Notes on the genus Astinus Stål (Heteroptera: Reduviidae: Harpactorinae) from Vietnam, with the description of the female of Astinus intermedius Miller Author Truong, Xuan Lam Department of Entomology, China Agricultural University, Yuanmingyuan West Road, Beijing 100094, China. E-mail: caiwz @ cau. edu. cn & Institute of Ecology & Biological Resources, Vietnamese Academy of Science & Technology, No. 18 Hoang Quoc Viet. Cau Giay, Ha Noi, Vietnam. E-mail: txlam @ iebr. yast. ac. vn Author Zhao, Ping Department of Entomology, China Agricultural University, Yuanmingyuan West Road, Beijing 100094, China. E-mail: caiwz @ cau. edu. cn Author Cai, Wanzhi Department of Entomology, China Agricultural University, Yuanmingyuan West Road, Beijing 100094, China. E-mail: caiwz @ cau. edu. cn text Zootaxa 2006 2006-04-13 1172 1 31 41 https://biotaxa.org/Zootaxa/article/view/zootaxa.1172.1.3 journal article 10.11646/zootaxa.1172.1.3 1175­5334 5058761 C36A9B52-6512-4F3F-B07A-42A3D45B5F1D Astinus siamensis Distant ( Figs. 7–22 ) Astinus siamensis Distant 1903: 248 ; Hsiao 1979: 253 ; Hsiao & Ren 1981: 496 ; Maldonado­ Capriles 1990: 166; Putshkov & Putshkov 1996: 228 . Redescription Coloration: Body mostly orange to yellowish brown. Clavus, membrane light yellow and semitransparent; eyes purplish brown with irregular pale markings; ocelli light yellow; abdominal beneath with yellow to paler and black longitudinal strips in middle. Body clothed with white wax patches. Structure: Body oblong. Body clothed short setae and vertical long setae; first antennal segment and basal half of second segment with sparse oblique setae, apical half of second and two distal segments densely covered with oblique short setae; under surface of fore leg densely covered with short setae. Head elongate, postocular portion about 1.5 times of anteocular portion; processes behind antennae short, especially in female; first antennal segment longer than third, second segment slightly longer than fourth; interocellar space much longer than distance between ocellus and eye on each side; first rostral segment extending beyond level of ocelli, thickest and distinctly longer than second and third segments combined. Collar process developed, not bent; pronotum wider than long; anterior pronotal lobe bulging and smooth, tuberculate process developed ( Figs. 9, 10 ); two processes on disk of posterior pronotal lobe ridge­shaped and slightly produced laterally ( Figs. 7–11 ); lateral angle of pronotum sharp, lateroposterior margin convex; posterior angle prominent; scutellum about 2 times as wide as long; hemelytra extending slightly beyond abdominal tip. Apical segments of female as shown in Figs. 12, 13 . Apical 2/5 of pygophore nearly triangular in ventral view ( Figs. 14, 17 ), median process small with apex pointed downwards ( Figs. 16, 17 ); paramere distinctly curved ( Figs. 16–18 ). Basal plate of phallus thicker than plate bridge, pedicel short ( Fig. 20 ); apical part of dorsal phallothecal sclerite slightly warped upward ( Fig. 19 ); struts fused at basal 3/5 and separated apically ( Fig. 21 ). Measurements [ ♂ (n=4) / ♀ (n=2)]: Body length 19.93–19.93/20.29–21.50, abdomen width 4.67–5.47/5.18–5.21. Head length 3.20–3.60/4.28–4.72; anteocular portion length 1.07–1.10/1.32–1.37, postocular portion length 1.48–1.86/1.86–1.97; synthlipsis length 0.69–0.76/0.76–0.81; interocellar space 0.55–0.41/0.45–0.52; length of antennal segments I–IV= 8.56–9.00/8.78–7.90, 3.46–3.51/3.51, 8.34–9.21/8.23, 2.10–2.74 /3.40; length of rostral segments I–III = 2.31–2.24/2.42–2.52, 1.31–1.38/1.38–1.40, 0.66–0.72/0.72–0.76. Anterior pronotal lobe length 1.20–1.32/1.54–1.60, posterior lobe length 2.40–2.74/ 2.74–3.20; thorax width 4.67–5.65/5.81–6.13; scutellum length 0.52–0.62/0.69–0.7; hemelytron length 11.33–12.93/13.33–14.26. Material examined: 1♀ , Vietnam , Lao Cai Province , Sapa , 1200 m , 7.X.1995 , S. Nomura leg ( IEBR ) . 1♀ , Vietnam , Mt. Tan Vien , 500 m , 16.X.1995 , S. Nomura leg ( IE BR ) . 2♂ , Vietnam , Phu Tho Province , Xuan Son National Park , 22.X.2004 , Xuan Lam Truong leg ( IEBR ) . 2♂ , Vietnam , Tay Ninh province , Lo Go National Park , 7.X.2003 , Xuan Lam Truong leg ( CAU ) . Distribution: China , Vietnam .