Ischnorhina amazonica sp. n.

(Figs 15–23)

Type locality. Reserva Biológica da Campina (S2º 35’27” W60º 1’51”), Amazonas State, Brazil.

Diagnosis. Head red, postclypeus strongly compressed, angulated in profile with one longitudinal carina and a strongly marked lateral ridge; thorax red, pronotum with median carina, forewing either all black or apical third red and distal third black, legs black.

Description. Head (Figs 20–23): red, with rostrum reddish brown; compound eyes rounded, arranged transversely; vertex smooth, rectangular lacking median carina; ocelli red, closer to each other than to compound eyes; tylus rectangular, smooth, with median carina; antennae reddish brown, pedicel abundantly setose, basal body of flagellum conic without arista; postclypeus red, strongly compressed, angulated in profile with one longitudinal carina, lateral grooves slightly marked, lateral ridge present and strongly marked; rostrum extending to mesocoxae.

Thorax (Figs 20–23): red; pronotum red, hexagonal, with median carina, anterior margin straight, lateralanterior margins straight, lateral posterior margin slightly sinuous, posterior margin grooved; scutellum red, with slight central concavity and horizontal grooves slightly marked; tegmina black with visible venation, apical reticulation not developed; hindwings hyaline with brownish venation, vein Cu1 thickened at base; legs reddish brown, metathoracic tibia with two lateral spines (basal spine smaller than those located in the apical crown and apical spine larger); apical crown of tibia with two rows of spines; basitarsus with one row of spines covered by sparse setae; subungueal process present, similar to claws. Abdomen: black. Genitalia: Male: Pygofer (Fig. 19) with hooked process between anal tube and subgenital plates; subgenital plates (Fig. 19) short with digitiform apex; parameres (Fig. 18) each with one apical spine directed posteriorly, apex long and slender, dorsal process developed, rounded and prominent; aedeagus (Figs 15–16) cylindrical with two pairs of fin-like processes, the first pair located at apex and the second located medially, both inserted laterally. Female (Fig. 17): First valvula of ovipositor short and wide with acute apex and one basal process poorly developed, rounded, directed ventrally; second valvulae short, apical third of dorsal margin serrate, third valvulae short and wide, with long setae ventrally.

Measurements (mm). Body length: Ƥ 8.4–8.5, 3 8.3–8.5; pronotal length: Ƥ 1.5–1.6, 3 1.0–1.1; forewing length: Ƥ 6.4–6.9, 3 6.6–6.9; maximum width of head, including eyes: Ƥ 1.7–1.8, 3 1.2–1.6; width between humeral angles: Ƥ 3.2–3.3, 3 2.2–2.9.

Distribution. BRAZIL: Amazonas State.

Remarks. This species is dimorphic with regard to the color of the forewings: some specimens have the tegmina entirely black, whereas others have the basal third of the tegmina red and the distal region black.

Etymology. The species name “ amazonica ” refers to the region where the type specimen was collected.

Material examined. Type material: Holotype (3, dissected, deposited at INPA), with labels: “ Brasil, Amazonas, Manaus / Reserva Biológica da Campina / 11.VII.2008 77m, 2º35’27”S / 60º1’51”W (light trap) P.C. Grossi leg.”; Paratypes (23, deposited at AMNH), with labels: “ Brasil, Amazonas, Manaus / ZF 2 km 14, Torre 02º35’21”S / 60º06’55”W 12–15.X.2004 (light trap) / J.A Rafael, C.S. Motta, F.F. Xavier Fº, A. Silva Fº & S. Trovisco leg.”; Paratype (Ƥ, deposited at INPA), with labels: “ Brasil, Amazonas, Manaus, ZF2 / km14, Torre 02º35’21”S / 60º06’55”W 10–13.X.2004 (light trap) / S. Motta, A. Silva Fº & S. Trovisco leg.”; Paratypes (13, 1Ƥ, deposited at DZUP), with labels: “ Manaus Brasil Torre / Torre ZF–2 02º35’21’’S 06º06’55”W / 20.XI.2003 (Light trap 40m) / J.A. Rafael, FF. Xavier Fº / & A.S. Filho leg.”; Paratype (3, deposited at DZUP), with labels: “ Brasil AM, Manaus, ZF2 / Km–14 Torre, 02º35’21”S / 60º06’55”W, 19–22.III.2004 / light trap 40m, J.A. Rafael, C.S. Motta, F.F. Xavier Fº/ A. Silva Fº, J.T. Câmara leg.”; Paratype (3, dissected, deposited at INPA), with labels: “ Brasil, Amazonas, Município Itacotiara / Fazenda Aruana Am10 Km 215 / 27–28–IX–1992 / Motta, C.S., Peralta, F.A., Hutching, R.S.G., Teles, B.R., Harnada, N. leg.”. Additional material: 1Ƥ: JCRC.