Chinavia napaea (Stål), Stal

Genevcius, Bruno C., Grazia, Jocelia & Schwertner, Cristiano F., 2012, Cladistic analysis and revision of the obstinata group, genus Chinavia Orian (Hemiptera: Pentatomidae), Zootaxa 3434, pp. 1-30 : 28

Chinavia napaea (Stål)

( Figs. 1 , 12b , 25c and 29 ; Tables 1 , 2 and 4 )

Nezara napaea Stål, 1872: 42 .

Nezara napaea ; Lethierry & Severin, 1893: 166.

Nezara (Acrosternum) napaea ; Kirkaldy, 1909: 120.

Acrosternum (Chinavia) napaeum ; Rolston, 1983: 106; Frey-da-Silva & Grazia, 2001: 109 –110. Chinavia napea [sic]; Schwertner & Grazia, 2006: 243.

Chinavia napaea ; Schwertner & Grazia, 2007: 422 , 430.

Diagnosis. Species known for its dark-green coloration, without black spots on cicatrices, scutellum, and connexivum ( Fig. 29 ). As in C. difficilis , the spiracles are dark and the medial spine of third urosternite never surpasses the mesocoxae; these characters distinguish C. difficilis and C. napaea from C. obstinata . Antennal segments II to V black, a broad submarginal dorsal depression along the anterolateral margins of pronotum. Scutellum tapering at apex.

Coloration. Body entirely green, except for antennal segments II to V black.

Head. Margins of juga with a moderate concavity in front of eyes, apex of head semielliptical. Proportion of antennal segments: I<II<III<IV≈V. Rostrum always reaching mesocoxae. Proportion of rostrum segments: I≈II>III>IV.

Thorax. Anterolateral margins of pronotum with submarginal dorsal depression ( Fig. 29 ). Humeral angles obtuse. Hemelytra with costal angles of corium truncate. Sutural membrane slightly curved. Scutellum tapering at apex.

Abdomen. Medial spine of third urosternite reaching and sometimes surpassing mesocoxae. Spiracles black.

Male genitalia unknown.

Female genitalia ( Fig. 25c ). Gonocoxites 8 strongly convex with excavations on the posterior margin.

Distribution. Brazil: Rio de Janeiro.

Material examined.

Holotype. BRASIL: no data of origin. (♀, NRM)

Additional material. BRAZIL: Rio de Janeiro, Parque do Museu , 8.VII.1912, E. Moreira (1♀, MNRJ); Parque do Museu , 17.V.1912, Balou (1♀, MNRJ).

Figures

FIGURE 1. Distribution of obstinata group. Green, Chinavia difficilis; red, C. obstinata; yellow, C. napaea. Dark gray, Brazilian Atlantic Forest; light gray, Pampa biome.

FIGURE 12. Shape of gonocoxites 8 (gc8): flat in C. difficilis (a), convex in C. napaea (b).

FIGURE 25. Ventral view of female genitalia: C. obstinata (a), C. difficilis (b) and C. napaea (c), showing gonocoxites 8 and 9 (gc8 and gc9), laterotergites 8 and 9 (la8 and la9), segment X (X), sutural angles (sa) and excavations (ex) on the posterior margins of gonocoxites 8 of C. napaea (c).

FIGURE 29. Dorsal and ventral view of C. napaea (Holotype, ♀).