Thirty four (34) species of Alchisme Kirkaldy, 1904 are presented with descriptions, illustrations, and key for identification, except for two of them which were not seen, A. truncaticornis (Germar, 1835) and A. intermedia (Distant, 1881). The following nomenclatural changes are introduced: Achisme intermedia (Distant, 1881), sp. rev.; A. testacea (Fairmaire, 1846), sp. rev.; Alchisme apicalis (Walker, 1851) = A. costaricensis Goding, 1929, syn.n.; A. inermis (Fairmaire, 1846) = Triquetra nigrocarinala Fairmaire, 1846, syn.n.; A. rubrocostata (Spinola, 1852) = A. neuquina Remes-Lenicov, 1978, syn.n.; A. turrita (Germar, 1835) = Triquetra submaculata Buckton, 1901, syn.n.; A. ustulata (Fairmaire, 1846) = Triquetra virgata Fairmaire, 1846, syn.n.; A. virescens (Fairmaire, 1846) = Alchisme spinosa Funkhouser, 1940, syn.n.; Alchisme banosiensis sp.n. (from Ecuador); A. bordoni sp.n. (from Venezuela); A. colombiana sp.n. (from Colombia); A. salta sp.n. (from Argentina); A. cultellata sp.n. (from Venezuela); A. deflexa sp.n. (from Venezuela); A. erecta sp.n. (from Venezuela); A. frontomaculata sp.n. (from Brazil); A. goiana sp.n. (from Brazil); A. henryi sp.n. (from Venezuela); A. insolita sp.n. (from Colombia); A. mackameyi sp.n. (from Ecuador); A. onorei sp.n. (from Ecuador); A. schuhi sp.n. (from Peru).
Hemiptera; Membracidae; Membracinae; Hoplophorionini