Xynocoris egeri 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 : 298-299

Xynocoris egeri Garbelotto & Campos sp. nov.

( figs. 2E ; 8E; 9 D)

Etymology. The epithet is a tribute to Dr. J. E. Eger, as an acknowledgement for his contribution to this work by loaning specimens.

Type-locality. Brazil, Piracicaba (-22.7167; -47.6333).

Female Holotype. BRAZIL, São Paulo: Piracicaba, 10.X.1965, C. A. Triplehorn, [-22.7167; -47.6333], BL Trap, Alitocoris sp. det. J. E. Eger, 2008 ( JEE) Deposited in: AMNH .

Paratype. COSTA RICA, Alajuela: La Fortuna (15km SW Volcán Arenal, Arenal Vista Logde), 1 female, 13–15.VIII.1995, J. E. Eger, [10.4833; -846500], Collected at Mercury Vapor and Black Light Costa Rica collecting permit No 0 0 113412 (JEE) Deposited in: AMNH .

Description. Body oval, brown; punctures black; small yellowish spots denser on corial surface. Legs light brown, contrasting with body. Antennae five-segmented.

Head with spots on vertex, clypeus and mandibular plates; punctures forming wrinkles on vertex. Apices of mandibular plates juxtaposed, exceeding clypeus by a distance equivalent to the ocellar diameter; lateral margins of mandibular plates slightly reflected. Eyes not pedunculated. Anteocular processes 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 III; proportion of rostral segments: I<II>III≈IV.

Pronotum with punctures forming wrinkles posterior to cicatrices; yellowish spots inconspicuous. Cicatrices slightly tumid, with punctures. Anterior angles of pronotum with projections parallel to posterior margins of eyes, exceeding laterally the eye by almost the eye diameter. Anterolateral and posterolateral margins subrectilinear. Scutellum with yellowish spots inconspicuous on disc; punctures forming wrinkles. Corium reaching posterior margin of connexival segment VI; spot on apex of radial vein inconspicuous. Hemelytral membrane surpassing the apex of abdomen, bearing eight veins. Pleurae and sterna black. Evaporatorium black; peritreme almost reaching the margin of evaporatorium. Legs light brown contrasting with body color; femora with brown circular spots, tibiae dorsally brown.

Segments of connexivum bearing middle yellowish spots. Abdomen ventrally brown; punctures shallow to inconspicuous on disc. Yellowish maculae before spiracles present (fig. 8E).

Female. Measurements (n=2): head length, 1.33 ± 0.11 (1.25–1.40); width, 1.98 ± 0.04 (1.95–2.00); pronotum length, 1.98 ± 0.04 (1.95–2.00); width, 4.68 ± 0.11 (4.60–4.75); scutellum length, 3.20 ± 0.07 (3.15–3.25); width, 2.73 ± 0.04 (2.70–2.75); length of antennal segments: I, 0.50 ± 0 (0.50–0.50); II, 0.43 ± 0.04 (0.40–0.45); III, 0.78 ± 0.04 (0.75–0.80); IV, 0.85 ± 0.07 (0.80–0.90); V, 1.45 ± 0.07 (1.40–1.50); length of rostrum segments: I, 0.80 ± 0.14 (0.70–0.90); II, 1.43 ± 0.11 (1.35–1.50); III, 0.88 ± 0.11 (0.80–0.95); IV, 0.78 ± 0.11 (0.70–0.85); total length, 7.24 ± 0.20 (7.10–7.38); abdominal width, 4.65 ± 0.05 (4.62–4.69).

Genitalia. Gonocoxites 8 longer than wide; posterior margins convex; posterolateral projection over laterotergites 8 surpassing median portion of posterior margin; sutural angles rounded; disc with low callus closer to posterior margins (fig. 8E). Laterotergites 8 longer than wide; middle yellowish spot present (fig. 8E). Gonocoxites 9 triangular, longitudinal suture conspicuous (fig. 8E). Laterotergites 9 reaching the band connecting laterotergites 8; apex tumid (fig. 8E). Thickening of vaginal intima subrectangular ( fig. 9D ). Ring sclerites placed close to but not touching the lateral limits of the thickening of gonapophyses 9. Ductus receptaculi anterior to vesicular area shorter than the intermediary duct; vesicular area at least three times longer than pars intermedialis plus capsula seminalis ( fig. 9D ). Length of tubular portion of ductus receptaculi posterior to the vesicular area equals half the length of vesicular area ( fig. 9D ). Pars intermedialis slightly wider on middle, capsula seminalis bearing apical processes ( fig. 9D ).

Male. Unknown.

Comments. X. egeri sp. nov. ( fig. 2E ) is the sister group of X. insularis sp. nov. ( fig. 1 ; Garbelotto et al. 2013, ‘sp. 16’); diagnostic characters of X. egeri sp. nov. are the eyes not pedunculated, the anterior margin of scutellum without median spot and 1+1 light brown spots near the fovea, and the shape of genital plates (fig. 8E).

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.

FIGURE 9. Xynocoris, female receptaculum seminis and ausenwand, ventral. A, X. parvus; B, X. tuberculatus sp. nov.; C, X. recavus sp. nov.; D, X. egeri sp. nov.; E, X. calosus sp. nov.; F, X. meridionalis sp. nov.; G, X. lucidus sp. nov. Abbreviations: cm, conical microsculptures; cs, capsula seminalis; dr, ductus receptaculi; gc9, gonocoxites 9; gp9, gonapophyses 9; id, inner duct of vesicular area; la9—laterotergite 9; md, median duct of vesicular area; od, outer duct of vesicular area; pi, pars intermedialis; rs, ring sclerites; tg9, thickening of gonapophyses 9; vi, thickening of vaginal intima. Scale bar = 1 mm.