Three new sharpshooter species of the genus Fonsecaiulus Young, 1977 are described and illustrated from specimens collected in the Brazilian Atlantic Forest, F. rectangularis sp. n. and F. guttiformis sp. n. , and in the Brazilian Cerrado, F. filiformis sp. n. The descriptions are based on features from the external morphology, color pattern, and male and female genital structures. Comparisons of the three new taxa with the remaining six Fonsecaiulus species are provided. An identification key to males of all known species of the genus is given.