Stysiana meridionalis 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 : 29

Stysiana meridionalis Grazia, Fernandes & Schwertner, 1999

Figs 54 , 144 , 160–165 , 184

Stysiana meridionalis Grazia, Fernandes & Schwertner, 1999: 78–79 , figs 3, 6, 10, 14, 18, 31, 35; Ruschel et al. 2013: 559 , fig. 3e; Coscarón, 2017: 232.

Type material examined. Holotype ♂, BRAZIL, Santa Catarina, [Florianópolis], Morro das Pedras , 22.I.1957, Pe. Buck leg. ( MCNZ) <illustrated specimen >. Paratypes: ARGENTINA, ♀, [Buenos Aires], Buenos Aires, J.B. Daguerre leg. ( MACN) <illustrated specimen>; ♂ ( UFRG) <illustrated specimen >.

Diagnosis. Mesial margins of mandibular plates apically divergent. Mesosternum carinate. Median furrow of the peritreme long, reaching more than half of peritreme. Gyrification of evaporatorium with low wrinkles ( Fig. 162 ). Anterolateral angles of sternites dark-brown. Spiracles dark-brown ( Figs 161, 163 ).

Measurements. See Table 1 .

Male genitalia. Genital cup occupying less than half of pygophore length. Middle region of dorsal rim entire (see Grazia, Fernandes & Schwertner, 1998: 75–78, figs 6, 10, 14, 18).

Female genitalia. Anterior margins of valvifers 9 straight. Posterior margins of laterotergites 8 obtusely projected ( Fig. 164 ). Proximal ductus receptaculi with greater diameter than the ductus inside vesicular area. Annular flanges convergent related to each other ( Figs 54 , 165 ).

Distribution. Brazil (Santa Catarina); Argentina (Buenos Aires) ( Fig. 184 ).

Figures

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

FIGURES 52–54. Female receptaculum seminis and aussenwand. 52, Hypatropis inermis; 53, Amauromelpia ussu; 54, Stysiana meridionalis. Abbreviations: aaf, anterior annular flange; cs, capsula seminalis; ddr, distal ductus receptaculi; paf, posterior annular flange; pdr, proximal ductus receptaculi; pi, pars intermedialis; la9, laterotergites 9; rs, ring sclerite; tvi, thickening of vaginal intima; va, vesicular area; va9, valvulae 9; vf9, valvifers 9; X, abdominal segment X. Scale bars = 52, 54: 0.5 mm; 53, 1.0 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 160–165. Stysiana meridionalis Grazia, Fernandes & Schwertner, 1999. 160–161: Habitus dorsal and ventral; 162: Evaporatorium; 163: Spiracles; 164: Genital plates in posteroventral view; 165: Female receptaculum seminis and aussenwand. Abbreviations: ev, evaporatorium; st, secondary thickenings of valvulae 9; va, vesicular area. Scale bars = 160–161, 163: 1.0 mm; 162, 164–165: 0.5 mm. Ductus not preserved.