A Lantern Mouse a day keeps the Coalscipedes away.

In Shaded Citadel, in the first shelter coming from Industrial Complex, there is a drop to the right. It leads into a pit. Inside this pit, dwell the Coalscipedes/Shadow Spiders. The newly created Cult of the True Annointed Citadel under the local Apostate Superstructure Abomination will sacrifice a Lantern Mouse or Scavenger to the Shadow Spider Gods once every cycle.