@article{buschini_wolff_2006,  title={Notes on the biology of Trypoxylon (Trypargilum) opacum Brèthes (Hymenoptera; Crabronidae) in Southern Brazil},  volume={66},  ISSN={1519-6984},  url={https://doi.org/10.1590/S1519-69842006000500017},  DOI={10.1590/S1519-69842006000500017},  number={3},  journal={Brazilian Journal of Biology},  publisher={Instituto Internacional de Ecologia},  author={Buschini, M. L. T. and Wolff, L. L.},  year={2006},  month={Aug},  pages={907–917} }