Examination of 1,805 specimens of seed beetles (Coleoptera: Chrysomelidae: Bruchinae) from Mexico in the National Museum of Natural History (USNM), Washington, DC, resulted in discovery of unpublished data from 11 genera and 63 species. New country records for Mexico include Amblycerus lineolatus (Motschulsky, 1874) and Amblycerus luctuosus (Sharp, 1885). Seven plant species are reported as new host records: Prosopis articulata S. Watson and Senna mollissima var. glabrata (Benth.) H.S. Irwin & Barneby (both Leguminosae) for Amblycerus obscurus (Sharp, 1885), Rhynchosia pyramidalis (Lam.) Urb. (Leguminosae) for Zabrotes subfasciatus (Boheman, 1833), Abutilon palmeriA. Gray (Malvaceae) for Abutiloneus flavicornis (Sharp, 1885), Prosopis chilensis (Molina) Stuntz for Algarobius johnsoni Kingsolver, 1986, Prosopis articulata S. Watson for Algarobius prosopis (LeConte, 1858), and Bauhinia macranthera Hemsl. (Leguminosae) for Gibbobruchus divaricatae Whitehead and Kingsolver, 1975. Canavalia maritima Thouars (Leguminosae) is confirmed as a host for Caryedes longicollis (Fahraeus, 1839). Twenty-four new state records are reported for more localized distributions within Mexico. Updated information from specimens previously published is included.