Hadrus Skin-Weaver
History
They were normally encountered by the Imperium, in the southwestern extremes of the Segmentum Tempestus, but this changed in 920.M37. It was that year, that a Hadrus parasite-colony was found on the Jericho Reach world, Mataras IV. In order to prevent the Xenos from spreading to Mataras' neighboring worlds, the Death Watch ultimately performed an Exterminatus upon it. How the Hadrus appeared on the world, that was far from Segmentum Tempestus, is a mystery of dire import that still remains unsolved.[1]
Source
- 1: Deathwatch: Know No Fear Timeline pdf, pg. 7 - The Spiders of Mataras