Stysiana tropicalis 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 : 34

Stysiana tropicalis Grazia, Fernandes & Schwertner, 1999

Figs 146 , 171–183 , 184

Stysiana tropicalis Grazia, Fernandes & Schwertner, 1999: 82–81 , figs 4, 8, 12, 16, 20, 23, 26, 29, 33, 37; Silva et al. 2018: 433 .

Type material. Holotype ♂, BRAZIL, Maranhão, São Luís , 18.VI.1984, A. Brisolla leg. ( MZUSP) <illustrated specimen >. Paratypes: SURINAME, ♀, Paramaribo, [Paramaribo], 15.I.1958, P.H.v. Doesburg Jr. leg. ( RMNH) ; BRAZIL, ♀, Maranhão, São Luís , 5.V.1987, A. Brisolla leg. ( UFRG) <illustrated specimen> . ♀, Rondônia, Ouro Preto D’Oeste , 17.I.1985, A. Mendes leg. ( UFRG) <illustrated specimen>.

Diagnosis. Mesial margins of mandibular plates apically convergent ( Fig. 173 ). Labiomere 2 larger than labiomeres 3 and 4 combined ( Fig. 174 ). Gyrification of evaporatorium with high wrinkles. Anterolateral angles of sternites dark-brown. Spiracles dark-brown. Mesial area adjacent to spiracles with callosity ( Fig. 172 ).

Measurements. See Table 1 .

Male genitalia. Genital cup occupying less than half of pygophore length. Middle region of dorsal rim entire ( Figs 175–177 ). Phallus ( Figs 178–181 ): Dorsal connectives shorter, not reaching the distal half of phallotheca. Dorsal processes of phallotheca medially narrow. Conjunctiva with two pairs of processes, acute apically ( Fig. 181 ).

Female genitalia. Anterior margins of valvifers 9 straight. Posterior margins of laterotergites 8 straight ( Figs 182–183 ). Proximal ductus receptaculi with equal diameter than the ductus inside vesicular area. Annular flanges divergent related to each other (see Grazia, Fernandes & Schwertner, 1999: 81, fig. 37).

Distribution. Trinidad and Tobago; Suriname; Brazil (Maranhão, Rondônia, and Espírito Santo) ( Fig. 184 ).

Figures

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

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 171–183. Stysiana tropicalis Grazia, Fernandes & Schwertner, 1999. 171–172: Habitus dorsal and ventral. 173: Head in dorsal view; 174: Mesosternum, red rectangle showing mesosternum carinate; 175–177: Pygophore in dorsal, posterior and ventral view; 178–181: Phallus in dorsal, lateral, ventral and posterolateral view; 182: Genital plates in posteroventral view; 183: Female receptaculum seminis and aussenwand. Abbreviations: st, secondary thickenings of valvulae 9. Scale bars = 171–172, 175–177: 1.0 mm; 173–174, 182–183: 0.5 mm; 178–181: 0.25 mm. Ductus not preserved.