Stysiana acarinatis Grazia, Fernandes & Schwertner, 1999

Figs 4, 8, 12, 23, 26, 143, 147–159, 184

Stysiana acarinatis Grazia, Fernandes & Schwertner, 1999: 76–78, figs 2, 5, 9, 13, 17, 21, 24, 27, 30, 34; Barão et al. 2017: 110; Coscarón, 2017: 232; Silva et al. 2018: 427.

Type material examined. Holotype ♂, PARAGUAY, Asunción, [Asunción], 15.I.1983, E.G. Riley leg. (USNM) <illustrated specimen >. Paratypes: PARAGUAY, 2♂ 1♀, Asunción, [Asunción], 15.I.1983, E.G. Riley leg. (MLPA); ARGENTINA, ♀, Corrientes, I.1921, De Carlo leg. (MLPA); ♀, Misiones, [Loreto], IX.1935, Berg leg. (MLPA) ; ♂, (UFRG); ♂, X.1935, no data. (MLPA) .

Other material examined. BRAZIL, ♂, Paraná, Londrina, 31.XII.1997, Clarice leg. (UFRG) <new record >; PARAGUAY, ♀, Asunción, [Asunción], 15.I.1983, E.G. Riley leg.

Diagnosis. Mesosternum slightly elevate (Fig. 150). Median furrow of the peritreme short, reaching less than half of peritreme (Figs 23, 26). Spiracles dark-brown.

Measurements. See Table 1.

Male genitalia. Genital cup occupying more than half of pygophore length. Middle region of dorsal rim notched (Figs 151–153). Phallus (Figs 154–157): Dorsal connectives longer, surpassing the distal half of phallotheca. Dorsal processes of phallotheca wider basally. Conjunctiva with a pair of process, acute apically (Fig. 157).

Female genitalia. Anterior margins of valvifers 9 straight. Posterior margins of laterotergites 8 straight (Fig. 158). Proximal ductus receptaculi with greater diameter than the ductus inside vesicular area. Annular flanges convergent (Fig. 159).

Distribution. Brazil (Paraná <new record>); Argentina (Corrientes, and Misiones); Paraguay (Asunción) (Fig. 184).