Cortona otamendiensis, 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 : 365-366

Cortona otamendiensis sp. n.

( Figs 7–8 , 11 H)

Length. Male: 2.4 mm (n=5); female: 3.1 mm (n=4).

Morphology. Crown longer than distance between eyes ( Fig. 7 A). Male anteclypeus tapered distally ( Fig. 7 C).

Male genitalia. Subgenital plate long, lateral margin distinctly concave ( Fig. 8 C). Style with articulating arm short; preapical lobe rectangular; apophysis thick fingerlike, apex subtruncate ( Fig. 8 D). Connective shorter than aedeagus. Aedeagus slender, tapered from base to apex, curved dorsad with pair of slender apical appendages directed distad ( Fig. 8 E–F).

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 H).

Material examined. Holotype: male, Argentina: Buenos Aires ca. Reserva Otamendi , 10 m, 34° 13′57" S, 58° 53′50" W, 23 Jan 2008, C. H. Dietrich, vacuum, AR37–4 [ MLP] . Paratypes: 4 females, same data as holotype ; 1 male, same data except lot #AR37–8 ; 3 males, Argentina: Entre Rios, Rt. 14 5 km N Guayaguaychu , 20 m, 32° 58′0" S, 58° 35′18" W, 16 February 2014, 16 February 2014, C. H. Dietrich, vacuum, AR 14–30–1 [ INHS] .

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

Remarks. This species is readily distinguishable from all others within Cortona by the aedeagus with a pair of short apical appendages directed apicad, and shaft curved 70° dorsad with a slim apex in lateral view ( Fig. 8 E–F).

Figures

FIGURE 7. Cortona otamendiensis sp. n. male: A, habitus, dorsal view; B, habitus, lateral view; C. face.

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 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.