New species of the Rhaconotusjacobsoni group (Hymenoptera, Braconidae, Doryctinae) from Vietnam Author Oanh, Nguyen Thi Author Long, Khuat Dang text ZooKeys 2019 853 37 55 http://dx.doi.org/10.3897/zookeys.853.33938 journal article http://dx.doi.org/10.3897/zookeys.853.33938 1313-2970-853-37 334DE9B4FDFE40508B7A04CD96A92155 334DE9B4FDFE40508B7A04CD96A92155 Rhaconotus directus Long sp. nov. Figs 1, 2-12 Material. Holotype, female, "Doryc.035" , (IEBR), NW Vietnam: Hoa Binh, Mai Chau, Pa Co, forest, 1100 m, 26.iv.2002, KD Long. Diagnosis. Occipital carina complete medio-dorsally, obliterated below and not fused with hypostomal carina (Fig. 3); frons almost flat, finely granulate; vertex and temple finely granulate; distance from pronotal carina to mesonotum equal to distance from carina to anterior margin of pronotum; in lateral view, metanotum with long pointed tooth (Fig. 5a); precoxal sulcus long, narrow, crenulate (Fig. 5); mesopleuron and metapleuron finely granulate; notauli shallow, sparsely crenulate anteriorly, widened posteriorly, with median crenulate depression (Fig. 6); propodeum with median carina in basal 0.3; pterostigma 4.5 x as long as wide; fore wing vein 3-SR 5.0 x vein r; vein 1-CU1 very short, nearly quadrate; vein cu-a almost interstitial (Fig. 10); second submarginal cell parallel-sided, basal length 2.9 x its maximum width and 0.9 x subdiscal cell (Fig. 10); vein 1-M of hind wing 6.3 x vein 1r-m (Fig. 11); inner side of fore tibia with four spines; hind coxa finely and densely granulate; hind tibia 7.7 x its maximum width; first metasomal tergite gradually widened from base to apex, 2.4 x its apical width (Fig. 8); second tergite with lenticular apical area weakly delineated with shallow furrows (Fig. 8); second-third tergites coarsely longitudinally striate; fourth-fifth tergites longitudinally striate basally, finely striate apically; sixth tergite with semi-circular striae in its apical half. Description. Female, body length 5.4 mm; fore wing length 4.5 mm; ovipositor sheath 3.4 mm (Fig. 1). Head. Antenna incomplete, with 45 segments remaining; scapus length dorsally 1.8 x as long as its maximum width; third antennal segments 1.1 x as long fourth segment; in dorsal view, temple roundly narrowed behind eye; head width 1.3 x its median length; median length of head 3.0 x as long as temple; height of eye 1.9 x temple (Fig. 2); in lateral view, transverse diameter of eye 1.4 x length of temple (13: 9); eye length 1.4 x its width (18: 13) (Fig. 3); ocelli small, basal side of ocellar triangle 1.5 x lateral sides; POL 1.5 x OD and 0.5 x OOL (Fig. 2); in frontal view, eye 2.1 x as high as broad; malar space height 0.5 x height of eye, and 1.3 x basal width of mandible; face width 1.3 x height of eye, and 1.8 x height of face and clypeus combined (Fig. 4); hypoclypeal depression width 1.3 x as long distance from edge of depression to eye, 4.0 x as wide as face, and 1.6 x as wide as basal width of mandible; distance between tentorial pits 1.5 x as long as long distance from pit to eye; occipital carina complete medio-dorsally, obliterated below and not fused with hypostomal carina above base of mandible (Fig. 3); length of maxillary palp 1.45 x height of head (without mandible); frons almost flat, finely granulate; vertex and temple finely granulate; face setose, granulate (Fig. 4). Figure 1. Rhaconotus directus Long, sp. nov., female, holotype (habitus, lateral view). Figures 2-12. Rhaconotus directus Long, sp. nov., female, holotype 2 head, dorsal view 3 head, lateral view 4 head, frontal view 5 mesopleuron 6 mesonotum, dorsal view 7 hind coxa and femur 8 metasomal tergites 1-3, dorsal view 9 metasomal