Xynocoris crinitus 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 : 287-293

Xynocoris crinitus Garbelotto & Campos sp. nov.

( figs. 3D ; 5I, L )

Etymology. The epithet refers to the long setae at the lateral margins of parameres; latin: crinitus , with long hair.

Type locality. Brazil, Jacare (-15.2667; -57.7000).

Male holotype. BRAZIL, Mato Grosso: Jacare (P. N. Xingu), XI.1961, Alvarenga, Werner, [-15.2667; - 57.7000] ( DCMP) Deposited in: DCMP .

Description. Body elongate; overall color dark brown, with lighter colored areas on pronotal and scutellar wrinkles, and between punctures on corium; punctures black. Legs slightly lighter colored than the body surface. Antennae four-segmented, segment II conspicuously wider in males.

Head black, punctures forming transverse wrinkles on mandibular plates and clypeus. Apices of mandibular plates exceeding clypeus by a distance equivalent to half of the ocellar diameter, not touching each other; lateral margins of mandibular plates slightly reflected. Eyes on short peduncle. Anteocular processes projected, attaining 1/2 of the eye width. Antennal tubercles partially visible from above. Antennae brown, four-segment; first segment bearing dorsal longitudinal yellowish spot; proportion of antennal segments: I<II>III<IV, second the longest. Ventrally with 1+1 carinae posterior to the eyes, concolours with head surface. Bucculae with anterior tooth. Rostrum yellowish, second segment reaching mesocoxae; apex not surpassing posterior margin of urostermite III; proportion of rostral segments: I<II>III≈IV.

Pronotum black anterior to cicatrices, brown with yellowish spots and punctures forming wrinkles posterior to cicatrices; cicatrices flat. Anterior angles of pronotum with projections lateral to the eyes, exceeding laterally the eye by almost the eye diameter. Anterolateral margins concave and crenulated; posterolateral margins subrectilinear. Scutellum brown with punctures forming wrinkles on disc; anterior margin with median spot and 1+1 light spots near the fovea; yellowish spots denser on postfrenal lobe. Corium reaching anterior margin of connexival segment VI; yellowish spots evenly distributed; spot on apex of radial vein equivalent to the ocellar diameter. Hemelytral membrane surpassing the apex of abdomen, bearing nine veins. Pleurae and sterna black. Evaporatorium black; peritreme surpassing half the width of evaporatorium. Legs yellowish contrasting with body color, except tibiae brown; femora with brown circular spots.

Segments of connexivum bearing yellowish middle spot. Abdomen dark brown, punctures shallow, absent on disc. Yellowish maculae before spiracles absent.

Male. Second antennal segment twice wider than third segment. Measurements (n=1): head length, 1.47; width, 2.45; pronotum length, 2.50; width, 6.03; scutellum length, 3.97; width, 3.19; length of antennal segments: I, 0.62; II, 2.14; III, 1.24; IV, 1.74; length of rostrum segments: I, 0.90; II, 1.55; III, 1.25; IV, 1.15; total length, 10.73; abdominal width, 6.37

Genitalia. Pygophore. Dorsal rim concave; distance between projections of dorsal rim equals the width of each projection ( fig. 5I ). Projections of inferior layer of ventral rim subtriangular, apices spatulate placed laterally to segment X ( fig. 5I ). Superior layer of ventral rim slightly tumid near the median margin of the projections of inferior layer ( fig. 5I ). Ventral rim uniformly excavated, forming a shallow and large aperture, exposing the lateral portions of segment X ( fig. 5L ). Carinae continued from the conical projection of inferior layer conspicuous ( fig. 5L ). Segment X slightly wider at base, with inconspicuous boundary between sclerotized and membranous areas; lateral margins concave; apex bearing short setae ( fig. 5I ). Parameres with apical angle not acutely curved; head not reaching the margin of ventral opening of pygophore; median lobe of lateral margin of parameres, in dorsal view, placed laterally to segment X and bearing long setae reaching the apex of posterolateral angles of pygophore ( fig. 5 L—par).

Female. Unknown.

Comments. Xynocoris crinitus sp. nov. ( fig. 3D ) is the most basal species of Xynocoris gen. nov. ( fig. 1 ; Garbelotto et al. 2013, ‘sp. 08’). Diagnostic characters of X. crinitus sp. nov. are the concolorous carinae posterior to each eye, the anterolateral margins of pronotum concave and crenulated, and the long setae of parameres reaching the posterolateral angles of pygophore ( fig. 5I ).

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 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.