| do weather conditions correlate with findings in failed, provision-filled nest cells of megachile rotundata (hymenoptera: megachilidae) in western north america? | cavity-nesting alfalfa leafcutting bees, megachile rotundata (f.) (hymenoptera: megachilidae), are excellent pollinators of alfalfa, medicago savita l., for seed production. in commercial settings, artificial cavities are placed in field domiciles for nesting and, thereby, bee populations are sustained for future use. for this study, cells from leafcutting bee nests were collected in late summer from commercial seed fields. over 3 yr (2003-2005), 39 samples in total of approximately equal to 1,0 ... | 2008 | 18613565 |