Exogonia semivitta (Walker, 1851)

Mauro-Barr, T. T., Carvalho, R. A., Felix, M. & Mejdalani, G., 2009, Taxonomy of the Neotropical leafhopper genus Exogonia with description of seven new Brazilian species (Hemiptera: Cicadellidae: Cicadellini), Zootaxa 2046 (1), pp. 43-68 : 64-65

Exogonia semivitta (Walker, 1851)

Length: male, 9.4 mm; female, 11.0 mm.

External morphology. Head, in dorsal view, moderately produced anteriorly, anterior margin rounded; crown with median length 1/2 interocular width and 1/3 transocular width; epicranial, temporal, and frontogenal sutures distinct. Pronotum, in dorsal view, with width as large as transocular width. Forewings with membrane on apical cells.

Color. Ground color of dorsum yellow. Crown with brown to dark brown transverse macula in front of ocelli from which a few lines extend over disc and pair of stripes extend onto frons; other small marks may be present on crown. Pronotum with pair of anterior triangular maculae and stripe bordering posterior margin, dark brown. Mesonotum with two dark brown triangular marks laterobasally and small brown maculae near apex. Forewings with three longitudinal narrow stripes, two on corium (one along costal margin and other beside claval suture) and one on clavus (near inner margin), and with semicircular mark on corium near claval apex, brown (in the single female studied, the stripes and mark are inconspicuous or absent); membrane brown. Face yellow; frons may present broad median yellow area bordered by brownish-yellow; some small brown marks may be present on face. Venter and legs yellow.

Male genitalia. Pygofer, in lateral view, with macrosetae on dorsal and ventral regions of apical portion and extending anteriorly along ventral margin; apical portion with inner ventral small process bearing numerous setae. Subgenital plates, in ventral view, narrowing gradually toward apex; with macrosetae near outer margin and small setae near dorsal margin and apex; in dorsolateral view, with two small triangular projections dorsobasally. Styles, in dorsal view, extending posteriorly beyond apex of connective; with distinct outer median lobe; portion beyond lobe curved, with few setae; apex truncate. Connective, in dorsal view, Y-shaped; stalk with broad median keel. Aedeagus, in lateral view, with shaft slightly directed ventrally; apical portion expanded and with dorsal lobe; median portion of shaft expanded in dorsal view. Paraphyses, in dorsal view, with pairs of rami of similar length; pair directed anteriorly narrowing toward apex and posterior one Y-shaped, more sclerotized than anterior pair; stalk as long as rami. Anal tube (segment X), in ventral view, with pair of apical areas on ventral margin with numerous setae similar to those of pygofer processes.

Female genitalia. Sternite VII, in ventral view, with lateral margins convex medially; posterior margin deeply concave medially; ventral surface with few longitudinal median striae near posterior margin. Pygofer similar to that of E. flavomaculata but with most macrosetae clustered apically and few setae near ventral margin. Second valvulae, in lateral view, without teeth on apical fourth; teeth varying from rounded and subtriangular to irregular; denticles on teeth. Other features of second valvulae as in E. flavomaculata .

Material examined. Brazil, Rio de Janeiro State. One male and one female , “ Distrito Federal [Rio de Janeiro Municipality]\ Repr.[Represa] dos Ciganos\ 19. 11. 54[1954]\ Newton Santos\ col. 335” ( MNRJ) .