Biastes is a genus of cuckoo bees belonging to the family Apidae. Its constituency has been expanded to include species formerly treated in the genus Neopasites, now a subgenus within Biastes.
↑Sless, Trevor J.L., Odanaka, K.A., Alva-Caballero L.X., et al. (2025). Expanded phylogeny of Nomadinae (Hymenoptera: Apidae) with integration of UCE and DNA barcode sequence data. Insect Systematics and Diversity 9(3): 1-9 doi:10.1093/isd/ixaf011