Xynocoris parvus ( Distant, 1880 ), Distant, 1880

Garbelotto, Thereza De A., Campos, Luiz A. & Grazia, Jocelia, 2014, Xynocoris, new genus of Ochlerini from Central and South America (Hemiptera: Pentatomidae: Discocephalinae), Zootaxa 3869 (3), pp. 281-305: 285-287

publication ID

http://dx.doi.org/10.11646/zootaxa.3869.3.4

publication LSID

lsid:zoobank.org:pub:D4638897-09A5-4699-B2B9-CE079F3D9797

persistent identifier

http://treatment.plazi.org/id/D5668C50-FFC1-3A63-B3C7-7897735DC7E3

treatment provided by

Plazi

scientific name

Xynocoris parvus ( Distant, 1880 )
status

comb. nov.

Xynocoris parvus ( Distant, 1880)   comb. nov.

( figs. 2 A View FIGURE 2 ; 4 A – D View FIGURE 4 ; 5 A, D View FIGURE 5 ; 6 A, E, I View FIGURE 6 ; 7 A – D View FIGURE 7 ; 8 A; 9 View FIGURE 9 A)

Macropygium parvum Distant, 1880: 50   , tab. 6, fig. 3 View FIGURE 3 .

Alitocoris parvus, Sailer, 1950: 73   –74, figs. 4 View FIGURE 4 , 5 View FIGURE 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. 8 A).

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 View FIGURE 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 View FIGURE 5 A—pil). Superior layer of ventral rim tumid near the apices of projections of inferior layer ( fig. 4 C View FIGURE 4 , D—arrow). Median third of ventral rim slightly emarginated forming a shallow, narrow aperture covering the lateral portions of segment X ( fig. 5 D View FIGURE 5 ). Carinae continued from the conical projection of inferior layer inconspicuous ( fig. 5 D View FIGURE 5 ). Segment X slightly wider at base, with a clear boundary between sclerotized and membranous areas; lateral margins subrectilinear; apex bearing short setae ( fig. 5 View FIGURE 5 A—X). Parameres with apical angle acutely curved; head at most reaching the margin of ventral opening of pygophore ( fig. 6 A, E, I View FIGURE 6 ). Phallus: lateral projection of phallotheca exceeding the dorsal margin ( fig. 7 View FIGURE 7 D—lph). Dorsal process of vesica bilobed ( fig. 7 A, C View FIGURE 7 , D—v, vp). Ductus seminis distalis twisted and short, little surpassing the base of phallotheca ( fig. 7 A View FIGURE 7 , D—ds)

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. 8 A—gc 8). Laterotergites 8 as long as wide; middle light brown spot present in some specimens (fig. 8 A—la 8). Gonocoxites 9 trapezoidal; longitudinal suture conspicuous (fig 8 A—gc 9). Laterotergites 9 reaching at most the band connecting laterotergites 8; sutural angles not touching each other (fig. 8 A—la 9). Thickening of vaginal intima subrectangular ( fig. 9 A View FIGURE 9 ). Ring sclerites placed close to but not touching the lateral limits of the thickening of gonapophyses 9 ( fig. 9 A View FIGURE 9 ). 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. 9 A View FIGURE 9 ). Length of tubular portion of ductus receptaculi posterior to the vesicular area equals half the length of vesicular area ( fig. 9 A View FIGURE 9 ). Pars intermedialis cylindrical, at least four times longer than capsula seminalis, the latter bearing apical processes ( fig. 9 A View FIGURE 9 ).

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 View FIGURE 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 View FIGURE 5 A—X), and the females with gonocoxites 8 projected over the base of laterotergites 9 (fig. 8 A—gc 8, la 9).

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) GoogleMaps   ; Cartago: Turrialba , 1 male, 10.VI. 1948, F. Schrader, [9.9000; - 83.6833], ♂ 525 ( AMNH) GoogleMaps   ; 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) GoogleMaps   ; (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 View Materials _ 542200 # 2076 ( INBio) GoogleMaps   . PANAMA, Colon: Coco Solo ( Coco Solo Hospital , Canal Zone ), 2 females, 29.IV. 1972, D. Engleman, [9.3700; - 79.8817], L. T. ( KSBS) GoogleMaps   ; 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) GoogleMaps   ; Las Cumbres, 1 female, 20.X. 1976, Henk Wolda , [9.0833; - 79.5333], Lt. Trap , 9 °06’N 79 ° 32 ’W ( FSCA) GoogleMaps   . 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) GoogleMaps   ; Aragua: Maracay (450m), 1 female, 2.IX. 1963, E. Osuma, [10.2469; - 67.5958], En la luz ( MIZA) GoogleMaps   ; 1 female, 2.X. 1963, E. Osuma, [10.2469; - 67.5958] ( MIZA) GoogleMaps   ; 1 female, 7.XI. 1963, E. Osuma, [10.2469; - 67.5958], En la luz ( MIZA) GoogleMaps   ; El Limon (450m), 1 female, 13.IV. 1963, E. Osuma, [9.8500; -66.9000], em luz ( MIZA) GoogleMaps   ; 1 female, 22.V. 1977, F. Fernandez Y., [9.8500; -66.9000], Luz de Mercúrio ( MIZA) GoogleMaps   ; Carabobo: Samón Mocho , 1 female, 26.X. 1983, [10.1206; - 67.8914], trampa de luz ( MIZA) GoogleMaps   ; Tacarigua , 1 female, 26.IX. 1977, J. Clavijo & C. Michelang, [10.0900; - 67.9197] ( MIZA) GoogleMaps   . SURINAME, Paramaribo: Paramaribo , 1 female, 3.I. 1946, “illegíble”, [5.8333; - 55.1667], ( UFRG) GoogleMaps   . 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) GoogleMaps   . 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) GoogleMaps   .

AMNH

USA, New York, New York, American Museum of Natural History

DBTC

Donald B. Thomas

INBio

Costa Rica, Santo Domingo de Heredia, Instituto Nacional de Biodiversidad (INBio)

KSBS

USA, Kansas, Lawrence, University of Kansas, State Biological Survey of Kansas

FSCA

USA, Florida, Gainesville, Division of Plant Industry, Florida State Collection of Arthropods

MIZA

Venezuela, Maracay, Museuo del Instituto de Zoologia Agricola

UFRG

Brazil, Rio Grande do Sul, Porto Alegre, Universidade Federal do Rio Grande do Sul, Instituto de Biologia

INPA

Brazil, Amazonas, Manaus, Instituto Nacional de Pesquisas da Amazoonia, Colecao Sistematica da Entomologia

JEE

JEE

NEW

University of Newcastle

AMNH

American Museum of Natural History

INBio

National Biodiversity Institute, Costa Rica

KSBS

Lawrence, University of Kansas, State Biological Survey of Kansas

FSCA

Florida State Collection of Arthropods, The Museum of Entomology

MIZA

Museo del Instituto de Zoologia Agricola Francisco Fernandez Yepez

UFRG

Instituto de Biologia

INPA

Instituto Nacional de Pesquisas da Amazonia

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Pentatomidae

Genus

Xynocoris

Loc

Xynocoris parvus ( Distant, 1880 )

Garbelotto, Thereza De A., Campos, Luiz A. & Grazia, Jocelia 2014
2014
Loc

Alitocoris parvus

Rolston 1992: 24
Sailer 1950: 73
1950
Loc

Macropygium parvum

Distant 1880: 50
1880