The Blue Mud Dauber is a stunning metallic blue wasp with iridescent wings that specializes in attacking and provisioning its nests with black widow spiders. It often takes over abandoned nests of other mud daubers rather than building its own. Its habit of seeking out black widow spiders makes it beneficial around human structures.
Best time to see a Blue Mud Dauber
The best time to see a Blue Mud Dauber is May–July, when about 61% of U.S. sightings happen, based on 8,175 research-grade iNaturalist observations.
Not certain it is a Blue Mud Dauber? What bug is this? walks through what to check first and the lookalikes that catch people out.
Recent Blue Mud Dauber sightings near you
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