Mud Dauber
- Large, ½ to 1 inch in length,
- Resemble bumble bees, but abdomen is dark,
- shiny and relatively hairless.
- Tunnel into wood
- Prefer bare unpainted or unstained wood
- Attack wooden decks, fascia boards, fences, wood siding and window sills
- Entrance hole measures 3/8 to ½ inch in diameter.
- Normally there is a pile of sawdust below entrance hole.
Introduction
This group of wasps gets its common name from the fact that they construct their nest of mud. They are typically nuisance pests. Mud daubers are found throughout the United States.
Habits
Mud daubers are solitary wasps, they are not social and do not live in colonies. Mud daubers do not defend their nests, and only rarely sting. Mud daubers typically select a sheltered site to build their mud tubes. Favorite sites include under eaves, porch ceilings, in garages and sheds left open, in barns, protected building walls, in attics, etc… Nests typically exhibit round holes in them as the wasps emerge. This means the nest is probably old and inactive after springtime.
