Insect nest and tunnels - Ask Extension
I found these nests and tunnels behind a wooden board on my siding. The holes in the siding are from bolts not the bugs. I am stumped and really curio...
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Insect nest and tunnels #747544
Asked May 02, 2021, 6:03 PM EDT
I found these nests and tunnels behind a wooden board on my siding. The holes in the siding are from bolts not the bugs. I am stumped and really curious. The tunnels are like burnt leaves and empty inside. No webbing from spiders. No stink bugs to be seen. Tunnels are up to about a foot long and the nests are made out of grasses.
Howard County Maryland
Expert Response
This is the work of the small, harmless insect called the grass carrying wasp.
Here is a page from Penn State that will tell you more about them:
https://extension.psu.edu/grass-carrying-wasp
Christine
