Watareus, Matriarch of Armageddon, is a Unique Barbed Lurker found in the Battlefields of Eternity in Act V of Diablo III.
In combat, she has Thunderstorm, Electrified and Illusionist affixes.
A bounty may be offered to kill Watareus, in which case the secondary objective is to kill 150 enemies.
Trivia
It is the only confirmed female Lurker, yet her model is no different from any other, possibly showing that Barbed Lurkers have no sexual dimorphism.