Cyrnellus boliviensis, new species

Figs 1F–1I

Diagnosis. Cyrnellus boliviensis is closely related to C. fraternus and C. zapateriensis . It differs from these species by the flat section of the subapicomesal spine. In the other species this spine is cone-shaped and has, therefore, a circular basal section.

Description: Adult: Length of each forewing 4 mm. General coloration light brown.

Male genitalia: Anterior margins of sternite IX concave; posterolateral margins of segment IX convex, slightly undulate (Fig. 1F, ix). Base of each intermediate appendage slightly narrower than median part, apex broad (Fig. 1F, iap). Each preanal appendage with mesolateral process narrow at base (Fig. 1F, mlp); dorsolateral process slightly curved, directed distad (Fig. 1F, dlp); mesoventral process wide at base, gradually thinner toward apex (Fig. 1F, mvp). Inferior appendages short, angulate, each with apex as nearly as broad as basal part (Fig. 1F, ia); subapicomesal lobe low, bearing flat, triangular spine with broad base (Fig. 1G, as); internal lobe rounded (Fig. 1G, il). Phallus tubular; dorsal phallic sclerite Y-shaped, short, with posterior arms thick and anterior arm thicker and curved ventrad (Figs 1H, 1I, ds).

Material examined. Holotype: Male: BOLIVIA: Laguna Belen, near Trinidad, 14°27’29’’S, 64°51’41’’W, 26.v.2003 (CBGP).

Paratypes: BRAZIL: Am. Castanho, 101 Km SW Manaus, 25–26.i.1979, O.S. Flint Jr., 1 male (USNM). SURINAM: Corapinerkreen Republick, 9–11.ix.1971, D.C. Geijskes, 1 male (USNM) .

Etymology. The name is a Latin adjective referring to the type country (Bolivia).

Distribution. Bolivia, Brazil, Surinam.