What type of bug/nest is this? Central NJ. Someone suggested mud dauber but it doesn’t look like anything I googled.
Thanks, sorry, best photo I have.
Yeah hard to tell by the pic.
My best Entomologist guess is an immature stage of some type moth.
At this stage they’re beetles.
Where was this, were you near a kitchen or stored food pantry?
Was the opposing wall the exterior of the structure?
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I was thinking moth too Marc. Usually white, then once discarded will turn a brownish color over time. Just a guess though… Probably a lick test is in store… 
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Yes it is Tom!
India moth is my guess. There was probably dog food stored right below.