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By: Oliveira, Favízia Freitas de - Mahlmann, Thiago - Engel, Michael S.Type: ArticleIn: ZooKeysVolume: 153Series:Issue:Date: 2011Page Range: 81-90Publication Info: Pensoft Publishers 2011Subjects: Anthophila Apoidea Brazil Chilicola, Hylaeosoma Colletidae taxonomy Xeromelissinae