The number of species of the genus Ischnoptera reported from Uruguay is doubled, increasing its number to 6. Ischnoptera argentina Hebard, 1921; I. bilunata Saussure, 1869; and I. litostylata Hebard, 1921 are reported for the first time. The available information on the species distribution is mapped.
Blattaria; Ischnoptera; cockroaches; distribution
