Xynocoris, new genus of Ochlerini from Central and South America (Hemiptera: Pentatomidae: Discocephalinae) Author Garbelotto, Thereza De A. Universidade Federal do Rio Grande do Sul, Dep. Zoologia, Av. Bento Gonçalves 9500, 91501 - 970, Prédio 43435, Porto Alegre RS therezagarbelotto@hotmail.com Author Campos, Luiz A. Universidade Federal do Rio Grande do Sul, Dep. Zoologia, Av. Bento Gonçalves 9500, 91501 - 970, Prédio 43435, Porto Alegre RS luiz.campos@ufrgs.br Author Grazia, Jocelia Universidade Federal do Rio Grande do Sul, Dep. Zoologia, Av. Bento Gonçalves 9500, 91501 - 970, Prédio 43435, Porto Alegre RS jocelia@ufrgs.br text Zootaxa 2014 2014-10-01 3869 3 281 305 journal article 42463 10.11646/zootaxa.3869.3.4 6b71031e-2f40-447a-b13b-c9e7daa83fdb 1175-5326 224795 D4638897-09A5-4699-B2B9-CE079F3D9797 Xynocoris parvus ( Distant, 1880 ) comb. nov. ( figs. 2A ; 4A–D ; 5A, D ; 6A, E, I ; 7A–D ; 8A; 9 A) Macropygium parvum Distant, 1880 : 50 , tab. 6, fig. 3 . Alitocoris parvus , Sailer, 1950 : 73 –74, figs. 4 , 5 , 8, 14, 18 (synonymy, redescription); Rolston, 1992 : 24 , figs. 44–45; Campos & Grazia, 2006 : p.153 (phylogeny, list); Garbelotto et al. , 2013 (phylogeny). Type locality. Panama. Type material. Distant’s description was based on a series of specimens listed as from the Distant Collection, now belonging to the British Museum, London; and from the Signoret Collection, now belonging to the Naturhistorisches Museum, Vienna ( Sailer 1950 ). We were not able to locate the type specimens so we confirmed the identity of the specimens examined using both the description and illustrations by Sailer (1950) , and specimens identified by Dr. L.H. Rolston . Description. Body oval, brown to dark brown; punctures black, confluent and forming shallow wrinkles on pronotum and scutellum; small yellowish spots evenly distributed over all body surface. Legs light brown, contrasting with body. Antennae five-segmented, third segment of males little widened. Head with spots mostly on mandibular plates; punctures forming wrinkles between base of mandibular plates and posterior margin of head. Apices of mandibular plates juxtaposed, exceeding clypeus by a distance equivalent to the ocellar diameter; lateral margins of mandibular plates slightly reflected, ventrally yellowish. Eyes on short peduncle. Anteocular processes little projected, attaining 1/3 of the eye width. Antennal tubercle covered dorsally by anteocular processes. Antennae brown, five-segmented; first segment bearing dorsal longitudinal yellowish spot; proportion of antennal segments: I≈II<III≈IV<V, fifth the longest. Ventrally with 1+1 yellowish carinae posterior to the eyes. Bucculae without anterior tooth. Rostrum yellowish, second segment reaching mesocoxae, apex on urosternite IV; proportion of rostral segments: I<II>III≈IV. Pronotum with punctures forming shallow wrinkles posterior to cicatrices; few yellowish spots between the punctures; cicatrices slightly tumid. Anterior angles of pronotum with projections parallel to posterior margins of eyes, exceeding laterally the eye by almost the diameter of eye. Anterolateral pronotal margins concave; posterolateral margins subrectilinear. Scutellum with yellowish spots evenly distributed; anterior margin with median spot and 1+1 yellowish spots near the fovea, sometimes inconspicuous; punctures forming shallow wrinkles, denser on disc and sometimes inconspicuous on apex. Corium reaching middle of connexival segment VI; spot on apex of radial vein equivalent to the diameter of ocellar, sometimes inconspicuous. Hemelytral membrane little surpassing the apex of abdomen, bearing 7–9 veins. Pleurae with yellowish spots; sterna brown. Evaporatorium brown to black; peritreme surpassing half the width of evaporatorium. Legs yellowish