Does anyone have information or resources on the range and behavior of non-honey bees? It’s well studied how far honey bees will travel to forage and how they share that information with the hive. But how do solitary bees find new floral resources and how large of an area do they visit?
It’s common advice to plant a wide range of native plants for native pollinators. Due to habitat destruction, many oligolectic and solitary bees are uncommon to rare. I have personal evidence that “if you plant it, they will come” and it doesn’t take very long for a wide range of native bees to show up. Are there fringe populations of rare bees in urban areas searching for new habitat?
For example, Macrotera is a genus of small Andrenidae with several species that visit globemallow (Sphaeralcea). Globemallow will happily grow out of sidewalks and glass dumps in downtown Albuquerque and you’d be hard pressed to find a plant that doesn’t have a herd of tiny brown bees, despite a general abundance of cars and lack of ground nesting habitat.