Pentacomia (Mesochila) Rivalier, 1969 includes 12 species. Six of those were recently studied and had their distribution updated, while other six were only cited in very few papers, being only record for States or biogeographic provinces, without specific information about their distribution. We examined 392 specimens deposited on many important collections along with all the bibliography concerning the group. A synopsis of the species distribution along with informative maps is presented.