Canoptek Locusts
Canoptek Locusts are a class of Canoptek used by the Necrons and are a unique handiwork of the Cryptek Raunek Ka. Similar to Scarabs, these machines are even smaller and contain a small arcane energy generator that can disrupt the Warp within the immediate vicinity. As a result, Psykers lose control over their powers. Raunek Ka is normally accompanied by a single swarm of Locusts that are concealed on his person.[1]
Source
- 1: Black Crusade: Tome of Fate, pg. 118