19 Aug 2014.
Pine Run Reservoir, Bucks Co, PA.
Found on Daucus carota.
ID courtesy of Ken Wolgemuth:
15 Aug 2014.
Buckingham Wetlands, Bucks Co, PA.
Found on Solidago.
ID courtesy of John Ascher:
On my windowsill at night.
Never seen these on a tree before, always on structures.
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...