contrasting with body color; femora and tibiae with brown circular spots. Segments of connexivum bearing middle yellowish spot, at least on lateral half. Abdomen ventrally with yellowish spots near lateral margins, sometimes extending medially; punctures shallow to inconspicuous on disc. Yellowish maculae before spiracles present (fig. 8A). Male. Third antennal segment 1/3 wider than fourth segment. Measurements (n=9): head length, 1.20 ± 0.13. (1.01 –1.45); width, 1.90 ± 0.05 (1.83–1.95); pronotum length, 1.81 ± 0.08 (1.64–1.89); width, 4.42 ± 0.17 (4.16–4.79); scutellum length, 2.98 ± 0.14 (2.71–3.15); width, 2.68 ± 0.14 (2.46–2.96); length of antennal segments: I, 0.50 ± 0.05 (0.44–0.57); II, 0.41 ± 0.03. (0.38–0.44); III, 0.85 ± 0.06 (0.76–0.95); IV, 0.91 ± 0.05 (0.88–1.01); V, 1.46 ± 0.05 (1.39–1.58); length of rostrum segments: I, 0.85 ± 0.05 (0.82–0.95); II, 1.34 ± 0.08 (1.26–1.45); III, 0.92 ± 0.03 (0.88–0.95); IV, 0.84 ± 0.05 (0.76–0.88); total length, 7.57 ± 0.29 (7.00–7.90); abdominal width, 4.77 ± 0.26 (4.30–5.20). Genitalia. Pygophore. Dorsal rim concave ( fig. 5 A—dr); distance between projections of dorsal rim equals the width of each projection; posterior projections bearing a tuft of short setae. Projections of inferior layer of ventral rim subtriangular, apices tumid placed beneath the ventral surface of segment X ( fig. 5 A—pil). Superior layer of ventral rim tumid near the apices of projections of inferior layer ( fig. 4C , D—arrow). Median third of ventral rim slightly emarginated forming a shallow, narrow aperture covering the lateral portions of segment X ( fig. 5D ). Carinae continued from the conical projection of inferior layer inconspicuous ( fig. 5D ). Segment X slightly wider at base, with a clear boundary between sclerotized and membranous areas; lateral margins subrectilinear; apex bearing short setae ( fig. 5 A—X). Parameres with apical angle acutely curved; head at most reaching the margin of ventral opening of pygophore ( fig. 6A, E, I ). Phallus: lateral projection of phallotheca exceeding the dorsal margin ( fig. 7 D—lph). Dorsal process of vesica bilobed ( fig. 7A, C , D—v, vp). Ductus seminis distalis twisted and short, little surpassing the base of phallotheca ( fig. 7A , D—ds) FIGURE 2. Xynocoris , dorsal: A, X. parvus (male); B, X. tuberculatus sp. nov. (male holotype); C, X. recavus sp. nov. (male holotype); D, X. insularis sp. nov. (female holotype); E, X. egeri sp. nov. (female holotype); F, X. calosus sp. nov. (male holotype). Scale bars = 1 mm. Female. Measurements (n=20): head length, 1.17 ± 0.08 (1.01–1.26); width, 1.95 ± 0.08 (1.83–2.14); pronotum length, 1.86 ± 0.08 (1.70–1.95); width, 4.53 ± 0.22 (4.22–4.98); scutellum length, 3.08 ± 0.16 (2.84–3.34); width, 2.73 ± 0.15 (2.52–3.02); length of antennal segments: I, 0.53 ± 0.03 (0.50–0.57); II, 0.45 ± 0.05 (0.38–0.57); III, 0.77 ± 0.08 (0.63–0.95); IV, 0.92 ± 0.07 (0.69–1.01); V, 1.49 ± 0.11 (1.13–1.58); length of rostrum segments: I, 0.88 ± 0.05 (0.76–1.01); II, 1.39 ± 0.07 (1.26–1.51); III, 0.97 ± 0.06 (0.82–1.07); IV, 0.86 ± 0.06 (0.76–0.95); total length, 8.07 ± 0.27 (7.50–8.50); abdominal width, 5.04 ± 0.23 (4.70–5.70). Genitalia. Gonocoxites 8 little longer than wide; posterior margins sinuous; middle projection over laterotergites 9 and posterolateral projection over laterotergites 8 equally extended; sutural angles rounded; sutural margins bearing short setae, densely on posterior half; disc with low callus on middle, near posterior margin, sometimes with few short setae (fig. 8A—gc8). Laterotergites 8 as long as wide; middle light brown spot present in some specimens (fig. 8A—la8). Gonocoxites 9 trapezoidal; longitudinal suture conspicuous (fig 8A—gc9). Laterotergites 9 reaching at most the band connecting laterotergites 8; sutural