tergites 5-6 10 fore wing 11 hind wing 12 propodeum. Mesosoma. Distance from pronotal carina to mesonotum equal to distance from carina to anterior margin of pronotum; length of mesosoma 2.9 x its height (Fig. 5); in lateral view, metanotum with long pointed tooth (Fig. 5a); pronotal trough crenulate anteriorly, with transverse striae posteriorly; precoxal sulcus long, narrow, crenulate (Fig. 5); mesopleuron and metapleuron finely granulate; mesoscutum finely granulate; notauli shallow, sparsely crenulate anteriorly, widened posteriorly with crenulate depression (Fig. 6); scutellar depression 0.4 x as long as scutellum; scutellum finely granulate (Fig. 6); propodeum with lateral carinae, median carina in basal 0.3 of propodeum (Fig. 12); propodeum almost finely granulate; apex of propodeum with 2-3 transverse rugosities (Fig. 12). Wings. Fore wing 4.35 x as long as its maximum width; pterostigma 4.5 x as long as wide; vein r arising from middle of pterostigma; vein 1-R1 1.2 x as long as pterostigma; vein 3-SR 5.0 x vein r, and 0.5 x vein SR1, and 1.4 x vein 2-SR; vein m-cu postfurcal; second submarginal cell of fore wing parallel-sided, basal length 2.9 x as long as its maximum width (Fig. 10), and 0.9 x as long as subdiscal cell; subdiscal cell roundly closed on level of vein m-cu; vein 1-CU1 very short, nearly quadrate; vein cu-a almost interstitial (Fig. 10); hind wing 5.0 x as long as its maximum width; vein M+CU 0.3 x vein 1-M; vein 1-M 6.3 x vein 1r-m (Fig. 11). Legs. Fore tarsus 1.2 x as long as fore tibia; inner side of fore tibia with four spines; hind coxa with baso-ventral tooth (Fig. 7), finely and densely granulate; hind femur, tibia and basitarsus 3.3, 7.7, and 6.7 x their maximum width, respectively; dorsal side of hind femur with short sparse semi-erected setae (Fig. 7), length of seta about 0.5 x as long as maximum width of femur; outer side of hind tibia with sparse semi-erected setae, length of seta as long as maximum width of hind tibia; inner hind tibial spur 0.2 x as long as hind basitarsus; hind tarsus 0.9 x as long as hind tibia; basitarsus 0.7 x as long as second-fifth tarsal segments combined (20:33); second tarsal segment 0.5 x as long as basitarsus (10: 20), and 2.0 x as long as fifth tarsal segment (without pretarsus); fourth tarsal segment 0.6 x fifth tarsal segment. Metasoma. Metasoma 1.4 x as long as head and mesosoma combined; first tergite gradually widened from base to apex; maximum width of first tergite 1.4 x its minimum width (Fig. 8); length of first metasomal tergite 2.4 x apical width, and 1.45 x length of propodeum; second suture indistinct because of straight longitudinal striae; second tergite with lenticular apical area weakly delineated with wide shallow furrows (Fig. 8); second tergite with apical area 2.45 x as long as length of third tergite (Fig. 8); first metasomal tergite with dorsal carinae, granulate basally, longitudinally striate apically (Fig. 8); second-third tergites coarsely longitudinally striate; fourth-fifth tergites largely longitudinally striate basally, finely striate apically; sixth tergite with semi-circular striae in its apical half (Fig. 9). Colour. Body black; head dark brown; antenna brownish yellow, palpi brown, except apical segment of maxillary palp pale yellow; fore and middle legs brownish yellow, except tarsus yellow, hind coxa dark brown; hind femur and tibia brown; hind tarsus yellow; tegula brown; wing veins yellowish brown; pterostigma brown, cream white basally (Fig. 10). Male. Unknown. Biology. Unknown. Etymology. From directus (Latin for "set straight", "arrange in a straight line"), because of the interstitial vein cu-a of fore wing.