The Argia fissa group, of the northern neotropical region, is analyzed. A. anceps sp.n. (holotype S, allotype 9; Costa Rica, San Jose prov., San Pedro, 9-VIII-I979; in USNM) and A. westfalli sp.n. (holotype 3, allotype 5: Mexico, Nuevo Leon, Municipio de Santiago, 2.5 km NW of Rancho Los Atascosos, 2-VII-I987; in ESC A) are described, keyed, illustrated, and compared with the northern South American A. fissa. The types are deposited in FSCA, Gainesville, FL, USA.