I have been watching several small burrows in the yarden over the last few days. I finally saw the creature that is constructing and tending them. This individual might have just caught something because it was carefully packing the burrow with fresh materials.
Firefly meadows, BFL
Female. ID based on comparing images in Bugguide.
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...