Keerit

A species of large, maggot-like, blind garkrid, whose queens dig nests deep into the ground. The large tunnellers break through hard materials, passing earth through their bodies and excreting the processed soil. Smaller carriers drag the waste away, building extensive tunnel networks behind the tunnellers.

The Kedashi have occasionally placed queens inside individual packages, that the trebarnii would then place inside fubarnii dwellings during overnight expeditions. Once they've freed themselves of the package, the young queens then begin to tunnel under the building, resulting in total collapse after a few weeks. The existing tunnels located beneath empire buildings accelerate the process as the carriers clear everything out of them.