Spintharus gracilis Keyserling from Rio Grande do Sul, São Leopoldo. Female (A–C); A dorsal B ventral C lateral. Male (D–F); D dorsal E ventral F lateral G–I epigynum: G digested dorsal H digested ventral I undigested ventral J palp ventral K male syntype palp illustrated by Levi (1963a). L–N Male from Rio Grande do Sul, Eldorado do Sul (30°05'32.2"S, 51°40'20.4"W) L dorsal M ventral N lateral O palp ventral. While we hypothesize that all illustrated palps belong to S. gracilis, note that the male from Eldorado do Sul is smaller, has smaller palp, and differs subtly in conformation, e.g., area of tegulum exposed.