Warrenaria onca Ramos-Gonzalez & Parra

I. Ramos-Gonzalez, Mario, Zamora-Manzur, Carlos, Saladrigas Menes, Dania & E. Parra 1, Luis, 2019, The Trichopterygini (Lepidoptera, Geometridae) of Austral South America: description of new species from Chile, ZooKeys 832, pp. 91-111 : 99-101

Warrenaria onca Ramos-Gonzalez & Parra sp. n. Figures 6, 14, 20

Diagnosis.

This species can be easily distinguished from W. martha (Butler) by the presence of ashy-brown forewings, with less evident antemedial and postmedial bands, which have a ferruginous tone. Both species have an U-shaped posterior apex of the juxta in male genitalia but differs in the shape of the juxta’s base: subquadrangular in Warrenaria onca but subtriangular in W. martha .

Description.

Male (Fig. 6). Head: antennae filiform, subapically broadened; palpi twice as long as eye diameter, covered by piliform straight light-brown scales; frons covered with imbricated flattened ashy-brown scales. Thorax: patagia covered by juxtaposed flattened ashy-brown scales; tegulae covered by piliform whitish, blackish and ashy-brown scales. Tibial formula 0-2-4. Forewings: background color ashy-brown splashed with blackish scales, slightly darker and with olivaceous tinge towards the costa and termen; M3 and Cu1 framed by blackish scales that cross the postmedial band; termen rounded, with dark piliform olivaceous-brown scales; basal region crossed by three wavy subcircular lines: proximal line light brown and diffuse, distal lines blackish and better defined than proximal one; costal margin of basal region only with a small subquadrate blackish spot, splashed with ferruginous-orange scales; antemedial band ferruginous-orange, slightly diffuse, zigzagging; postmedial band wavy, diffuse and composed of three slender ferruginous-orange stripes; costa of medial region mottled with blackish scales; subterminal band formed by two interrupted slender blackish stripes; adterminal band formed by rectangular interveinal spots; terminal band formed by blackish semicircles that are weakly connected with adterminal band; discal spot present and blackish. Hindwings: reduced, three-quarters the length of forewings, subrounded, dark brown, with an extended and subrounded lobe at the base of anal margin; discal spot blackish. Wing venation (Fig. 20): forewing with two accessory cells; hindwing with Sc+R1 and Rs linked by a transverse vein a quarter before of the end of the cell; Rs, M1, M2, M3 are free and located on the vertices of discal cell; Cu1 slightly arched, near the angle of cell; Cu2 inconspicuos, one-fifth before the angle of the cell; lobe crossed by sub-straight A1 and curved A2; discal cell polygonal and extend for half of wing surface. Male genitalia (Fig. 14): valvae subrectangular, costa strongly sclerotized, rounded apical notch with a small indention, about 1/16 the length of valvae; saccus subquadrate; juxta with subquadrangular base and U-shaped posterior apex, with two lateral processes that have a setose triangular apex and are connected in the midventral region, at height of transtilla; uncus simple and slightly setose; transtilla simple. Aedeagus tubular; cornuti arranged as two longitudinal groups in the vesica. Female unknown.

Type material.

Holotype: 1 ♂, pinned, Chile, Nahuelbuta, Río Picoiquen, 22-XII-1965, leg. Fetis, "AMLP 0137" [genitalia slide], "Holotype Warrenaria onca " [red handwritten label] (MZUC-UCCC).

Distribution.

This species is only known from the type locality: Chile, Araucanía, Malleco, Angol, Nahuelbuta, Río Picoiquen. This locality belongs to Maule biogeographic province, Central Chilean subregion, Andean region.

Flight period.

The single specimen was captured in December.

Etymology.

The species name is a noun in apposition and is in reference to the jaguar ( Panthera onca ), a feline that inhabited the forests of southern South America until the end of the 19th century and which gives its name to the type locality (Nahuelbuta) in Mapudungun language (nawel: jaguar; füta: big).