Narceus gordanus Care in Other Invertebrates Posted July 22, 2018 2 hours ago, Arthroverts said: Their care is pretty much identical to most other millipedes, although they like cooler temperatures than some of the tropical species. They are spirobolids as well, meaning quality rotting wood in quantity is necessary to keep them healthy. What temperature were you keeping them at, and did the substrate dry out? Was there obvious cracks or scars in their exoskeletons? Were they lethargic when you first got them? If you can answer these questions it will be easier to determine the cause of death. Hope this helps, Arthroverts Temps 75-76 F; moist substrate; I do believe there were a couple scars; one seemed letharigic when the seller packaged them. I just went back and replaced the dead ones, these ones are younger and livelier.