Coming in Shadowlands Patch 9.0.
<Dread Crawler Queen>
|Retains its original name after taming.|
When Tomb Burster's event is active you can spawn her by destroying a bunch of Crawler Eggs in Dredhollow.
|Dominance Keep, Revendreth|
|Found during the Venthyr-only quest, "Crypt Crashers".|
|60||Dominance Keep, Revendreth|