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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » Aculeata - Ants, Bees and Stinging Wasps » Apoid Wasps (traditional Sphecidae) » Square-headed Wasps, Sand Wasps, and Allies (Crabronidae) » Square-headed Wasps (Crabroninae) » Trypoxylini » Trypoxylon » Subgenus Trypargilum (Trypoxylon Subgenus Trypargilum) » Organ Pipe Mud-dauber Wasp (Trypoxylon politum)
Photo#251518
Pipe organ mud dauber - Trypoxylon politum
Copyright © 2009 John Pearson

Pipe organ mud dauber - Trypoxylon politum
Ackworth, Warren County, Iowa, USA
February 1, 2009
Size: 8 cm
Several nests plastered onto interior garage walls.
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Contributed by John Pearson on 1 February, 2009 - 2:23pm
Last updated 11 March, 2009 - 10:54am

Not an expert
but maybe Trypoxylon politum (Pipe organ mud dauber)
… John R. Maxwell, 1 February, 2009 - 2:46pm login or register to post comments

 
Looks right!
Thanks, John. That certainly resembles all the other images in the gallery. I have seen the black adults around in summer, just never connected the two for sure.

One speculation: it looks to me like the dauber constructed the tubes in my photo from left to right, using the upper right corner of the preceding tube as a foundation for the next, resulting in an upward curving sequence with the rightmost one strongly draped over its neighbor. Sound right?
… John Pearson, 1 February, 2009 - 5:04pm login or register to post comments

 
Not sure
I've never seen them, but maybe someone else will comment.
… John R. Maxwell, 1 February, 2009 - 6:27pm login or register to post comments

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