Nest of Pipe Organ Mud Dauber - Trypoxylon politum Wayne, Passaic County, New Jersey, USA October 16, 2008 Size: 17 cm x 14.5 cm
Nest is on a sheltered inner east wall (nest is west-facing) of painted cement blocks in a parking garage (ground level) ca. 8 feet above the floor. It is near a latticework outer wall which provides easy access for the wasps (which I did not see). Note the use of different mud sources.
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