@article{arbulo_santos_salvarrey_invernizzi_2011,  title={Proboscis Length and Resource Utilization in Two Uruguayan Bumblebees: Bombus atratus Franklin and Bombus bellicosus Smith (Hymenoptera: Apidae)},  volume={40},  ISSN={1519-566X},  url={https://doi.org/10.1590/S1519-566X2011000100010},  DOI={10.1590/S1519-566X2011000100010},  number={1},  journal={Neotropical Entomology},  publisher={Sociedade Entomológica do Brasil},  author={Arbulo, N and Santos, E and Salvarrey, S and Invernizzi, C},  year={2011},  month={Jan},  pages={72–77} }