Aradidae from Vietnam III. Trichosomaptera gibbosa n. gen., n. sp., an apterous Carventinae (Hemiptera: Heteroptera: Aradidae) Author Pham, Minhlan Author Bai, Xiaoshuan Author Heiss, Ernst Author Cai, Wanzhi text Zootaxa 2014 3768 3 395 400 journal article 46342 10.11646/zootaxa.3768.3.7 462738a4-2ebf-4021-b774-a17c24b40a6f 1175-5326 230168 689DB881-F95E-46D9-8A24-AA91D28DE593 Trichosomaptera gibbosa n.sp. Bai, Heiss & Cai (Photos 1–16) Material examined: Holotype male labelled: Vietnam , Lam Dong Prov. / Bidoup Nui Ba National Park / Giang Ly, 1500 m / N 12 0 11.085 E 108 0 41.051 / 11 V 2012 , M. L. Pham// Holotype male / Trichosomaptera n.gen. / gibbosa n.sp. / des. Bai,Heiss,Cai 2013 // ( CAU ). Paratypes : 3 males , 4 females , same data as holotype ( CAU , EMIH , CEHI ); 2 males , 1 female , Vietnam , Lam Dong Prov. / Da Lat, 1500 m / N 12 0 30 ’ E 108 0 25 / 7 VII 2011 Pham // ( CAU , CEHI ); 2 males , 6 females , same location as above, 23–24.IX.2011 , Bai & Pham leg. ( CAU , CEHI ). The paratypes are designated and labelled accordingly. Description. Male, apterous; coloration ferruginous red, surface with glabrous areas and structures with erect yellowish setae; abdomen subparallel, truncate posteriorly (photo 1). PHOTOS 1–6. Trichosomaptera gibbosa n. gen. n. sp. 1,2,3— paratype male; 4,5,6— paratype female. 1,2—dorsal view; 2,5—lateral view; 3,6—ventral view. Scale bar 1.1mm . PHOTOS 7–16. Trichosomaptera gibbosa n. gen. n. sp. , genitalic structures of male. 7,8,9—pygophore in dorsal, lateral and ventral view; 10,11,12,13—right paramere in different positions; 14,15,16—phallus in dorsal, lateral and ventral view. Scale bar 0.4mm for photo 7–9; 0.2mm for photos 10–13; 0.33mm for photos 14–16. Head . About 1.37x as long as width across eyes; clypeus conical longitudinally raised with a preapical tubercle, reaching 2/5 of antennal segment I; genae thin as long as clypeus; antenniferous lobes diverging anterolaterally with subacute apex; antennae about 1.87 x as long as width of head across eyes; segment I longest and thickest beset with long erect setae, II thinner with short appressed setae tapering toward base, III thinnest, pedunculate at base, IV shortest, fusiform with pilose apex; length of antennal segments I–IV = 0.5 /0.3 /0.4 / 0.3 mm ; eyes distinctly stylate; postocular lobes straightly converging posteriorly to constricted neck, lateral margins with erect setae; vertex with 2(1+1) longitudinal ridges beset with shorter erect setae with a deep groove between them. Pronotum . Much wider than long, lateral sclerites raised with tufts of erect setae, their lateral margins rounded; median depression glabrous with a short longitidinal groove posteriorly, collar ring-like; posterior margin strongly convex at middle, separated from mesonotum by a deep groove. Mesonotum . Strongly transverse with raised lateral sclerites beset with erect setae, lateral margins rounded; median sclerite depressed with 2(1+1) oval longitudinal ridges beset with long setae, a deep groove between them; this sclerite posteriorly protruding and fused to metanotum without a visible suture; posterior margins laterally of median sclerite arcuate and marked by deep grooves. Metanotum . Much wider than long, structure of large oval lateral lobes of metanotum as of mesonotum; median glabrous and slightly concave sclerite fused to mesonotum and mtg I+II; these with 2(1+1) tufts of setae lateral of median plate, lateral parts glabrous punctate and sloping. Abdomen . Anterior margin of tergal plate strongly convex at middle, lateral margins rounded, posterior margin slightly concave; mtg III raised into a distinct oval hump, its surface densely beset with long setae; median ridge like elevation of mtg IV–VI smooth, lateral parts glabrous with deep punctures; deltg II+III fused, III–VII separated by sutures; their surface with apodemal impressions laterally delimited by a longitudinal carina along lateral margin; mtg VII raised medially for reception of pygophore; lateral margins of deltg IV–VII with increasing angular projections on anterior half bearing spiracles IV–VII which are visible from above. Venter . Spiracles II ventral, III–IV sublateral, V–VII lateral on distinct tubercles, all except II visible from above, VIII terminal on ptg VIII; pro-, meso, and metasternum fused to mst II+III forming a smooth glabrous polygonal plate (photo 3,6); mst IV–VI smooth at middle, rugose laterally; sternite VII with a longitudinal smooth ridge medially and with 2(1+1) tubercles on either side. Genitalic structures. Pygophore (photo 7–9) conical with a dorsal posteriorly constricted conical ridge; ptg VIII short and clavate, parameres slender with hook-like apex (photo 10–13), phallus as photo 14–16. Female . Generally as male but of larger size and posteriorly constricted abdomen; elevated hump of mtg III well developed as in male (photo 4,5); mst VII with convex anterior margin, ptg VIII shorter than posteriorly produced tricuspidate tergites IX+X. Measurements . Holotype male: Length 4.6, width of abdomen 2.0; head length/width 1.1 / 0.8; pronotum l / w 0.6 / 1.4; Scutellum l / w 0.5 / 0.6; pygophore l / w 0.4 / 0.7. Paratypes ♂ (n=4), ♀ (n=4)]. Length ♂ 4.15–4.58, ♀ 5.42–5.44; width of abdomen ♂ 2.10–2.47, ♀ 2.81–2.93; head length ♂ 0.94–1.09, ♀ 1.12–1.18; width ♂ 1.04– 1.14, ♀ 1.27–1.29; pronotum ♂ 0.47–0.54, ♀ 0.55–0.58; width ♂ 1.38–1.57, ♀ 1.74–1.74. Length of antennal segments I–IV: length ♂ 0.43–0.46, 0.31–0.34, 0.48–0.56, 0.36–0.41; ♀ 0.51–0.52, 0.36–0.37, 0.56–0.59, 0.42; pygophore length 0.41–0.51, width 0.64–0.72. Etymology . Refers to the median gibbous hump of mtg III. Distribution. The only known species was found in Lam Dong Province of Vietnam .