Cortona concordica, Duan, Yani, Dietrich, Christopher H. & Zhang, Yalin, 2017

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 : 368

Cortona concordica sp. n.

( Figs 9–10 , 11 I)

Length. Male: 2.6 mm (n=1); female: 2.9–3.5 mm (n=4).

Morphology. Crown longer than distance between eyes ( Fig. 9 A–C). Male anteclypeus tapered distally.

Male genitalia. Subgenital plate long, lateral margin distinctly concave. Style with articulating arm short; preapical lobe rectangular; apophysis slender, strongly curved, apex acuminate with small preapical tooth ( Fig. 10 B). Connective shorter than aedeagus ( Fig. 10 C, 10E). Aedeagus slender, tapered from base to strongly acuminate apex, curved dorsad with distal appendages vestigial ( Fig. 10 C–E).

Female abdomen. Sternite VII with median lobe covering approximately two-thirds of posterior margin, trilobed, median lobe slightly narrower and more produced than lateral lobes, with dark pigment indistinct ( Fig. 11 I).

Material examined. Holotype: male, Argentina: Entre Rios, Rt. 14 km 275, ca. Concordia , 50 m, 31° 19'15" S, 58° 5'8" W, 4 January 2008, C. H. Dietrich, vacuum, AR1–1 [ MLP] . Paratypes: 4 females, same data as holotype [ INHS] .

Etymology. The name is an adjective derived from the type locality.

Remarks. This is the only member of the genus without distinct appendages on the aedeagus, although vestiges of distal appendages are visible when the apex of the shaft is examined at high magnification ( Fig. 10 D). The lack of distinct aedeagal appendages and the acuminate shape of the aedeagus give the aedeagus of this species a resemblance to the condition commonly present in the Old World genus Maiestas . This species is placed in Cortona because it is nearly identical to other Cortona species in external morphology and male and female genital morphology. One of the examined females is macropterous.

Figures

FIGURE 9. Cortona concordica sp. n. A, male habitus, dorsal view; B, macropterous female habitus, dorsal view; C, brachypterous female habitus, dorsal view; D, male habitus, lateral view; E, macropterous female habitus, lateral view.

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.