Blue Mud Wasp, Chalybion californicum?
On Narrowleaf Milkweed
Definitely a lot of inchworms around for a few Ammophila to play with.
Not sure about the ID. Is it a golden digger wasp? It had been found close to an underground nest (hole in the ground about 6-8mm).
Location: Europe > Portugal > Algarve
Date Photo Taken: October 9, 2007
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The wasp was carrying what looked like a stink bug, walking and occasionally attempting to fly for a short hop.
Fascinating! Dozens of these >1" long wasps in one area, excavating burrows, carrying prey (see photos - possibly caterpillars? Looked like sticks) to the burrows (to lay an egg on?), and then carefully entombing them pebble by pebble. I'm assuming the smaller dark one in the additional photo is a male - there were several of them, but it may be a different species?
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...