I live in Austin, TX, USA.
Just looked under a wooden table in my dining room (shares wall with outside of house) and saw this little tubes hanging underneath. A few still had live worm-like guys protruding.
I'm guessing some kind of larvae. There were little granules of something on the bottom of the table.
The majority of them are near the floor in the corner where the wood end table was. Though I do see four or five hanging from the ceiling in that area.
It's hard to tell from the pictures, but each of the tubes is maybe 1/4" long.
Any thoughts on what these might be, specifically if they look like anything that destroys wood?
Just had a pest control inspector come out. He says the tubes are moth larvae, as suggested below (good call).
The saw dust is likely from carpenter ants. He says they seem to be localized to the end table so I should probably get rid of it, which is what I'm going to do.
I'll monitor the area for more signs up damage from the ants, but so far it looks okay.