A phylogeny of the oil bee tribe Ctenoplectrini (Hymenoptera: Anthophila) based on mitochondrial and nuclear data: evidence for early Eocene divergence and repeated out-of-Africa dispersal.

Abstract excerpt

The bee tribe Ctenoplectrini, with two genera, comprises nine species in tropical Africa and ten in Asia and Australia. Most of them collect floral oil, pollen, and nectar from Cucurbitaceae, but three species are thought to be cleptoparasites. The unusual morphology of Ctenoplectrini has made it difficult to infer their closest relatives, in turn preventing an understanding of these bees' geographic and temporal...

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