Pedinonotus Fernandes & Grazia, 2002

Barros, Lurdiana D., Barão, Kim R. & Grazia, Jocelia, 2021, Taxonomic updates on the Mecocephala group (Hemiptera: Pentatomidae) Redescription of ‘ Hypatropis complex’, with a review of genitalic terminology and new records, Zootaxa 4981 (1), pp. 1-46 : 34-36

Pedinonotus Fernandes & Grazia, 2002

Pedinonotus Fernandes & Grazia, 2002: 1–7 ; Frey-da-Silva et al. 2002: 181; Barão et al. 2017: 110; Barros et al. 2020a: 1064– 1065; Barros et al. 2020b: 321–322, 351, 354–355.

Type species. Pedinonotus catarinensis Fernandes & Grazia, 2002 by monotypy.

Diagnosis. Mesosternum carinate, metasternum grooved. Anterolateral margins of evaporatorium tapered. Apex of each radial vein smooth. Genital cup of pygophore broad, occupying more than half the length of pygophore. Area between layers of ventral rim separated by a carina. Superior layer of ventral of pygophore with two pairs of processes. Parameres present, with the crown reduced. Ductus seminis distalis long. Proximal ductus receptaculi twisted, short in relation to length of vesicular area, and greater diameter.

Redescription. Body oblong ( Figs 185–186 ). General coloration grayish-brown to dark-brown. Dorsal surface of body flattened dorsoventrally ( Fig. 187 ). Dorsal surface of body with dense and ferruginous punctures, ventrally, more concentrated. Mandibular plates longer than clypeus; lateral margins of mandibular plates sinuous; mesial margins of mandibular plates not contiguous in relation to the clypeus ( Fig. 188 ). Clypeus narrower basally. Antennomere 2 smaller than 1; antennomere 3 cylindrical and dorsally convex; antennomere 4 cylindrical, convex dorsally. Bucculae tapering toward base of head, not reaching its base ( Fig. 189 ). Labiomere 2 cylindrical and smaller than 3 and 4 combined ( Fig. 190 ). Anterolateral margins of pronotum convex, with outline concolour to pronotum and evenly punctate. Posterolateral margins of pronotum sinuous. Posterior margin of pronotum rectilinear ( Figs 185, 188 ). Mesosternum carinate, metasternum grooved. Each ostiole of ESES guttiform; periostiolar depressions present ( Figs 191–193 ). Apex of radial vein smooth ( Fig. 185 ). Membranal suture sub-rectilinear. Connexivum exposed, angles concolour to dorsal color. Spiracles elliptical, dark brown ( Figs 186–187 ). Trichobothria laterally to the imaginary line tangent to the spiracles.

Male genitalia. Pygophore subquadrangular, as wide as long. Area between layers of ventral rim of pygophore carinate ( Fig. 197 , black arrow). Segment X ogival, with carina, and tumescent processes at the base. Parameres present, crown reduced ( Figs 194–197 ).

Female genitalia. Valvifers 8 convex. Each lateral margins of valvifers 9 with process, not covering the laterotergites 9. Laterotergites 9 not surpassing abdominal tergite 8 ( Fig. 201 ).

Distribution. Brazil (Santa Catarina) ( Fig. 184 ).

Comments. Barros, Brugnera & Grazia ( Barros et al. 2020a) describe the monotypic genus Prolatucoris, and related to Hypatropis and Pedinonotus by elongated body and dorsal facies. Prolatucoris species shares with Pedinonotus species the mandibular plates longer than clypeus and the configuration of female genitalia.

Pedinonotus catarinensis and Prolatucoris mandibulatus Barros, Brugnera & Grazia share a similar facies ( Figs 203–204 ), length of labium similar ( Figs 205–206 ) and internal female genitalia (shape and size of thickening of vaginal intima, and diameter and length of proximal ductus receptaculi) ( Figs 211–212 ). Can be distinguished mainly by morphology of pygophore: presence of processes on projections of superior layer of ventral rim ( Figs 207, 208 ), carina separated the layers of ventral rim and area between layers of ventral rim strongly excavated and covered with setae ( Figs 209, 210 ), and morphology of phallus. The comparison of these genera is presented in Figures 203–212 .

Figures

FIGURE 184. Occurrence records of the species of Stysiana, Luridocimex and Pedinonotus.

FIGURES 185–193. Pedinonotus catarinensis Fernandes & Grazia, 2002. 185–187: Holotype, habitus dorsal, ventral and lateral; 188–190: Head in dorsal, lateral and ventral view; 191–193: SEM images of external scent efferent system of metasternal glands. 191: evaporatorium; 192–193: detail of evaporatorium. Scale bars: 185–187: 1.0 mm; 188–190: 0.5 mm; 191: 500 μm, 192–193: 100 μm.

FIGURES 194–202. Pedinonotus catarinensis Fernandes & Grazia, 2002. 194–197: Pygophore in dorsal, posterior and ventral view; 198–200: Phallus in dorsal, lateral, ventral and posterolateral view; 201: Genital plates in posteroventral view; 202: Female receptaculum seminis and aussenwand. Abbreviations: par, paramere; pslvr, process of superior layer of ventral rim. Scale bars: 194–197: 1.0 mm; 198–200: 0.25 mm; 201–202: 0.5 mm. (Left paramere and segment X not showing).

FIGURES 203–212. Comparative figure of Pedinonotus catarinensis and Prolatucoris mandibulatus. Habitus dorsal: 203: P. catarinensis, 204: P. mandibulatus. Head and pronotum, ventral view: 205, P. catarinensis, 206, P. mandibulatus. Male genitalia pygophore in dorsal and posterior view: 207–208: P. catarinensis, 209–210: P. mandibulatus. Female genitalia: 211: P. catarinensis, 212: P. mandibulatus. Scale bars: 203–204; 207–208: 1.0 mm; 205–206, 211–212: 0.5 mm; 209–210: 0.2 mm.