Notes on the genus Streblocera Westwood, 1883 (Hymenoptera: Braconidae: Euphorinae) from Vietnam, with description of four new species Author Long, Khuat Dang Author Nhi, Pham Thi text Zootaxa 2020 2020-04-28 4767 3 402 414 journal article 22511 10.11646/zootaxa.4767.3.2 b88513a0-1670-4cd5-8f94-f890d70d16ef 1175-5334 3772959 urn:lsid:zoobank.org:pub:91221D05-77DA-4883-A301-96607B86302C Key to Streblocera species from Vietnam 1. Scapus robust, length of scapus 4.0–5.0 × its maximum width (without horn) ( Figs 23 , 30 ); propodeum distinctly convex ante- riorly higher upper level of scutellum ( Figs 23 , 28 ).............. Streblocera ( Eutanycerus ) trangana Long & Pham , sp. n. - Scapus slender, length of scapus 6.5–9.5 × its maximum width (without horn) ( Figs 8 , 19 , 41 ); propodeum at the upper level of scutellum ( Figs 6 , 39 ).................................................................................. 2 2. Fifth flagellomere geniculate (Fig. 82 in Belokobylskij, 2000b ); second to fifth flagellomeres with pointed tubercles baso-ventrally (Fig. 82 in Belokobylskij, 2000b ), 19 antennomeres............................ S. (E.) thayi Belokobylskij, 2000 - Seventh flagellomeres geniculate ( Figs 7 , 18 , 40 ; Fig. 76 in Belokobylskij, 2000b ); second to sixth flagellomeres serrate ( Figs 7 , 40 ), if not then fused immobile and slightly compressed with deep ventral excisions between flagellomeres (Fig. 76 in Belokobylskij, 2000b ); antenna with 19–25 antennomeres......................................................... 3 3. First-fifth flagellomeres not serrate; scapus shorter, less than 6.5 × its maximum width (without horn) ( Fig. 2B in Watanabe, 1942 . China , Japan , Russia ....................................................... S. ( E. ) okadai Watanabe, 1942 - At least first to fifth flagellomeres serrate ( Figs 7 , 18 , 40 ) or fused immobile and slightly compressed with deep ventral excisions between flagellomeres (Fig. 76 in Belokobylskij, 2000b ); scapus long, 7.5–9.4 × its maximum width (without horn) ( Figs 8 , 19 , 41 )............................................................................................ 4 4. Scapus long, length of scapus 9.3–9.4 × as long as its maximum width (without horn) ( Figs 19 , 41 ); antenna with 23–25 antennomeres ( tuyenquangensis & quangbinhensis ).............................................................. 5 - Scapus shorter, length of scapus 7.5–7.8 × as long as its maximum width (without horn) ( Fig. 8 ; Fig. 75 in Belokobylskij, 2000b ); antenna with 19–21 antennomeres ( intermedia & pila )................................................. 6 5. First metasomal tergite rather long, median length 2.3 × as long as its apical width ( Fig. 42 ); apical width 3.75 × minimum width; vein cu-a of fore wing distinctly postfurcal ( Fig. 44 )........................ S. ( E. ) tuyenquangensis Long , sp. n . - First metasomal tergite shorter, median length 1.6 × as long as its apical width ( Fig. 20 ); apical width 3.3 × minimum width; vein cu-a of fore wing slightly postfurcal ( Fig. 22 )................................ S. ( E. ) quangbinhensis Long , sp. n. 6. First metasomal tergite slender, length of first metasomal tergite 2.45 × apical width; apical width of first metasomal tergite 2.75 × its minimum width ( Fig. 10 ); antenna with 21 antennomeres........................... S. ( E. ) intermedia Long , sp. n . - First metasomal tergite shorter, length of first metasomal tergite 1.6 × apical width; apical width of first metasomal tergite 3.0 × its minimum width (Fig. 74 in Belokobylskij, 2000b ); antenna with 19–20 antennomeres... S. ( E. ) pila Belokobylskij, 2000