Xynocoris calosus 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 : 299-301

Xynocoris calosus Garbelotto & Campos sp. nov.

( figs. 2F ; 5G, J ; 6D, H, L ; 7M–P ; 8F; 9 E)

Etymology. The epithet refers to the callus on gonocoxites 8; greek: kalus, beautiful, beauty. Type-locality. Bolivia, Buena Vista (-17.4833; -63.5500).

Male Holotype. BOLIVIA, Santa Cruz: Buena Vista (Hotel Flora & Fauna), 14–26.XI.2003, Morris, Nearns & Wappes, [-17.4833; -63.5500] (JEE) Deposited in: AMNH .

Paratypes. BOLIVIA, Santa Cruz: Buena Vista (3.7km SSE, Hotel Flora & Fauna, 405m), 6 females e 1 male, 5–15.XI.2001, M. C. Thomas & B. K. Dozier, [-17.4833; -63.5500], tropical transition forest, ( FSCA) Deposited in: 3♀ and 1♂ — FSCA, 3♀ — AMNH ; ( Hotel Flora & Fauna ), 1 male, 14–26.XI.2003, Morris, Nearns & Wappes, [- 17.4833; -63.5500] ( JEE) Deposited in: USNM ; (5km SSE, Hotel Flora & Fauna, 440m), 2 females e 1 male, 18–22.X.2004, J. E. Eger, R. F. Morris & J. E. Wappes, [-17.4833; -63.6500], at UV, MV and incandescent lights ( JEE) Deposited in: 1♀ and 1♂ — AMNH, 1♀ — USNM ; (3.7km SSE, Hotel Flora & Fauna, 430m), 2 females, 15.IX.2001, M. C. Thomas & B. K. Dozier, [-17.4833; -63.5500], tropical transition Forest, BLT ( JEE) Deposited in: USNM .

Description. Body oval, dark brown to black; punctures black; yellowish spots on anterior margin of pronotum and exocorium. Legs light brown, contrasting with body. Abdomen pubescent ventrally. Antennae five-segmented, third segment of males little widened.

Head black with yellowish spots on mandibular plates, clypeus and vertex; punctures forming wrinkles between base of mandibular plates and posterior margin of head. Apices of mandibular plates juxtaposed, exceeding clypeus by twice the ocellar diameter; lateral margins of mandibular plates slightly reflected. Eyes on short peduncle. Anteocular process projected, attaining half the width of eye. Antennal tubercle covered 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 shallow wrinkles posterior to cicatrices; few yellowish spots on anterolateral margins; cicatrices slightly tumid. Anterior angles of pronotum with projections lateral to posterior margins of eyes, exceeding laterally the eye by the eye diameter. Anterolateral margins slightly concave, reflected, the anterior half laterally expanded; posterolateral margins slightly sinuous. Scutellum with yellowish spots evenly distributed; anterior margin with median spot and 1+1 yellowish spots near the fovea, sometimes inconspicuous; punctures forming wrinkles, denser on lateral margins and inconspicuous on apex. Corium reaching middle of connexival segment VI; spot on apex of radial vein equals twice the ocellar diameter. Hemelytral membrane reaching or little surpassing the apex of abdomen, bearing nine veins, sometimes bifurcate on apex. Pleurae with yellowish spots. Evaporatorium dark brown; peritreme reaching half the width of evaporatorium. Legs light brown, contrasting with body color; femora and tibiae with brown circular spots.

Segments of connexivum bearing middle yellowish spot. Abdomen pubescent ventrally; disc without punctures and yellowish spots. Yellowish maculae before spiracles present (fig. 8F). Male. Third antennal segment 1/3 wider than fourth segment. Measurements (n=4): head length, 1.71 ± 0.02 (1.70–1.75); width, 2.09 ± 0.05 (2.05–2.15); pronotum length, 2.10 ± 0.12 (2.00–2.25); width, 5.21 ± 0.24 (5.00–5.55); scutellum length, 3.43 ± 0.20 (3.25–3.70); width, 2.95 ± 0.16 (2.80–3.15); length of antennal segments: I, 0.65 ± 0 (0.65–0.65); II, 0.54 ± 0.05 (0.50–0.60); III, 1.04 ± 0.05 (1.00–1.10); IV, 0.99 ± 0.06 (0.90–1.05); V, 1.55 ± 0.07 (1.45–1.60); length of rostrum segments: I, 0.93 ± 0.05 (0.85–0.95); II, 1.54 ± 0.05 (1.50–1.60); III, 1.03 ± 0.06 (0.95–1.10); IV, 0.94 ± 0.03 (0.90–0.95); total length, 7.99 ± 0.21 (7.81–8.24); abdominal width, 5.09 ± 0.20 (4.90–5.33).

