Dilasia colludens (White, 1879)

(Fig. 45)

Cardiastethus colludens White, 1879: 148 .

Lasiochilus (Dilasia) colludens: Reuter, 1884: 20 .

Dilasia colludens: Carpintero, 2002: 27 .

Diagnostic characters: Measurements, see Table IV. Male: Small species. General coloration black; hemelytra dark brown with their extreme bases paler; legs and labium testaceous. Antennal segment II thickened towards the apex and shorter than head. Antennal segments (I:II:III:IV) 1: 2.3: -: - (3–4 broken). Dorsally smooth, basal lobes of the pronotum and scutellum, rugose (Fig 57). Dorsal pilosity dark and short. Metasternum apically short (as in A. mirifica) (Fig. 58). Spiniform setae on midtibiae long and thick. Setae on dorsal surface restricted to outer margins. Genitalia with left paramere “hammer-type” with apex widened more than in other species (Fig. 56). Aedeagus with two feather-like lateral and subapical structures I call “ processus penniformis ” (see comments on this structure in “A brief discussion on some characters used in the present revision ”). Female: Parietovaginal gland small. Seventh sternite not punctured centrally (Fig. 59). Antennal segments (I:II:III:IV) 1: 2.3: -: -.

Distribution: Brazil, Argentina. (Fig. 48)

Material examined: ARGENTINA: ♀ Formosa, Ea. La Marcela, 35 Km E El Colorado, X-2007 (artificial light) Dellapé, slide-mounted, MACN (new distributional record in Argentina) ; ♀ Salta, Pocitos, XI-1954, slidemounted, MACN; ♂ Santa Fe, Reconquista, XI-1939, slide-mounted (only genitalia) MACN .

Discussion: This species differs from D. basalis by its smaller size and shorter interocular space (larger eyes), from the other species in having two subapical feather-like structures on the aedeagus, and by the widened apex of left paramere.