Xynocoris recavus Garbelotto & Campos,

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: 295-296

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-FFCB-3A6A-B3C7-7897739CC64B

treatment provided by

Plazi

scientific name

Xynocoris recavus Garbelotto & Campos
status

sp. nov.

Xynocoris recavus Garbelotto & Campos  sp. nov.

( figs. 2 CView FIGURE 2; 5 C, FView FIGURE 5; 6 C, G, KView FIGURE 6; 7 I – LView FIGURE 7; 8 C; 9View FIGURE 9 C)

Etymology. The epithet refers to the deep concavity of the dorsal rim of pygophore; latin: recavus  , concave.

Type locality. Brazil, Mato Grosso (- 15.4333; -55.7500).

Male Holotype. BRAZIL: Mato Grosso: (9 km W of Chapada dos Guimarães), 27.X. 1993, G. M. Nishida, [- 15.4333; -55.7500], at MV Light ( BPBM) Deposited in: BPBMGoogleMaps  .

Paratypes. VENEZUELA, Aragua: El Limon (450m), 1 male, 25.V. 1966, F. Fernandez. Y., [9.8500; -66.9000] ( MIZA) Deposited in: MIZAGoogleMaps  . BRAZIL, Mato Grosso: (9km W of Chapada dos Guimarães), 2 females and 2 males, 27.X. 1993, G. M. Nishida, [- 15.4333; -55.7500], at MV Light ( BPBM) Deposited in: BPMPGoogleMaps  ; Minas Gerais: Viçosa, 1 male, 26.XI. 1986, P. S. Fiuza F., [-20.7500; - 42.8833] ( UFVB) Deposited in: UFRGGoogleMaps  ; São Paulo: Piracicaba, 2 males, 10.X. 1965, [- 22.7167; - 47.6333] ( DBTC) Deposited in: DBTCGoogleMaps  ; 1 male, 10.X. 1965, [- 22.7167; - 47.6333] ( AMNH) Deposited in: AMNHGoogleMaps  ; Rio de Janeiro: Itatiaia, 1 female, 6.XI. 1950, M. Zikán, [-22.5000; - 44.5667] ( MNRJ) Deposited in: MNRJGoogleMaps  ; Rio de Janeiro, 1 male, I. 1977, M. Alvarenga, [-22.9000; - 43.2333] ( MNRJ) Deposited in: UFRGGoogleMaps  .

Description. Body oval, brown; punctures black, confluent and forming 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 conspicuously wider in males.

Head with yellowish median longitudinal spot from apex of mandibular plates to the vertex; punctures non confluent. Apices of mandibular plates sometimes not touching each other, exceeding clypeus by twice the ocellar diameter; lateral margins strongly reflected. Eyes on short peduncle. Anteocular processes projected, with punctures, attaining half of the width of eye. Antennal tubercle covered dorsally by anteocular process. Antennae brown, five-segmented; first segment bearing dorsal longitudinal yellowish spot; segments III –V paler; proportion of antennal segments: I≈II<III≈IV<V, fifth the longest. Ventrally, mandibular plates apices and margin yellowish; with 1 + 1 yellowish carinae posterior to the eyes. Bucculae without anterior tooth. Rostrum yellowish, second segment reaching mesocoxae, apex on urosternite III; proportion of rostral segments: I<II>III>IV.

Pronotum with punctures forming wrinkles posterior to cicatrices; yellowish spots between punctures; cicatrices slightly tumid. Anterior angles of pronotum with projections parallel to the posterior margins of eyes, exceeding laterally the eye by almost the eye diameter. Anterolateral margins slightly concave, reflected, and expanded on anterior half; posterolateral margins slightly convex. Scutellum with yellowish spots between punctures; anterior margin with median spot and 1 + 1 yellowish spots near the fovea, sometimes inconspicuous; punctures forming wrinkles evenly distributed, inconspicuous on apex. Corium reaching middle of connexival segment VI; spot on apex of radial vein equivalent to the ocellar diameter. Hemelytral membrane reaching or surpassing the apex of abdomen, bearing seven or eight veins. Pleurae with yellowish spots between punctures. Evaporatorium black; peritreme surpassing half the evaporatorium width. Legs yellowish contrasting with body color; femora and tibiae with brown circular spots, if confluents forming ventral transversal bands on tibiae.

Segments of connexivum bearing middle yellowish spot. Abdomen pubescent; yellowish spots distributed on lateral portions; punctures inconspicuous on disc. Yellowish maculae before spiracles present (fig. 8 C).

Male. Third antennal segment twice wider than fourth segment. Measurements (n= 9): head length, 1.28 ± 0.13 (1.08–1.44); width, 1.97 ± 0.08 (1.86–2.16); pronotum length, 1.96 ± 0.15 (1.79–2.25); width, 4.69 ± 0.35 (4.41–5.59); scutellum length, 3.18 ± 0.23 (2.89–3.68); width, 2.82 ± 0.12 (2.70–3.09); length of antennal segments: I, 0.55 ± 0.03 (0.49–0.59); II, 0.43 ± 0.09 (0.35–0.66); III, 1.01 ± 0.12 (0.83–1.17); IV, 0.85 ± 0.07 (0.74–0.96); V, 1.43 ± 0.19 (1.21–1.86); length of rostrum segments: I, 0.78 ± 0.04 (0.75–0.85); II, 1.26 ± 0.04 (1.20–1.35); III, 0.82 ± 0.07 (0.75–0.95); IV, 0.68 ± 0.04 (0.60–0.70); total length, 7.85 ± 0.22 (7.56–8.18); abdominal width, 5.10 ± 0.25 (4.80–5.68).

