Posts Tagged: Proceedings of the Natural Academy of Sciences
Our nation's wild bees--which include bumble bees, squash bees and leafcutter bees--are in...
A squash bee, Peponapis pruinosa, pollinating a squash. (Photo by Kathy Keatley Garvey)
A yellow-faced bumble bee, Bombus vosnesenskii, foraging on wild blackberry blossom. (Photo by Kathy Keatley Garvey)
Leafcutter bees pollinate alfalfa, carrots, other vegetables and some fruits. This one is foraging on a rock purslane. (Photo by Kathy Keatley Garvey)
This map shows the decline of wild bees in the United States. (University of Vermont)