Insights into Bee Evolution: A Tribute to Charles D. Michener Bryan N. DanforthEduardo A. B. Almeida Editorial Pages: 1 - 2
Phylogenetics of allodapine bees: a review of social evolution, parasitism and biogeography Simon M. TierneyJaclyn A. SmithMichael P. Schwarz Review Article Pages: 3 - 15
Colletidae nesting biology (Hymenoptera: Apoidea) Eduardo A. B. Almeida Review Article Pages: 16 - 29
Components of nest provisioning behavior in solitary bees (Hymenoptera: Apoidea) John L. Neff Review Article Pages: 30 - 45
A simplified subgeneric classification of the bumblebees (genus Bombus) Paul H. WilliamsSydney A. CameronPierre Rasmont Original Article Pages: 46 - 74
Phylogeny of the Xeromelissinae (Hymenoptera: Colletidae) Based upon Morphology and Molecules Eduardo A. B. AlmeidaLaurence PackerBryan N. Danforth Original Article Pages: 75 - 85
Phylogeny of Halictidae with an emphasis on endemic African Halictinae Bryan N. DanforthConnal EardleyFano José Randrianambinintsoa Original Article Open access Pages: 86 - 101
A molecular phylogeny and the evolution of nest architecture and behavior in Trigona s.s. (Hymenoptera: Apidae: Meliponini) Claus RasmussenJoão M. F. Camargo Original Article Pages: 102 - 118
Correlated evolution of mating behaviour and morphology in large carpenter bees (Xylocopa) Remko LeysKatja Hogendoorn Original Article Pages: 119 - 132
The evolution of a pollen diet: Host choice and diet breadth of Andrena bees (Hymenoptera: Andrenidae) Leah L. LarkinJohn L. NeffBeryl B. Simpson Original Article Open access Pages: 133 - 145
Phylogeny and host-plant evolution in Melittidae s.l. (Hymenoptera: Apoidea) Denis MichezSébastien PatinyNicolas J. Vereecken Original Article Pages: 146 - 162
Phylogenetic analysis of the corbiculate bee tribes based on 12 nuclear protein-coding genes (Hymenoptera: Apoidea: Apidae) Atsushi KawakitaJohn S. AscherDavid W. Roubik Original Article Pages: 163 - 175
Faunal composition and species richness differences of bees (Hymenoptera: Apiformes) from two north American regions Robert Minckley Original Article Pages: 176 - 188
The biology of a Patellapis (s. str.) species (Hymenoptera: Apoidea: Halictidae): sociality described for the first time in this bee genus Kim TimmermannMichael Kuhlmann Original Article Pages: 189 - 197