Genitalia. Pygophore. Dorsal rim deeply concave; distance between projections of dorsal rim equals 1.5 times the width of each projection; posterior projections bearing a tuft of short setae ( fig. 5 CView FIGURE 5). Projections of inferior layer of ventral rim subtriangular, apices slightly tumid placed laterally to segment X ( fig. 5 CView FIGURE 5). Superior layer of ventral rim with small tumid areas near median margin of projections of inferior layer ( fig. 5 CView FIGURE 5). Ventral rim uniformly excavated, forming a shallow, narrow aperture covering the lateral portions of segment X ( fig. 5 CView FIGURE 5). Carinae continued from the conical projection of inferior layer low and conspicuous ( fig. 5 FView FIGURE 5). Segment X slightly wider at base, with an inconspicuous boundary between sclerotized and membranous areas; lateral margins sinuous; apex bearing short setae on lateral third ( fig. 5 CView FIGURE 5); genital opening reaching the apex of segment X ( fig. 5 FView FIGURE 5). Parameres with apical angle truncated ( fig. 6 C, G, KView FIGURE 6); head at most reaching the margin of ventral rim ( fig. 5 FView FIGURE 5), with short setae on ventral surface; posterior margin subrectilinear ( fig. 6 C, G, KView FIGURE 6). Phallus: lateral projection of phallotheca exceeding the dorsal margin, apex truncated ( fig. 7 LView FIGURE 7). Dorsal process of vesica short, not bilobed ( fig. 7 IView FIGURE 7). Ductus seminis distalis twisted, longer than twice the phallotheca length, apical gutter deep ( fig. 7 I, K, LView FIGURE 7).

Female. Measurements (n= 3): head length, 1.17 ± 0.16 (1.01–1.32); width, 1.92 ± 0.21 (1.68–2.06); pronotum length, 1.95 ± 0.26 (1.68–2.21); width, 4.67 ± 0.60 (4.02–5.19); scutellum length, 3.23 ± 0.44 (2.73–3.53); width, 2.85 ± 0.35 (2.46–3.14); length of antennal segments: I, 0.57 ± 0.08 (0.50–0.66); II, 0.47 ± 0.06 (0.40–0.53); III, 0.90 ± 0.11 (0.78–0.99); IV, 0.82 ± 0.05 (0.78–0.87); V, 1.52 ± 0 (1.52 – 1.52); length of rostrum segments: I, 0.77 ± 0.03 (0.75–0.80); II, 1.30 ± 0.10 (1.20–1.40); III, 0.9 ± 0.05 (0.85–0.95); IV, 0.72 ± 0.03 (0.70–0.75); total length, 7.92 ± 0.84 (7.02–8.67); abdominal width, 4.96 ± 0.62 (4.25–5.39)

Genitalia. Gonocoxites 8 longer than wide; posterior margins slightly sinuous; middle projection over laterotergites 9 and posterolateral projections over laterotergites 8 equally extended; disc with low callus on middle (fig. 8 C). Laterotergites 8 wider than long, bearing shallow punctures and middle yellowish spot (fig. 8 C). Gonocoxites 9 diamond-shaped; longitudinal suture conspicuous (fig. 8 C). Laterotergites 9 at most reaching the band connecting laterotergites 8 (fig. 8 C). Thickening of vaginal intima subtriangular ( fig. 9 CView FIGURE 9). Ring sclerites placed close to but not touching the lateral limits of the thickening of gonapophyses 9 ( fig. 9 CView FIGURE 9). Ductus receptaculi anterior to the vesicular area as wide as the intermediary duct; vesicular area at least twice the length of pars intermedialis plus capsula seminalis ( fig. 9 CView FIGURE 9). Length of tubular portion of ductus receptaculi posterior to the vesicular area equals 1 / 3 the length of vesicular area ( fig. 9 CView FIGURE 9). Pars intermedialis cylindrical, at least four times longer than capsula seminalis, the latter bearing apical processes ( fig. 9 CView FIGURE 9).

Comments. Xynocoris recavus  sp. nov. ( fig. 2 CView FIGURE 2) is placed on the base of ‘clade L’, the first dichotomy of Xynocoris  gen. nov. clade ( fig. 1View FIGURE 1; Garbelotto et al. 2013, ‘sp. 04’). Diagnostic characters of X. recavus  sp. nov. are the rostral length, reaching at most the posterior margin of urosternite III, the dorsal rim of pygophore deeply concave, and the ventral rim uniformly excavated ( fig. 5 C, FView FIGURE 5). This is also the only species of Xynocoris  gen. nov. without bilobed dorsal process of vesica and with the apex of basal processes of phallotheca truncated ( fig. 7 I, LView FIGURE 7).

BPBM

USA, Hawaii, Honolulu, Bernice P. Bishop Museum

MIZA

Venezuela, Maracay, Museuo del Instituto de Zoologia Agricola

BPMP

BPMP

UFVB

Brazil, Minas Gerais, Vicosa, Universidade Federal de Vicosa, Museum of Entomology

UFRG

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

DBTC

Donald B. Thomas

AMNH

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

MNRJ

Brazil, Rio de Janeiro, Sao Cristovao, Universidade do Rio Janeiro, Museu Nacional

BPBM

Bishop Museum

MIZA

Museo del Instituto de Zoologia Agricola Francisco Fernandez Yepez

UFVB

Vicosa, Universidade Federal de Vicosa, Museum of Entomology

UFRG

Instituto de Biologia

AMNH

American Museum of Natural History

MNRJ

Museu Nacional/Universidade Federal de Rio de Janeiro