Erythrogonia sexguttata (Fabricius, 1803)

Carvalho, Rachel A. & Mejdalani, Gabriel, 2014, Remarkable morphological features of taxonomic interest in the female genitalia of five Erythrogonia species (Hemiptera: Cicadomorpha: Cicadellidae), Zootaxa 3872 (3), pp. 275-290 : 286-287

Erythrogonia sexguttata (Fabricius, 1803)

( Figs 54–63 )

Length: female 7.3–7.4 mm (n = 2), male 6.4 mm (n = 1).

Diagnosis. Anterior dorsum ( Fig. 54 ) brown to reddish-brown with triangular, deeply incised yellow to pale yellow macula on crown contiguous to large, shallowly incised macula on pronotum. Forewings ( Fig. 54 ) reddishbrown with three large yellow to whitish-yellow spots bordered with brown, one on basal half of clavus adjacent to apex of mesonotum, one on median corium third adjacent to costal margin, and one on apical portion of clavus and adjacent area of corium; costal margin bordered with dark brown to black; membrane brown except for unpigmented anterior triangular area. Males with basal half of subgenital plate just a little broader than style; style almost as long as subgenital plate; aedeagus with shaft narrow, curved ventrally and then directed dorsally, apex acute; paraphyses basal portion T-shaped, rami with posterior ends strongly curved ventrally. Female sternite VII ( Fig. 56 ) with ventral surface longitudinally sulcate and posterior margin deeply incised medially; sternite VIII ( Figs 55 and 56 ) with two pairs of lateral sclerotized areas; first valvifers ( Figs 57–59 ) without processes or additional sclerites; second valvulae with three small, longitudinally-aligned sclerites between bases of rami ( Fig. 55 ).

Female genitalia. Sternite VII ( Fig. 56 ) with deep median incision on posterior margin; lateroposterior areas with very small projection; lateral margins convergent posteriorly; ventral surface with few irregular striae, without setae; median portion with pair of longitudinal elevations delimiting a deep sulcus ( Fig. 56 , MSC); internally with median area connected dorsally to sternite VIII. Sternite VIII ( Figs 55 and 56 ), in dorsal view, with two pairs of lateral sclerotized areas located externally to first valvifers. Pygofer moderately produced posteriorly; posterior margin narrowly rounded; macrosetae on posterior two-thirds. First valvifers ( Figs 57–59 ), in lateral view, large, subrectangular, without processes or additional sclerites; in dorsal view, convergent anteriorly and deeply concave internally ( Fig. 57 , ICO). First pair of valvulae ( Figs 57–60 ), in anterior view, with outer margin of basal portion enlarged, semicircular, bearing small lobiform projection; in lateral view, distinctly curved basally ( Fig. 60 , CBP), basal portion angulate in relation to remaining of blade; sculptured areas as in E. phoenicea and E. calva ; apex acute; ventral interlocking device as in E. phoenicea and E. calva . Second pair of valvulae ( Fig. 61 ) broadened beyond basal curvature, narrowing slightly towards narrowly rounded apex; ventral margin approximately rectilinear; preapical prominence inconspicuous ( Fig. 61 ); with approximately 25 teeth; teeth ( Figs 61 and 62 ), denticles ( Figs 62 and 63 ), and ducts ( Figs 62 and 63 ) as in E. phoenicea and E. calva ; dorsal and ventral dentate apical portions with about same size ( Fig. 63 ); valvulae with three small, longitudinally-aligned sclerites between bases of rami ( Fig. 55 ). Gonoplacs as in E. phoenicea and E. calva .

Distribution. Venezuela, Guiana, French Guiana, Brazil (states of Pará, Mato Grosso, Bahia, Goiás, Mato Grosso do Sul, and Rio de Janeiro), Peru, Bolivia, Argentina.

Material examined. Argentina: province of Salta: two males and one female ( DZRJ). Brazil: state of Bahia: two females ( MNRJ); state of Goiás: one female ( MNRJ).

Figures

FIGURES 54 – 59. Erythrogonia sexguttata (Fabricius). Female body (54) and genitalia (55 – 59): apex of abdomen in (55) dorsal and (56) ventral views; base of first valvifer and valvula in (57) dorsal and (58) ventral views; (59) first valvifer and valvula, lateral view. ICO = inner concavity of first valvifer; MSC = median sulcus of sternite VII. Figure 55 shows in green three small sclerites associated with the bases of the second valvulae. Only clearly visible portions of structures were colored in figures 55 and 56.

FIGURES 60 – 63. Erythrogonia sexguttata (Fabricius). (60) First valvifer and valvula, lateral view; (61) second valvula, lateral view; (62) teeth of median portion in detail; (63) apical portion in detail. CBP = curved basal portion of first valvula.