Mud Daubers University of Maryland Extension

Mud daubers are dark, often metallic black or blue wasps. They are not aggressive.

Harlequin hijinks: Harlequin bug, Murgantia histrionica — Bug of the Week

Mud Dauber Identification, Habits & Behavior

Wasps – Fairfax Gardening

Mortal Combat - Wasp vs. Spider - Auplopus mellipes

Mud Dauber Identification Mud Daubers in Central and Eastern Virginia

Check out this old nursery of Organpipe Mud Dauber Wasps!

Protecting the Home From Wasps

Scoliid Wasp University of Maryland Extension

Docile Dirt Daubers, Nature of the Lake

Ohio Birds and Biodiversity: Black-and-yellow Mud Dauber

What do mud dauber wasps eat? - Quora

Home and Garden Information Center

Wasps Have a Purpose Gardening in the Panhandle