Streblocera (Eutanycerus) netrangana Mai & Long & Hiep & Hoa & Duong 2025, sp. nov.
Creators: name: Mai, Pham Quynh
name: Long, Khuat Dang
name: Hiep, Nguyen Duc
name: Hoa, Dang Thi
name: Duong, Tran Dinh
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Streblocera
Streblocera netrangana

description: Streblocera (Eutanycerus) netrangana Long, sp. nov.
Figures 5, 6, 21
Type material. Holotype, ♀, labelled “Euph. 350 ”, (IEBR), N Vietnam: Ninh Binh, Trang An, Hang Moi, forest, 20°15’14’’N 105°53’42’’E, 14 m, sweep (nets), 12.vi.2018, KD Long. Paratype, 1♀, labelled “Euph. 168 ”, (IEBR), NC Vietnam: Ha Tinh, Huong Son, forest, 18°22’N 106°13’E, 900 m, 20–28.iv.1998, Malaise, AMNH. K. Long
Diagnosis. Small wasp; scapus expanded apically, without tooth-shaped horn subbasally; sixth–seventh flagellomere with hook-like prominence; length of scapus 6.0 × its maximum width, and 1.5 × of head height (in dorsal view); first flagellomere 1.2 × as long as second flagellomere; malar space 0.8 × as long as basal width of mandible; mesosoma 1.5 × as long as its height; propodeum with transverse carinae medially, and sparse irregular rugosities latero-posteriorly, areola not defined; length of first metasomal tergite 1.9 × as long as its apical width; apical width 2.5 × as long as its minimum width.
Description. Holotype, ♀; body length 2.5 mm, fore wing length 2.2 mm, ovipositor 0.8 mm (Fig. 5).
Head. Antenna with 21 antennomeres; length of scapus 6.0 × its maximum width (Fig. 6H); scapus 1.5 × of head height; first flagellomere 1.4 × second flagellomere; second-seventh flagellomeres straight ventrally; sixth–seventh flagellomeres with hook-like protruding processes (Fig. 6J); length from eighth flagellomere to apex of antenna 1.3 × scapus; in dorsal view, occipital carina complete medio-dorsally (Fig. 6A), width of head 1.6 × its median length, and 1.5 × width of mesoscutum (without tegulae); temple roundly narrowed behind eye; length of eye 1.85 × as long as temple; ocelli small, POL: OD: OOL = 3: 2.5: 6 (Fig. 6A); eye 1.85 × as high as broad; in lateral view, transverse diameter of eye 3.25 length of temple; in frontal view, diameter of antennal socket 1.4 × between sockets; face width 0.7 × length of face and clypeus combined, and 1.2 × height of eye (Fig. 6B); clypeus margin straight; malar space 0.8 × as long as basal width of mandible, and 0.3 × as long as eye height; upper tooth rather long, 2.3 × lower one (Fig. 6D); distance between tentorial pits 3.25 × distance from pit to eye margin; face rugo-punctate (Fig 6B); clypeus coriaceous, with sparse fine punctures; frons flat, mostly smooth, sparse short striate rugosities near antennal; temple and vertex polished smooth, with sparse fine punctures (Fig. 6A).
Mesosoma. In lateral view, length of mesosoma 1.5 × as long as its height; notauli narrow and sparsely crenulated anteriorly, widened posteriorly fusing into largely rugose area divided by a carina (Fig. 6E); prescutellar sulcus wide, deep, 0.6 × as long as scutellum, with one median carina; median lobe of mesoscutum coriaceous anteriorly, rugo-punctate medio-posteriorly (Fig. 6E); lateral lobes of mesoscutum and scutellum smooth; pronotal side largely crenulated medially, smooth dorsally and ventrally (Fig. 6F); precoxal sulcus short, largely punctate; mesopleuron smooth; metapleuron largely transversely rugose; propodeum with a short basal carina, and transverse carinae medially, and sparse irregular rugosities latero-posteriorly, areola not defined (Fig. 6G).
Wings. Length of fore wing 2.75 × its width; length of pterostigma 3.4 × its width, 1.8 × vein 1-R1 (Fig. 6I); vein r arising just behind middle of pterostigma, 0.4 × as long as width of pterostigma, and 0.2 × vein 1-R1; vein 1-CU1 short and thick, vein 1-CU1: cu-a: 2-CU1 = 1.5: 3: 10 (0.15 × vein 2-CU1); hind wing: 1-M: 1r-m: 2- SC+R = 2: 5: 5.
Legs. Length of hind femur, tibia and basitarsus 5.0, 14.0 and 7.5 × as long as their maximum width, respectively; hind basitarsus 0.35 × hind tibia, and 0.65 × second–fifth tarsus combined; fourth hind tarsus 0.8 × as long as fifth tarsus (without pretarsus).
Metasoma. Length of first tergite 2.0 × its apical width, apical width of first tergite 3.0 × its minimum width; ovipositor 0.35 × length of fore wing, and 1.3 × length of first tergite; ovipositor curved upwards apically (Fig. 5); first metasomal tergite smooth basally, striate medially and apically (Fig. 6C); remaining tergites highly smooth.
Colour. Head and mesosoma yellow; eyes silver-grey; legs and metasoma yellow, except first metasomal tergite medially, apex of metasoma and ovipositor sheath brownish yellow; wing veins yellow; wing membrane hyaline.
Male. Unknown.
Host: Unknown.
Etymology. “ ne ” Latin for “not” and “trangana ” in reference to the type of species having the same locality but different from S. (E.) trangana Long & Pham, 2020.
Distribution. N Vietnam: Ninh Binh province (Trang An); NC Vietnam: Ha Tinh (Huong Son) (Fig. 21).
description: Published as part of Mai, Pham Quynh, Long, Khuat Dang, Hiep, Nguyen Duc, Hoa, Dang Thi & Duong, Tran Dinh, 2025, Review of the genus Streblocera Westwood, 1883 (Hymenoptera, Braconidae, Euphorinae) in Vietnam, with descriptions of nine new species, pp. 59-92 in Zootaxa 5627 (1) on pages 68-71, DOI: 10.11646/zootaxa.5627.1.2, http://zenodo.org/record/15324979