Nelidina coronata sp. nov.

(Figs 10–18, 30, 31)

Diagnosis. Pygofer (Fig. 12) with dorsoapical lobe narrow and curved dorsally, horn-shaped. Style, in lateral view (Fig. 15), with sinuous apophysis, slightly broadened preapically. Aedeagus (Figs 17, 18) with shaft flattened dorsoventrally; with pair of long lateroapical processes, ventrally directed and then strongly curved anterodorsally; apex of shaft with laterally serrate subcircular dorsoapical area.

External morphology. Male holotype: length 6.3 mm. External characteristics as in generic description.

Male terminalia. Pygofer, in lateral view (Fig. 12), subtrapezoidal, length approximately 1.4 times height; dorsal margin moderately declivous posteriorly; ventral margin slightly rounded, with setae on apical half; dorsoapical lobe narrow and curved dorsally, horn-shaped, with small sclerotized medioventral tooth; ventroapical lobe broadly rounded. Subgenital plate, in lateral view (Fig. 13), with dorsal margin deeply concave, apex bent dorsally; in ventral view (Fig. 14), each plate about 3.5 times longer than maximum width; ventral margin with 7– 8 macrosetae distributed on apical half. Style, in lateral view (Fig. 15), with sinuous apophysis, broadened preapically; in dorsal view (Fig. 16), with apical third curved internally; apex flattened dorsoventrally. Connective (Fig. 16) about half length of style. Aedeagus (Figs 17, 18) with shaft flattened dorsoventrally; in caudal view, broad basally and narrowing towards apex; with pair of lateroapical processes longer than shaft, ventrally directed and then strongly curved anterodorsally, apex attenuate; apex of shaft with laterally serrate subcircular dorsoapical process, flattened dorsoventrally; preatrium long, about one-third length of shaft.

Female unknown.

Etymology. The specific epithet, coronata, comes from the Latin “coronatus” and means crowned. It refers to the aedeagal apex, which resembles a crown (Fig. 18).

Material examined. Holotype male: “ Peru, San Martin, Cons. Mun.\ Zona Barreal 23 km S. Picota \ 07°04.88’S 76°18.89’W, malaise, 06–15.iii.2005,\ M.E.Irwin & J.D.Vasquez ” (MUSM).

Remarks. Nelidina coronata sp. nov. is similar to N. defila and N. taeniola in the shape of the aedeagus (Figs 17, 18). However, the new species can be readily distinguished from other species of the genus by the shape of the dorsoapical lobe of the pygofer (Fig. 12) and the dorsoapical aedeagal process with several small spines (Fig. 18).