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).