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Christophe J. Praz, Andreas Müller, Bryan N. Danforth, Terry L. Griswold, Alex Widmer: Phylogeny and biogeography of bees of the tribe Osmiini (Hymenoptera: Megachilidae). In: Molecular Phylogenetics and Evolution. Band49, Nr.1, Oktober 2008, ISSN1095-9513, S.185–197, PMID 18675365.
Christophe J. Praz, Andreas Müller, Bryan N. Danforth, Terry L. Griswold, Alex Widmer: Phylogeny and biogeography of bees of the tribe Osmiini (Hymenoptera: Megachilidae). In: Molecular Phylogenetics and Evolution. Band49, Nr.1, Oktober 2008, ISSN1095-9513, S.185–197, PMID 18675365.