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. 2010 Jul 13;10:109. doi: 10.1673/031.010.10901

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© 2010

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 4. — Locations where queens of the taxa were collected in 1988. Specimens of Bombus edwardsii and Bombus melanopygus (Hymenoptera: Apidae) were collected in California and Oregon from 13 February - 03 March. Specimens of B. sylvicola and B. melanopygus were collected in southern Alberta from 16 April - 16 June. High quality figures are available online.