angles not touching each other (fig. 8A—la9). Thickening of vaginal intima subrectangular ( fig. 9A ). Ring sclerites placed close to but not touching the lateral limits of the thickening of gonapophyses 9 ( fig. 9A ). Ductus receptaculi anterior to the vesicular area as wide as the intermediary duct; vesicular area at least three times longer than pars intermedialis plus capsula seminalis ( fig. 9A ). Length of tubular portion of ductus receptaculi posterior to the vesicular area equals half the length of vesicular area ( fig. 9A ). Pars intermedialis cylindrical, at least four times longer than capsula seminalis, the latter bearing apical processes ( fig. 9A ). Comments. Xynocoris parvus comb. nov. emerged as part of a polytomy (clade N of Garbelotto et al. 2013 —as Alitocoris parvus ) within the Xynocoris clade ( fig. 1 ). Diagnostic characters of X. parvus are the relatively smaller size, an unobvious enlargement of the third antennal segments of males as already noticed by Sailer (1950) , the anterolateral margins of pronotum slightly crenulated, the segment X of males with a clear limit between the sclerotized and the membranous areas ( fig. 5 A—X), and the females with gonocoxites 8 projected over the base of laterotergites 9 (fig. 8A—gc8, la9). Distribution. Panama, and the NEW RECORDS for Costa Rica, Venezuela, Suriname, Brazil and Ecuador. Material examined. COSTA RICA , Limon : Cairo , 1 male , 23.III.1944 , F. Schrader , [ 10.1333 ; -83.5333 ], ♂156 ( AMNH ) ; Cartago : Turrialba , 1 male , 10.VI.1948 , F. Schrader , [ 9.9000 ; -83.6833 ], ♂525 ( AMNH ) ; Puntarenas : ( Las Cruces Field Sta ( OTS ) near San Vito , 1000m ), 1 male , 24–27.V.1988 , B. Ratcliffe & M. Jameson , [ 8.8333 ; -82.9667 ] ( DBTC ) ; ( Est. Esquinas , Península de Osa , 200m ), 1 female ( Costa Rica Inbio CRI 0 0 1 928167) and 1 male ( Costa Rica Inbio CRI 0 0 1 928168), IV.1993 , J. F. Quesada , [ 8.6338 ; -83.4117 ], LS 301400_542200 # 2076 ( INBio ) . PANAMA , Colon : Coco Solo ( Coco Solo Hospital , Canal Zone ), 2 females , 29.IV.1972 , D. Engleman , [ 9.3700 ; -79.8817 ], L. T. ( KSBS ) ; Panama : Barro Colorado Isl. ( Canal Zone R. P.), 1 male , 23.IV.1962 , H. Ruckes , [ 9.1636 ; -79.8378 ], collected on NSF Grant G 9830 ( AMNH ) ; Las Cumbres , 1 female , 20.X.1976 , Henk Wolda , [ 9.0833 ; -79.5333 ], Lt. Trap , 9°06’N 79°32’W ( FSCA ) . VENEZUELA , (Kasmeza-zu), 1 female , 23.IX.1961 , F. Fernenandez Y. C. J. Rosalis ( MIZA ) ; Miranda : Capaya ( Est. Exp. Rio Negre , 100m ), 1 male , 10–12.XI.1977 , C. Andara & J. Clavijo , [ 10.4278 ; -66.2756 ] ( MIZA ) ; Aragua : Maracay ( 450m ), 1 female , 2.IX.1963 , E. Osuma , [ 10.2469 ; -67.5958 ], En la luz ( MIZA ) ; 1 female , 2.X.1963 , E. Osuma , [ 10.2469 ; -67.5958 ] ( MIZA ) ; 1 female , 7.XI.1963 , E. Osuma , [ 10.2469 ; -67.5958 ], En la luz ( MIZA ) ; El Limon ( 450m ), 1 female , 13.IV.1963 , E. Osuma , [ 9.8500 ; -66.9000 ], em luz ( MIZA ) ; 1 female , 22.V.1977 , F. Fernandez Y. , [ 9.8500 ; -66.9000 ], Luz de Mercúrio ( MIZA ) ; Carabobo : Samón Mocho , 1 female , 26.X.1983 , [ 10.1206 ; - 67.8914 ], trampa de luz ( MIZA ) ; Tacarigua , 1 female , 26.IX.1977 , J. Clavijo & C. Michelang , [ 10.0900 ; -67.9197 ] ( MIZA ) . SURINAME , Paramaribo : Paramaribo , 1 female , 3.I.1946 , “illegíble”, [ 5.8333 ; -55.1667 ], ( UFRG ) . BRAZIL , (Brazil Mrs Munroe, Mrs L. I. Munroe Brazil) 1 female , ( AMNH ) ; Roraima : ( Rio Uraricoera , Ilha de Maraca ), 1 female , 18–28.VIII.1987 , J. A. Rafael , L. S. Aquino , J. F. Vidal & Elias Binda , [ 3.4500 ; -60.9833 ], armadilha de luz , ( INPA ) . ECUADOR , Napo : 5 females e 2 males , Puerto Misahuali ( 1650–1900ft ), 6–19.IX.1998 , J. E. Eger [ -1.0345 ; -77.6637 ], 1°2’4.2’’S lat 77°39’49.2’’W long, Mercury vapor & ultraviolet lights ( JEE ) .