| nesting and pollen preference of osmia lignaria lignaria (hymenoptera: megachilidae) in virginia and north carolina orchards. | cavity-nesting megachilid bees in the genus osmia, found throughout the palearctic and nearctic regions, are good candidates for domestication. in north america, osmia lignaria say has been reported to be an excellent pollinator of tree fruit and is currently being developed for commercial use in orchards. this is largely because of research over several decades with the western subspecies of this bee, osmia lignaria propinqua cresson, in western orchards. the behavior of the eastern subspecies, ... | 2014 | 24865141 |