Blue berry bee will do. also known as the common bumble bee. not to be confused with the carpenter bee, which is larger.
Yes, a ground nesting bee which will build in ground cavities and also build in marsh or any other low growing grass. Also a social bee, which the carpenter bee is not. Meaning they live in colonies like honey bees do.
There is also a larger species that is larger than the carpenter bee, which nest in the same manner as the smaller one and is also a social bee. :)doak