The genus llithucia Stal, 1869, considered up to now as a junior synonym of Antonae Stal, 1867, is revalidated. Otherwise, the genera Centrugonia Stal, 1869, Electrophina Buckton, 1905, Penichrophorus Richter, 1943, and Achantomedes Fon-seca & Diringshofen, 1974, are brought into llithucia Stal as new synonyms, except Electrophina already considered so. Some other nomenclatural changes are introduced, such as revalidated names, new combinations, restored combinations, and new synonymies: llithucia Stal, 1867 nom. rev. = Centrugonia Stal, 1869 syn. n. = Penichrophorus Richter, 1943 syn. n. = Achantomedes Fonseca & Diringshofen, 1974 syn. n.; llithucia brevicornis (Richter, 1941) comb, n.; llithucia centrotoides (Walker, 1858) comb. n. = Stictocephala nigriventris Funkhouser, 1919 syn. n. = Centrogonia flavolimbata Goding, 1921 syn. n. = Penichrophorus bogotensis Richter, 1943 syn. n. = Ceresa luteimaculata Funkhouser, 1940 syn. n.; llithucia ciliata (Fairmaire, 1846) comb. n. = Ceresa extensa Walker, 1858 syn. n. = Centrogonia lutea Funkhouser, 1919 syn. n.; llithucia dilalata (Richter, 1943) comb. n.; llithucia elegans (Fowler, 1895) comb, n.; llithucia grisescens (Funkhouser, 1940) comb, n.; llithucia incorni-gera (Richter, 1942) comb, n.; llithucia impressa (Richter, 1943) comb, n.; llithucia nasuta (Stal, 1859) comb. n. = Penichrophorus sericatus Richter, 1943 syn. n.; llithuciapinguicornis (Funkhouser, 1919) comb, n.; llithucia reducta (Richter, 1955) comb. n.; llithucia richteri (Kopp & Yonke, 1979) comb, n.; llithucia terminata (Fairmaire, 1846) comb. rest. = Ceresa morio Fairmaire, 1846 syn. n. = Achantomedes flavocephala Fonseca & Diringshofen, 1974 syn. n.; llithucia vianai (Remes-Lenicov, 1970) comb. n. The following new species are described and illustrated: llithucia delvalle sp. n. (from Venezuela), llithucia nigrata sp. n. (from Colombia), and llithucia boliviano sp. n. (from Bolivia).
Homoptera; Membracidae; Smiliinae; llithucia; nomenclature; taxonomy