Xynocoris insularis 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 : 298

Xynocoris insularis Garbelotto & Campos sp. nov.

( figs. 2D ; 8D).

Etymology. The epithet refers to the type locality; latin: insularis , from islands.

Type-locality. Trinidad, Tunapuna (10.6333; -61.3833).

Female Holotype. TRINIDAD, Country of Saint George: Tunapuna (Mount St Benedict Monastery vic. Pax Guest House), 12.III.1994, Lioyd R. Davis, Jr, [10.6333; -61.3833], Alitocoris sp det. J. E. Eger, 2006 ( FSCA) Deposited in: USNM .

Description. Oval elongated body, brown with yellowish spots between punctures; punctures black. Legs light brown, contrasting with body. Antennae five-segmented. Holotype with head and abdomen disjointed, preventing description of some aspects.

Head with spots mostly on middle; punctures not forming wrinkles. Mandibular plates juxtaposed, exceeding clypeus by a distance equivalent to the ocellar diameter; lateral margins of mandibular plates reflected. Eyes not pedunculated. Anteocular process little projected, attaining 1/3 of the eye width. Antennal tubercle covered dorsally by anteocular process. 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 wrinkles posterior to cicatrices; yellowish spots evenly distributed; cicatrices slightly tumid, yellowish on middle, delimited by punctures. Anterior angle of pronotum with projections parallel to posterior margins of eyes, exceeding laterally the eye by the eye diameter. Anterolateral margins slightly concave; posterolateral margins subrectilinear. Scutellum with yellowish spots between punctures; anterior margin with median spot and 1+1 yellowish spots near the fovea; punctures forming wrinkles, inconspicuous on apex. Corium with yellowish spots evenly distributed; spot on apex of radial vein equivalent to the ocellar diameter. Hemelytral membrane bearing six veins. Pleurae with yellowish spots. Evaporatorium black; peritreme surpassing half the width of evaporatorium. Legs light brown contrasting with body color; femora and tibiae with brown circular spots; tarsi brown.

Segments of connexivum bearing middle yellowish spot. Abdomen pubescent; punctures and yellowish spots near lateral margins, inconspicuous on disc. Yellowish maculae before spiracles present (fig. 8D).

Female. Measurements (n=1): head length, 1.55; width, 1.80; pronotum length, 1.75; width, 4.00; scutellum length, 2.85; width, 2.30; length of antennal segments: I, 0.45; II, 0.35; III, 0.70; IV, 0.90; V, 1.40; length of rostrum segments: I, 0.80; II, 1.40; III, 0.75; IV, 0.75; total length, ±7.50; abdominal width, 4.35.

Genitalia. Genital plates slightly disjointed. Gonocoxites 8 longer than wide; posterior margins sinuous; middle projection over laterotergites 9 and posterolateral projection over laterotergites 8 equally extended; disc with low callus on middle near posterior and sutural margins; sutural and posterior margins bearing short setae (fig. 8D). Laterotergites 8 longer than wide; middle yellowish spot present (fig. 8D). Gonocoxites 9 triangular; longitudinal suture conspicuous (fig. 8D). Laterotergites 9 reaching the band connecting laterotergites 8; apex tumid (fig. 8D).

Male. Unknown.

Comments. Xynocoris insularis sp. nov. ( fig. 2D ) is the sister group of X. egeri sp. nov. ( fig. 1 ; Garbelotto et al. 2013, ‘sp. 12’); diagnostic characters are the elongated body shape, anterolateral margins of pronotum concave in dorsal view, and the shape of genital plates (fig. 8D).

Figures

FIGURE 1. Relationships of the Xynocoris clade (Herrichela clade of Ochlerini) modified from Garbelotto et al. (2013).

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.