Agradecimentos: We are grateful to Dr. Silvio Nihei for valuable suggestions that improved the first draft of this manuscript, the Willi Hennig Society for subsidizing the TNT computer program and making it freely available. Two anonymous reviewers are also acknowledged

Orchid bees are endemic to the Neotropics and were sampled more intensively in the Atlantic Forest in the last decade than in that of other Brazilian biomes. In this study, we aimed at identifying the main distributional patterns and areas of endemism of

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