This work presents a check-list and comment on the distribution of the species of Euglossini found in the State of Maranhão, based on works conducted in several areas with odoriferous baits. The sampling of the bees followed a standardized methodology during one year, once a month, in the municipalities of Barreirinhas, Buriticupu, São Luís and Vitória do Mearim, with captures from six and 12 hours. In the other localities were made aleatory collects. The chemical baits used in the attraction of males were cineole, eugenol, vanillin, methyl salicylate and benzyl benzoate. A total of 44 species were found belonging to the following genera: Euglossa (25 species), Eufriesea (11), Eulaema (5) and Exaerete (3). About 81,8% are present in the amazonian areas and 65,9% in the areas with more open vegetation with influence of the "cerrados" and "babaçuais" which occupy great part of the State.
Insecta; Apidae; chemical baits
