A simplified subgeneric classification of the bumblebees (genus Bombus)

@article{Williams2011ASS,
  title={A simplified subgeneric classification of the bumblebees (genus Bombus)},
  author={Paul H Williams and Sydney Anne Cameron and Heather M. Hines and Bj{\"o}rn Cederberg and Pierre Rasmont},
  journal={Apidologie},
  year={2011},
  volume={39},
  pages={46-74}
}
A system of subgenera has been widely used for nearly a century to communicate ideas of relationships among bumblebee species. However, with 38 subgenera in recent lists for about 250 species, the system has come to be seen as too complicated. In this paper we suggest four criteria to guide the process of simplifying the subgeneric system, so that ideally subgenera should become: (1) monophyletic; (2) fewer; (3) diagnosable from morphology; and (4) names for important behavioural and ecological… Expand
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