Paropsocolis Sampaio & Campos, 2023

Sampaio, Vinícius Gomes & Campos, Luiz Alexandre, 2023, Paropsocolis, a new pentatomid genus with two new species from Brazil (Heteroptera, Pentatomidae, Ochlerini), Zootaxa 5323 (4), pp. 553-566 : 556

Paropsocolis Sampaio & Campos , gen. nov.

Etymology. The name refers to the dish-shaped process of the parameres. Greek: paropsis, dessert-dish; Latin: colis, male genitalia. Masculine.

Type species. Paropsocolis convergens Sampaio & Campos , sp. nov. ( Figs. 3–24 )

Diagnosis. Labial intercalary segment inconspicuous; basal angles of scutellum callous; anterior 1/3 of metasternum carinated; femora unarmed; urosternite III without anterior tubercle; distal half of the male segment X trapezoid and lined laterally with dense setae; head of parameres with a basal dish-shaped process, and a bifurcated apex; phallus globose; theca with one apical ventral process; endosoma with one dorsal and one ventral processes; laterotergites IX partially covering segment X; apex of laterotergites IX surpassing the mediotergite VIII; thickening of vaginal intima circular.

Description. Body oval elongated. Head wider than long, longitudinally convex; mandibular plates slightly longer than clypeus, with sinuous lateral margins, and rounded at apex; ocelli large, about ¼ of the eye width, and placed behind the line connecting the posterior margin of eyes; eyes contiguous to anterior margin of pronotum; antennae with sparse setae, antenomere I slightly surpassing mandibular plates, proportion of antennomeres: I≅II<III<V<V. Bucculae elevated, truncated anteriorly and evanescent posteriorly; Labium with an inconspicuous intercalary segment between labiomeres I e II, proportion of labiomeres: I<II>III>IV; labiomere I inserted anteriorly to the midline of bucculae, and exceeding the bucculae posteriorly.

Thorax. Pronotum trapezoidal, twice as wide as long, with a denticle at the anterolateral angles; humeral angles emarginate, rounded. Scutellum longer than wide; basal angles callous; frenal constriction width half the basal width. Coria with spot at apex of the radial vein; posterior margin sinuous. Mesopleural evaporatoria occupying a uniformly wide area parallel to the posterior mesopleural margin, as wide as the mesocoxal suture, and not attaining the lateral pleural margin except at the anterolateral mesopleural angle; metapleural evaporatoria surrounding the peritremal disc, occupying more than two thirds of the metapleural width, and with the outer margin almost straight; ostiole laterally oriented; peritremal disc tapering to the apex. Prosternum shallowly concave; mesosternum carinated; metasternum hexagonal, carinated. Femora unarmed; tibiae with dorsal surface shallowly sulcated and with dense setae at the distal ventral half; dorsal surface of third tarsomere of females flat.

Abdomen. Connexival segments IV to VII exposed, finely and irregularly punctured; posterior angles of urosternites acute; trichobothria lateral to spiracles.

Male. Genitalia. Pygophore globose; posterolateral angles dorsally depressed, lateral margins tumescent, apices rounded and posteriorly projected. Dorsal rim concave over segment X, and with one subtriangular projection on each side of segment X; ventral rim concave on middle; segment X not exceeding the ventral rim, subrectangular on basal half, trapezoidal and lined laterally with dense setae on distal half; head of parameres with a basal dish-shaped process, and a bifurcated apex. Phallus globose; theca with one apical ventral process, curved dorsally and bilobed at apex; apical margin of theca projected as flaps lateral to endosoma; endosoma with one ventral process accompanying the ductus seminis distalis, and one dorsal process curved ventrally and bilobed at apex.

Female. Genitalia. Valvifers VIII as wide as long, subtriangular, covering the base of laterotergites VIII almost reaching the spiracle; laterotergites VIII subtriangular; exposed portion of valvifers IX trapezoidal, wider than long; laterotergites IX surpassing the mediotergite VIII, separate on the middle line, partially covering the segment X; segment X rectangular, longer than wide; valvulae IX with secondary thickenings and ring sclerites; thickening of vaginal intima circular.

Comments. Paropsocolis Sampaio & Campos , gen. n. differs from all genera in the Janeirona clade by the shape and length of the mandibular plates, the proportion of antennomeres, the inconspicuous labial intercalary segment, the metasternal carina, and the genital morphology. Besides that, Paropsocolis differs from Neoadoxplatys by the peritremal shape, the unarmed femora, and the shorter labium; from Adoxoplatys by the larger size, the oval body, and the peritremal shape; and from Janeirona by the the paler color and the spiraled posterior portion of ductus receptaculi.

Distribution: Brazil ( Fig. 2 ).

Figures

FIGURE 2. Geographic distribution of Paropsocolis Sampaio & Campos, gen. nov..

FIGURES 3–6. Paropsocolis convergens Sampaio & Campos, sp. nov., male holotype, 3, dorsal; 4, ventral; 5, lateral; 6, label. Scale bar = 5 mm.

FIGURES 7–9. Paropsocolis convergens Sampaio & Campos, sp. nov., male holotype, 7, head and pronotum; 8, labial intercalary segment (bracket); 9, external scent efferent system. Scale bars: 7 = 5 mm; 8, 9 = 1 mm.

FIGURES 10–15. Paropsocolis convergens Sampaio & Campos, sp. nov., male, pygophore, 10, dorsal; 11, dorsoposterior; 12, dorsolateral; 13, posterior; 14, lateral; 15, ventral. Scale bar 0.5 mm.

FIGURES 16–20. Paropsocolis convergens Sampaio & Campos, sp. nov., male, 16, phallus (lateral); 17, dorsal process of endosoma; 18–20, right paramere in dorsal, lateral, and medial views, respectively. Abbreviations: dpe = dorsal process of endosoma; th = theca; vpe = ventral process of endosoma; vpt = ventral process of theca; vtt = ventral tubercle of theca. Scale bars = 0.5 mm.

FIGURES 21–24. Paropsocolis convergens Sampaio & Campos, sp. nov., female, 21, genital plates; 22, internal genitalia; 23, distal portion of ductus receptaculi, pars intermedialis, and capsula seminalis; 24, valvulae IX and vaginal intima.Abbreviations: cs = capsula seminalis; drd = distal portion of ductus receptaculi; drp = proximal portion of ductus receptaculi; laVIII = laterotergites VIII; laIX = laterotergites IX; pi = pars intermedialis; rs = ring sclerites; tgIX = secondary thickenings of valvulae IX; tgvi = thickening of vaginal intima; vfVIII = valvifers VIII; vfIX = valvifers IX; vlIX = valvulae IX; X = segment X. Scale bars: 21 = 1 mm; 22 = 2 mm; 23, 24 = 0.5 mm.