.5: 7.0: 5.0; clypeus with distinct postero-dorsal carina ( Fig. 4b ); length of malar space 1.75 × basal width of mandible. Mesosoma . Length of mesosoma 1.2 × its height; mesoscutum with sparse and short setosetae; middle lobe more or less with medial longitudinal ridge ( Fig. 4d ); notauli complete, punctate, anteriorly with depressed area, narrowed medially and widened posteriorly, meeting scutelar sulcus; scutellar sulcus deep, with 7 carinae ( Fig. 4d ); scutellum convex, smooth; mesopleuron with a short and deep narrow pit medially ( Fig. 4f ); precoxal sulcus indistinct; mesopleuron coriaceous ventally and medially, transversely rugose dorsally; metapleuron rugo-punctate; propodeum with a complete mid longitudinal carina, smooth, setose latero-posteriorly. Wings . Length of pterostigma 2.7 × its maximum width; fore wing vein 1-SR 0.4 × as long as 1-M; ratio of length of fore wing veins r: 3-SR: SR1= 5: 11: 36, and 2-SR: 3-SR: r-m = 10: 11: 6; second submarginal cell slightly narrowed distally ( Fig. 4k ). Hind wing vein C+SC+R with single straight hamulus and vein R1 with 3 curved hamuli apically; ratio of length of hind wing veins 1r-m: SC+R1 = 6: 10. Legs . Length of fore femur: tibia: tarsus = 19: 21: 24; hind coxa smooth, setose; length of hind femur: tibia: basitarsus = 28: 33: 11. Metasoma . First metasomal tergite rugose, 0.7 × as long as wide apically apically, deeply impressed mediobasally and carinate medially; second metasomal tergite basally 1.8 × wider than long, with sublateral grooves, rugose, setose ( Fig. 4d ); second metasomal tergite 1.1 × as long as third tergite medially; second metasomal tergite areolate-rugulose medially ( Fig. 4c ); third tergite confused rugulose; fourth-sixth metasomal tergites finely irregularly rugose medially, rugose laterally ( Fig. 4g ); sixth metasomal tergite with rounded postero-lateral lobes; medial emargination (incision) deep ( Fig. 4h ), 0.6 × as long as tergite medially, and 0.7 × as long as wide; ovipositor abruptly bent downward ( Fig. 4i ), 1.0 × metasoma in lateral view, and 0.6 × as long as fore wing ( Fig. 3 ). Colour . Antenna brown; stemmaticum dark brown; head, pronotum yellow; mesoscutum and mesopleuron ventrally reddish yellow; scutellum, mesopleuron dorsally, mesosternum and propodeum brown to dark brown ( Fig. 4f ); fore and middle legs yellow; hind coxa, femur and tibia dark brown, except hind tibia basally, hind trochanters + trochantellus and hind tarsus pale yellow; wing veins yellowish brown; metasomal tergites 1–3 yellow, except 1st tergite apically, 2nd–3rd tergites medially dark brown; 4th–6th tergites pale yellow; postero-lateral lobes of 3rd–5th tergites and 3rd-4th metasomal sutures yellowish brown ( Fig. 4h ); ovipositor sheath brown; ovipositor yellow. Male . Unknown. Distribution . NW Vietnam ( Hoa Binh , Son La ). Biology . Unknown. Etymology . From Latin “descensus” meaning “downward course”, because ovipositor abruptly bent downward subapically. Notes . Testudobracon descensus sp. nov. is close to T. niger Quicke , from Indonesia , but differs from the latter by the following characters: 1) Vein 3-SR of fore wing 1.65 × vein r (1.8 × in T . niger ); 2) Second sub-marginal cell of fore wing almost not narrowed apically; and 3) Propodeum and medio-dorsal area of 3rd tergite blackish brown to black; third-fourth metasomal suture brown.