What is it?! Unknown egg sac/nest

[TheShadyMantid]

Hey all, wondering if anyone can identify this sac/nest thing I found hanging from the young tulips this morning. (Wisconsin).

I’m finding it surprisingly hard to identify.

Thanks!

 

[Serle]

If it is made of mud it could be a wasp ........ S

 

[TheShadyMantid]

It definitely resembles some of the little mud nests that wasps make, however I'm pretty sure it would be way too early for wasps to be doing this.  I think wasps are ruled out unless someone has evidence otherwise?

 

[Rick]

A gall maybe?

 

[agent A]

gall from fungus or something i think

 

[TheShadyMantid]

Another good guess, and also one of my original suspicions.  But I don’t believe that it’s a gal because it has a hole at the bottom. Usually galls will grow kind of in middle of a stick or branch or leaf, etc.  this thing was just barely hanging from the tip of a tulip leaf.  I’ll take some more pics today.  Thanks guys! 

 

[Orin]

Maybe an old caddisfly house