Cortona

Duan, Yani, Dietrich, Christopher H. & Zhang, Yalin, 2017, Revision of the South American grassland leafhopper genus Cortona Oman (Hemiptera: Cicadellidae: Deltocephalinae: Deltocephalini) with description of four new species from Argentina, Zootaxa 4242 (2), pp. 359-371 : 361

Key to species of Cortona Oman

1. Aedeagus in ventral view distinctly broadened at or beyond midlength ( Fig. 2 G); female sternite VII median lobe with dis- tinctly contrasting dark pigment and occupying less than half total width of sternite ( Fig. 11 E–G).......................2

- Aedeagus in ventral view evenly tapered through most of length, at most only slightly broadened preapically ( Fig. 8 E); female sternite VII median lobe without distinctly contrasting dark pigment and occupying more than half total width of sternite ( Figs 11 H–I)...............................................................................................4

2. Aedeagal shaft in ventral view broad apically with deep emargination ( Fig. 2 G); female sternite VII median lobe trilobed at apex ( Figs 11 E–F).....................................................................................3

- Aedeagal shaft in ventral view slender and tapered apically ( Figs 6 E–F); female sternite VII with median lobe narrow and elongate ( Fig. 11 G)..................................................................... Cortona silvai sp. n.

3. Aedeagus with lateral appendages not extended to apex ( Figs 2 F–G)................................. Cortona minuta

- Aedeagus with lateral appendages extended nearly to apex ( Figs 4 F–G)...................... Cortona catanachae sp. n.

4. Aedeagus with apical appendages distinct, apex of shaft appearing bifid ( Fig. 8 E)............ Cortona otamendiensis sp. n.

- Aedeagus with apical appendages vestigial, apex appearing acuminate ( Figs 10 C–D)............ Cortona concordica sp. n.

Figures

FIGURE 2. Cortona minuta A, male pygofer lobe, lateral view; B, male pygofer and segments X – XI, dorsal view; C, valve, ventral view D, subgenital plate, ventral view; E, style, dorsal view; F, G, H, connective and aedeagus, dorsal, ventral and lateral view, respectively.

FIGURE 4. Cortona catanachae sp. n. A, male pygofer lobe, lateral view; B, male pygofer and segments X – XI, dorsal view; C, subgenital plate, ventral view; D, style, dorsal view; E, valve, ventral view; F, G, H, connective and aedeagus, dorsal, ventral and lateral view, respectively.

FIGURE 6. Cortona silvai sp. n. A, male pygofer lobe, lateral view; B, male pygofer and segments X – XI, dorsal view; C, valve and subgenital plate, ventral view; D, style, dorsal view; E, F, connective and aedeagus, dorsal and lateral view, respectively.

FIGURE 8. Cortona otamendiensis sp. n. A, male pygofer lobe, lateral view; B, male pygofer and segments X – XI, dorsal view; C, valve and subgenital plate, ventral view; D, style, dorsal view; E, F, connective and aedeagus, dorsal and lateral view, respectively.

FIGURE 10. Cortona concordica sp. n. A, male pygofer lobe, lateral view; B, valve, subgenital plates, styles, connective, and aedeagus, ventral view; C, E, connective and aedeagus, ventral view and lateral view, respectively; D, detail of apex of aedeagus, ventral view.

FIGURE 11. Females of Cortona: A – D, Cortona minuta: A, first valvula; B, detail of first valvula apex; C, second valvula; D, third valvula. E – I, abdominal sternite VII: E, C. minuta; F, C. catanachae; G, C. silvai; H, C. otamendiensis; I, C. concordica.