28 Jul 2014.
Buckingham Springs, Bucks Co, PA.
14.5 mm forewing length.
Found in garage.
These blue mud wasps gather each spring in the evenings and leave early in the morning. This goes on for a week or so.
St Olaf Natural Lands
The Sphecidae (Latreille, 1802) are a cosmopolitan family of wasps that include digger wasps, mud daubers, and other familiar types that all fall under the category of thread-waisted wasps. Both of the traditional definitions of the Sphecidae (the conservative one, where all the sphecoid wasps other than ampulicids and heterogynaids were in a single large family, and the more refined one, where the seven large sphecid subfamilies were each elevated to family rank) have recently been...