The tribe Acutalini Fowler is redescribed as well as the genera Acutalis Fairmaire, Euritea Stål, and Thrasymedes Kirkaldy. The following new taxa and nomenclatural changes are presented: Thrasymedes mexicana sp.n. (from Mexico, Oaxaca); Bordonia gen.n., with B. venezuelana sp.n. (type-species) (from Venezuela, Portachuelo), B. clypeata sp.n. (from Colombia, Cuesta Boba), B. majuscula sp.n. (from Venezuela, Portachuelo), and Cornutalis gen.n., with C. cauca sp.n. (type-species) (from Colombia, Cauca), and C. validu sp.n. (from Ecuador, Sto. Domingo). Acutalis fusconervosa Fairmaire, 1846 = Horiola venosa Walker, 1858, syn.n.; Euritea munda (Walker, 1858) = Stictolobus nitidus Funkhouser, 1940, syn.n.; Bordonia nigricosta (Goding, 1926), comb.n.; Bordonia virescens (Funkhouser, 1940), comb.n.. One species is transferred to Smiliinae-Ceresini: Tapinolobus curvispina (Walker, 1858), comb.n. (formerly in Thrasymedes) = Tapinolobus fasciatus Sakakibara, 1969, syn.n.; another one is transferred to Darninae-Cymbomorphini: Eumela darnioides (Walker, 1858), comb.n. (formerly in Euritea).
Homoptera; Membracidae; Smiliinae; taxonomy