Xynocoris lucidus 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 : 302-303

Xynocoris lucidus Garbelotto & Campos sp. nov.

( figs. 3C ; 8I; 9 G)

Etymology. The epithet refers to the general color of this species, the palest in Xynocoris gen. nov.; latin: lucidus , light, bright.

Type locality. Brazil, Conceição de Macabu (-22.0667; -41.8667).

Female Holotype. BRAZIL, Rio de Janeiro: Conceição de Macabu , IX.1978, M. Alvarenga, [-22.0667; - 41.8667] ( MNRJ) Deposited in: MNRJ.

Paratypes. BRAZIL, Mato Grosso do Sul: Camapuã, 1 female, XII.1967, F. Silberbauer, [-19.5000; -54.0833], col. MCN 14.923, ( MCNZ 16 /96) Deposited in: MCNZ; Minas Gerais: Ponte Nova, 1 female, 20.XI.1979, Planalsucar, [-20.4000; -42.9000] ( UFVB) Deposited in: UFRG.

Description. Body oval elongated, light brown; punctures brown, forming shallow wrinkles on pronotum and scutellum. Legs yellowish, slightly contrasting with body. Antennae four-segmented.

Head with spots mostly on mandibular plates; punctures not confluent. Apices of mandibular plates not touching each other, exceeding clypeus by half the ocellar diameter; lateral margins of mandibular plates slightly reflected. Eyes on short peduncle. Anteocular processes obtuse. Antennal tubercle partially visible dorsally. Antennae light brown, four-segmented; proportion of antennal segments: I<II>III<IV, fourth the longest. Ventrally with 1+1 yellowish carinae posterior to the eyes. Bucculae without anterior tooth. Rostrum yellowish, second segment slightly surpassing mesocoxae, apex on urosternite V; proportion of rostral segments: I<II>III≈IV.

Pronotum with punctures forming shallow wrinkles on posterior half. Cicatrices flat. Anterior angle of pronotum with projections parallel to posterior margin of eye, exceeding laterally the eye by 1/3 the eye diameter. Anterolateral margins subrectilinear; posterolateral margins slightly convex. Scutellum with 1+1 ivory spots near the fovea; punctures denser on lateral margins. Corium reaching middle of connexival segment VI; spot on apex of radial vein twice the ocellar diameter. Hemelytral membrane not reaching the apex of abdomen, bearing six veins. Pleurae light brown to brown, with deep punctures. Evaporatorium brown; peritreme reaching half the width of evaporatorium. Legs yellowish, slightly contrasting with body color, without brown circular spots.

Segments of connexivum bearing middle yellowish spot. Abdomen ventrally with punctures denser on lateral third and absent on disc. Yellowish maculae before spiracles present.

Female. Measurements (n=3): head length, 1.15 ± 0.06 (1.09–1.21); width, 1.81 ± 0.06 (1.74–1.86); pronotum length, 1.82 ± 0.15 (1.71–1.98); width, 4.00 ± 0.22 (3.75–4.19); scutellum length, 2.95 ± 0.28 (2.64–3.16); width, 2.47 ± 0.14 (2.33–2.6); length of antennal segments: I, 0.52 ± 0.03 (0.50–0.55); II, 1.19 ± 0.19 (1.00–1.38); III, 0.95 ± 0.12 (0.81–1.03); IV, 1.35 ± 0.42 (0.88–1.63); length of rostrum segments: I, 0.92 ± 0.10 (0.80–1.00); II, 1.65 ± 0.13 (1.50–1.75); III, 1.15 ± 0.09 (1.10–1.25); IV, 1.10 ± 0.13 (0.95–1.20); total length, 8.12 ± 0.63 (7.41–8.59); abdominal width, 4.53 ± 0.04 (4.50–4.56).

Genitalia. Gonocoxites 8 wider than long; posterior margins sinuous, middle projection over laterotergites 9 and posterolateral projection over laterotergites 8 equally extended; disc with low broad callus, uniformly tumid (fig. 8I). Laterotergites 8 as long as wide (fig. 8I). Gonocoxites 9 triangular, longitudinal suture absent (fig. 8I). Laterotergites 9 reaching the band connecting laterotergites 8; sutural angles not touching each other (fig. 8I). Thickening of vaginal intima subrectangular ( fig. 9G ). Ring sclerites placed close to the lateral limits of gonapophyses 9 ( fig. 9G ). Ductus receptaculi anterior to vesicular area wider than the intermediary duct; vesicular area at least three times longer than pars intermedialis plus capsula seminalis ( fig. 9G ). Length of the tubular portion of ductus receptaculi posterior to the vesicular area equals 1/3 the length of vesicular area ( fig. 9G ). Pars intermedialis cylindrical, at least twice longer than capsula seminalis, the latter bearing basal processes ( fig. 9G ).

Male. Unknown.

Comments. Xynocoris lucidus sp. nov. ( fig. 3C ) is part of the apical polytomy within the ‘clade Q’ ( fig. 1 ; Garbelotto et al. 2013, ‘sp. 03’). Diagnostic characters of Xynocoris lucidus are the lighter general color, the obtuse anteocular processes, the legs without brown spots, and the gonocoxites 8 wider than long and uniformly tumid (fig. 8I).

Figures

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

FIGURE 3. Xynocoris, dorsal: A, X. meridionalis sp. nov. (male holotype); B, X. cupreus sp. nov. (female holotype); C, X. lucidus sp. nov. (female holotype); D, X. crinitus 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.