Sceliphron caementarium

What the well-dressed mud-daubing wasp is wearing: black and yellow.The Black and Yellow Mud Dauber builds a mud nest. Trypoxylon politum, the Pipe Organ Mud Dauber, is almost all black and builds pipe organ-like nests.Here’s another gathering mud. Her left antenna is broken off. She does not seem to get much mud per trip. This must make for a lot of back and forth! It helps if the nest is nearby. This particular wasp flew off faster than I could follow. But another nearby (this is damn good mud!) flew fifteen feet away from the murky pond. The rusting iron cap on the urn on the left shelters her nest. The metal juts out on this side, making for a wasp-sized passage. She’ll seal up her eggs in mud cells in there, along with the entombed paralyzed spiders she has provisioned the larval wasps with. The specific epithet caementarium means mason, or builder of mud walls. Some years back, I had one of their nests in my old Cobble Hill backyard.

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