Aradidae from Vietnam II. Longitergus, a new genus and two new species of micropterous Mezirinae (Hemiptera: Heteroptera: Aradidae) Author Pham, Minhlan Author Bai, Xiaoshuan Author Heiss, Ernst Author Cai, Wanzhi text Zootaxa 2013 3709 6 556 564 journal article 10.11646/zootaxa.3709.6.5 6ad73d21-d406-4def-9f4a-83a46d298a9f 1175-5326 223614 2BFE270E-2BD6-4C13-9396-975414AF1932 Longitergus productus n.sp. ( Figs. 1–17 ) Material examined: Holotype male labelled: Vietnam , Haiphong / Catba, 200m / N 20°42’ , E 106°53’ / 5 X 2011 , Bai & Pham leg. // deposited in CAU; paratypes : 4 males , 6 females collected with holotype (CAU, CEHI); these types are designated and labelled accordingly. FIGURES 12 – 17. Longitergus productus n.sp. 12,15—dorsal view; 13,16—lateral view; 14,17—ventral view: 12–14— holotype male; 15–17—paratype female. Scale bar = 1mm. FIGURES 18 – 23. Longitergus similis n.sp. 18,21—dorsal view; 19,22—lateral view; 20,23—ventral view: 18–20—holotype male; 21–23—paratype female. Scale bar = 1mm. Description. Holotype , male; coloration reddish to blackish brown; eyes reddish; body structures except median parts of pro-, meso-, metasternum and vltg II–VII densely covered with setigerous tubercles; antennae and legs beset with many erect setae. Head. Genae exceeding clypeus, reaching to 2/3 of first antennal segment and leaving a small notch at apex, lateral margins constricted; clypeus raised; antenniferous tubercles dentiform, divergent anteriorly; antennae 1.57 times as long as width across eyes; vertex with wide longitudinal tuberculate ridge flanked by 2 (1+1) small callous pits; rostrum not reaching limits of rostral groove, rostral groove deep and narrow, closed posteriorly. FIGURES 24–33. Longitergus similis n.sp. male genitalic structures. 24–26—pygophore dorsal, lateral and ventral; 27–30— right paramere in different positions; 31–33—phallus in dorsal, lateral and ventral position. Scale bar = 0.2mm for Figs. 27–30. Pronotum . More than 3x as wide as long at midline; anterolateral angles slightly angularly expanded not reaching collar, lateral margins with many setigerous tubercles; disc with a median longitudinal granulate ridge, flanked by 2 (1+1) smooth oval callous depressions and 2 (1+1) lunate granular carinae laterally; posterior margin sinuate. Mesonotum. Scutellum distinct, disk with a wide median granulate ridge; anterolateral angles not reaching lateral margins of anteriorly produced wing pads; these oval, lateral margins granulate and elevated; posterior margin convex; suture separating metanotum bisinuate. Metanotum. Fused to mtg I, with a triangular median elevation, interrupted posteriorly by a shallow median depression; lateral sclerites sloping toward lateral margins; posterior margin slightly concave. Abdomen. Surface granulate, lateral margins slightly rounded with erect setae; tergal disk elevated along midline as high as metanotal elevation; fused mtg II with 2 (1+1) oval elevations depressed at middle; rounded ridge of mtg III–VI with distinct scent gland openings; lateral parts sloping with usual pattern of apodemal impressions; mtg VI narrow, sloping posteriorly; deltg II–VII separated by sutures, surface granulate; tergite VII raised posteriorly for reception of pygophore. Venter. Prosternum with median elevation, separated from mesosternum by a suture, posterior borders of propleura with oblique tuberculate carinae, visible from above; meso- and metasternum flattened medially, with shallow longitudinal impression; vltg III–VI with smooth triangular spots medially, flanked by the 1+2+2 pattern of apodemal impressions; mst VII transversely carinate posteriorly; spiracles II–VII ventral, remote from lateral margin, VIII lateral and visible from above. Genitalic structures . Pygophore globular, median triangular elevation extending posteriorly ( Figs. 3–5 ); ptg VIII small, shorter than pygophore; parameres as in Figs. 6–8 ; phallus as Figs. 9–11 . Legs. Slender, femora moderately inflated, tibiae cylindrical, nearly straight, preapical comb on fore tibia present, claws with thin pulvilli. Female. Generally as male but of larger size and more rounded abdomen; tergite VII roundly elevated, ptg VIII triangular, shorter than produced tricuspidate tergite IX+X. Measurements. Holotype male: length 4.5; length / width of head 1.0/1.15; l/w pronotum 0.5/1.6; l/w scutellum 0.4/1.4; length of antennal segment I/II/III/IV = 0.5/0.35/0.5/0.45; ratio length of antennae / width of head 1.57; width of abdomen across tergite IV 2.3. Variation of size in paratypes : males 4.2–4.5; females 4.9–5.0. Etymology: The specific name refers to the long tergal plate anteriorly produced because of the fusion with mtg II. Distribution: So far only recorded from northern Vietnam (Catba).