Cardiasilus ruda sp. nov.

Figs 9, 10, 11, 19

Diagnosis.

The inner margin of epandrium with a short, dorsal, sub-triangular, pre-apical process followed by a short, ventral, sub-rectangular, anteriorly curved, apical process (Fig. 10 A, F, G) separates this species from its congeners.

Description.

Male (Fig. 9 A). Body Length: 10.3 mm; wing length: 5.7 mm. Head (Fig. 9 A – D). Similar to C. aysu sp. nov. except as noted: Thorax (Fig. 9 A, B, D). Two pairs of dorsocentral macrosetae. Terminalia (Figs 10, 11). Epandrium with a short, dorsal, sub-triangular, pre-apical process followed by a short, ventral, sub-rectangular, anteriorly curved, apical process (Fig. 10 A, F, G). Subepandrial sclerite goblet-shaped (Fig. 11 D).

Female. Unknown.

Type examined material.

Holotype • ♂ (MZUSP) labelled: “ PARAGUAI | Colônia Piraretá [ca 25°30'09.2"S, 56°59'00.1"W] | 25.xii.1971 ” “ HOLOTYPE | Cardiasilus ruda | Soares, Camargo & Lamas [red label] ” . Holotype condition: Both postpedicel and mid legs broken off, terminalia dissected and stored in microvial at the same pin.

Remarks.

The new species is remarkably similar to C. aysu sp. nov., differing only in the shape of epandrium with a short, dorsal, sub-triangular, pre-apical process followed by a short, ventral, sub-rectangular, anteriorly curved, apical process (Fig. 10 A, F, G). The epandrium lacks such processes at dorsal inner margin in C. aysu sp. nov., and C. dangeloi sp. nov.

Distribution.

Paraguay (department of Cordillera) (Fig. 19).

Etymology.

Rudá is the deity of love in the pantheon of deities of Tupi-Guarani culture. It alludes to the male epandria that resembles an ideogram of a heart (Fig. 10 A). Treated as a noun in apposition.