Hyperbius geniculatus (Signoret, 1863)

(Figs 7–12)

Ditomotarsus geniculatus Signoret, 1863: 549 [nueva especie: Chile].

Hyperbius geniculatus: Stål, 1868: 534; Berg, 1892: 50 [Argentina: Chubut]; Breddin, 1897: 340 [Argentina: Patagonia del Sur. Chubut]; Kirkaldy, 1909: 180 [Argentina: Patagonia del Sur]; Pennington, 1920: 10 [Argentina: Chubut; Rio Negro; Santa Cruz; Tierra del Fuego]; Kumar, 1974: 11 [Argentina: Chubut: Epuyen, Rio Turbio]; Faúndez, 2007: 77; Carvajal et al., 2015a: 148; Grazia & Schwertner, 2015: 836.

Studied material. ARGENTINA: Neuquén, 1 Male, 4 Females, 7927. (MACN); Río Negro, 4 Females, 4 broken specimens, 10264, 22- VII- 1910, A. Breyer (MACN); 1 Female, 10185, J. Koslowsky (MACN); Chubut, 1 Male, M. J. Viana. (MACN); 3 Males (MACN) .

Female: We have only measured females to be able to compare the morphology with H. joceliae .

Measurements (n = 6): Total length: 6.84 (7.24) 7.63; width: 3.63 (3.95) 4.21. Head. Length: 1.32 (1.37) 1.45; width: 1.74 (1.84) 1.89; interocular space: 0.95 (1.06) 1.13; antennal segment lengths: 0.45 (0.48) 0.53; II: 0.82 (0.87) 0.92; III: 0.42 (0.43) 0.45; IV: 0.63 (0.70) 0.76; V: 0.74 (0.78) 0.82. Pronotum. Length: 1.37 (1.45) 1.50; width at base: 3.10 (3.39) 3.68.

Diagnostic characters. General color blackish with well-marked punctures and smooth pale yellowish areas, particularly along the clavo-corial suture, margins of pronotum and exocorium (Fig. 7). Head (Fig. 8) with two longitudinal pale yellowish lines behind the ocelli and a rounded spot between them of the same color, all them well marked. Dorsally with thick, well-defined punctures. Mandibular plates just surpassing the apex of the anteclypeus. Antennae with the segment I exceeding the apex of the head. Female genitalia (Fig. 11). First gonocoxae wide, black, markedly rough longitudinally; second gonocoxae semicircular, dark brown, with transverse roughness; paratergite 9 subtriangular, apically acute, black and rough, with outer margin clear and smooth.

Distribution. CHILE, ARGENTINA: Neuquén, Río Negro, Chubut, Santa Cruz, Tierra del Fuego.

Host Plant. Unknown.