Date of this Version
The species of Gigantorubra and Angulopis encountered in the Cacaulandia area of central Rondonia, Brazil, are reviewed. These include species (all new) of Gigantorubra (G. microserrata, G. divergens, G. quadramacula, G. ampla, G. fuscafascia, G. silva, G. rondonia, G. obscura, G. perplexa, G. purpura) and one new species of Angulopis (A. tenuis). Thecla sangola Hewitson (1868) is recognized as having priority over Thecla autoclea Hewitson (1863-1878 ), new synonym. Rondonia continues to appear as a center of thecline endemism and to provide abundant examples of sibling species diversity.