Placogenys Usinger and Matsuda, 1959

Contreras, Eugenia Fernanda & Coscarón, María Del Carmen, 2012, The Aradidae (Insecta, Hemiptera, Heteroptera) of Argentina, Zootaxa 3500, pp. 1-35 : 32

Genus Placogenys Usinger and Matsuda, 1959

Placogenys Usinger and Matsuda, 1959 . Classif. Aradidae , p. 203. Type-species: Pictinus cockerelli Usinger and Matsuda , monobasic.

Diphyllonotus Kormilev, 1959b. Proc. Entomol. Soc. Wash., 61(2): 61. Type species: Diphyllonotus explanatus Kormilev, original designation. Synonymized by Kormilev, 1966. Proc. of the U. S. Nat. Mus., 119(3548): 16.

Diagnosis: Body form elongate, surface granular and beset with only minute hairs on raised portions; the anterior process formed a prominent clypeus and distincly lobate subflattened genae tha extend forward well beyond apex of clypeus and are contiguous on their apical portions with the tips only briefly notched; antenniferous tubercles plate-like, subtriangulary produced on either side of bases of antennae and angulate at apices; pronotum with the lateral margins lamellate and with the anterior margin formed as a distinct collar with a ring-like appearance; scutellum much shorter than pronotum on median line with a prominent longitudinal carina; connexival plates distinct except that the suture between second and third segments is vague.