Bring a Webwood Egg to Gilshalan in Aldrassil.
Now that I have the spiders' venom, I'd like some live specimens to study. Unfortunately, capturing a living, giant spider is more than I can ask of you, young [class]. And a giant spider is more than I could handle myself!
But if you can find an unhatched egg, then delivering specimens will be much easier, and I can then arrange for the unhatched spiders to be contained.
There must be a nest deep in the Shadowthread Cave. Please, search for an egg in the nest and return it to me.