Genitalia. Pygophore. Dorsal rim concave, distance between projections of dorsal rim equals 1.5 times the width of each projection; anterior projections bearing tuft of short setae ( fig. 5G ). Projections of inferior layer of ventral rim subtriangular, apex spatulate placed laterally to segment X (fig, 5G). Median third of ventral rim slightly emarginated forming a shallow, narrow aperture covering the lateral portions of segment X ( fig. 5J ). Carinae continued from the conical projection of inferior layer inconspicuous ( fig. 5J ). Segment X wider at base, with an inconspicuous boundary between sclerotized and membranous areas; lateral margins slightly sinuous; apex bearing short setae ( fig. 5G ). Parameres with apical angle rounded ( fig. 6D, H, L ); head not reaching the margin of ventral opening of pygophore ( fig. 5J ). Phallus: lateral projection of phallotheca reaching the dorsal margin ( fig. 7P ). Dorsal process of vesica bilobed ( fig. 7M, O, P ). Ductus seminis distalis twisted, robust and strongly sclerotized; apical gutter deep ( fig. 7M–P ).

Female. Measurements (n=10): head length, 1.65 ± 0.08 (1.55–1.75); width, 2.10 ± 0.06 (2.00–2.20); pronotum length, 2.17 ± 0.08 (2.05–2.30); width, 5.15 ± 0.23 (4.85–5.70); scutellum length, 3.56 ± 0.14 (3.30–3.80); width, 2.97 ± 0.13 (2.75–3.25); length of antennal segments: I, 0.66 ± 0.02 (0.65–0.70); II, 0.59 ± 0.03 (0.55–0.65); III, 0.93 ± 0.06 (0.85–1.00); IV, 0.99 ± 0.03 (0.95–1.05); V, 1.60 ± 0.05 (1.50–1.70); length of rostrum segments: I, 0.96 ± 0.04 (0.90–1.00); II, 1.64 ± 0.07 (1.55–1.75); III, 1.06 ± 0.02 (1.05–1.10); IV, 0.96 ± 0.03 (0.90–1.00); total length, 8.32 ± 0.30 (7.88–8.95); abdominal width, 5.28 ± 0.28 (5.04–5.86).

Genitalia. Gonocoxites 8 longer than wide, posterior margin slightly sinuous and not projected posterolaterally over laterotergites 8, middle projection over laterotergites 9 convex; disc with conical callus on middle, near posterior margin (fig. 8F). Laterotergites 8 as long as wide; middle yellowish spot present in some specimens ( fig. 9F ). Gonocoxites 9 diamond-shaped; longitudinal suture conspicuous (fig. 8F). Laterotergites 9 reaching at most the band connecting laterotergites 8; sutural angles away from each other at the apical 1/4 (fig 8F). Thickening of vaginal intima subrectangular ( fig. 9 E—vi). Ring sclerites placed close to but not touching the lateral limits of the thickening of gonapophyses 9 ( fig. 9 E—rs, tg9). Ductus receptaculi anterior to vesicular area slightly wider than the intermediary duct (fig, 9E—dr, md). Vesicular area three times longer than pars intermedialis plus capsula seminalis ( fig. 9 E—pi, cs). Length of tubular portion of ductus receptaculi posterior to vesicular area equals half the length of vesicular area ( fig. 9E ). Pars intermedialis cylindrical, at least four times longer than capsula seminalis, the latter bearing apical processes ( fig. 9 E—pi, cs).

Comments. Xynocrois calosus sp. nov. ( fig. 2F ) is the sister group of clade ‘Q’ ( fig.1 ), which includes some species with four-segmented antennae ( Garbelotto et al. 2013, ‘sp. 14’). Diagnostic characters are the laterally expanded anterior half of the anterolateral margin of pronotum, the gonocoxites 8 bearing conical callus and without posterolateral projections over laterotergites 8 (fig. 8F).

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 5. Xynocoris, male genitalia: A–C and G–I, dorsal; D–F and J–L, ventral. A and D, X. parvus; B and E, X. tuberculatus sp. nov.; C and F, X. recavus sp. nov.; G and J, X. calosus sp. nov.; H and K, X. meridionalis sp. nov.; I and L, X. crinitus sp. nov. Abbreviations: cp, conical projection; dr, dorsal rim; pa, posterolateral angle; par, paramere; pil, projection of inferior layer of ventral rim; vr, ventral rim; X, segment X. Scale bars = 1 mm.

FIGURE 6. Xynocoris, right paramere: A–D, dorsal; E–H, ventral; I–L, lateral. A, E and I, X. parvus; B, F and J, X. tuberculatus sp. nov.; C, G and K, X. recavus sp. nov.; D, H and L, X. calosus sp. nov. Scale bar = 1 mm.

FIGURE 7. Xynocoris, phallus. A, E, I and M, dorsal; B, F, J and N, anterior; C, G, K and O, posterior; D, H, L and P, lateral. A–D, X. parvus; E–H, X. tuberculatus sp. nov.; I–L, X. recavus sp. nov.; M–P, X. calosus sp. nov. Abbreviations: dp, dorsal process of phallotheca; ds, ductus seminis distalis; lph, lateral projection of phallotheca; ph, phallotheca; v, vesica; vp, vesica process. Scale bar = 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.