Over the past few days I've noticed small dark brown bees going in and out of holes in ground in the area we've cleared for this years tomato plants. The holes are surrounded by tiny mounds of loose dirt, just like ant hills. The bees look like half-size honey bees except that they're a darker brown color. I'm not particularly interested in killing them, but I would like them to go away.
Can anybody suggest a Web site with pictures where I can ID these critters? My Google searches have produced too many results to be useful.