Stysiana pardidens Grazia, Fernandes & Schwertner, 1999

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 : 32-33

Stysiana pardidens Grazia, Fernandes & Schwertner, 1999

Figs 19–20 , 36–38 , 51 , 145 , 166–170 , 184

Stysiana pardidens Grazia, Fernandes & Schwertner, 1999: 80–81 , figs 1, 7, 11, 15, 19, 22, 25, 28, 32, 36.

Type material examined. Holotype ♂, PERU, [Satipo], San Ramon de Pangoa , 40 km SE, 24.IV.1972, R.T & J.C. Schuh leg. ( AMNH) <illustrated specimen> . Paratypes: BRAZIL, ♀, [Minas Gerais], Viçosa ( UFRG) . ♀, Rio de Janeiro, Parati, Pedra Branca , 9.XII.1941, Berla leg. ( UFRG) . ♂, Santa Catarina, Nova Teutônia , I.1976, Fritz Plaumann leg. ( UFRG) <illustrated specimen>; ♀, X.1975, Fritz Plaumann leg. ( UFRG) <illustrated specimen>.

Diagnosis. Mesial margins of mandibular plates apically convergent ( Fig. 168 ). Labiomere 2 sub equal to labiomeres 3 and 4 combined ( Fig. 19 ). Mesosternum carinate. Median furrow of the peritreme long, reaching more than half of peritreme. Gyrification of evaporatorium with high wrinkles ( Fig. 169 ). Anterolateral angles of sternites dark-brown. Sub lateral margins of sternites dark-brown ( Figs 20 , 167 ). Spiracles dark-brown ( Fig. 20 ).

Measurements. See Table 1 .

Male genitalia. Genital cup occupying more than half of pygophore length. Middle region of dorsal rim notched ( Figs 36–38 ). Phallus: Dorsal connectives longer, surpassing the distal half of phallotheca. Dorsal processes of phallotheca medially narrow. Conjunctiva with two pairs of processes, 1+1 acute, and 1+1 sub truncate apically (see Grazia, Fernandes & Schwertner, 1999: 79, figs 23, 26, 29).

Female genitalia. Anterior margins of valvifers 9 concave. Posterior margins of laterotergites 8 straight ( Figs 38 , 166 ). Proximal ductus receptaculi with equal diameter than the ductus inside vesicular area. Annular flanges divergent (see Grazia, Fernandes & Schwertner, 1999: 81, fig. 36).

Distribution. Colombia; Guyana; Brazil (Minas Gerais, Rio de Janeiro, and Santa Catarina); Peru ( Fig. 184 ).

Figures

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

FIGURES 13–20. Head and pronotum in ventral view and habitus lateral. 13: Hypatropis inermis; 14: Hypatropis rolstoni; 15–16: Amauromelpia ussu; 17–18: Luridocimex wygodzinskyi; 19–20: Stysiana pardidens. Scale bars = 0.5 mm.

FIGURES 27–38. Male genitalia. Pygophore in dorsal, posterior and ventral view, respectively. 27–29: Hypatropis inermis; 30–32: Amauromelpia ussu; 33–35: Luridocimex wygodzinskyi: 36-38: Stysiana pardidens. Abbreviations: dr, dorsal rim; ilvr, inferior layer of ventral rim; slvr, superior layer of ventral rim; spp, superior process of pygophore; vr, ventral rim. Scale bars = 0.5 mm.

FIGURES 48–51. Female genitalia. Genital plates in posteroventral view. 48: Hypatropis australis; 49: Amauromelpia miri; 50: Luridocimex wygodzinskyi: 51: Stysiana pardidens. Abbreviations: la8, laterotergites 8; la9, laterotergites 9; vf8, valvifers 8; vf9, valvifers 9. Scale bars = 0.5 mm.

FIGURES 143–146. Stysiana Grazia, Fernandes & Schwertner, 1999. Holotype, habitus dorsal. 143: S. acarinatis; 144: S. meridionalis; 145: S. pardidens; 146: S. tropicalis. Scale bars = 1.0 mm.

FIGURES 166–170. Stysiana pardidens Grazia, Fernandes & Schwertner, 1999. 166–167: Habitus dorsal and ventral; 168: Head in dorsal view; 169: Evaporatorium; 170: Female receptaculum seminis and aussenwand. Abbreviations: st, secondary thickenings of valvulae 9. Scale bars = 166–167, 170: 1.0 mm; 168–169: 0.5 mm. Ductus not preserved.