User blog comment:Garr9988/Tree of Jesse/@comment-5782071-20190516051728

The Silk Road seems to have existed and had reached Egypt during WH2's reign.

Since the artifacts are the tree and the Caretaker ribbon itself, I don't think the moths have to be artifactual and merely processed the tree they consumed into artifactual silk (can we make "artifactual" a term?), so we can just have a sample of silkworms introduced to the tree after having been transported over the Silk Road rather than search for a specific species that does reside in cedar trees or make a fictional species that already lived in it by the time it was collected.