Spider-Riders shooting thru Wyldwoods?

[Lord Krungharr]

Since Spider-Riders, and Arachnaroks with missile weapons, move over terrain as if they can fly, are they permitted to shoot through Sylvaneth Wyldwoods?  Or does a unit have to outright fly to be able to do that?  I am leaning towards the latter, but wasn't sure what others thought.  Since the shooting happens through terrain and they fly over terrain, hmmm?  Hmmm.

[King Taloren]

It has to outright be flying ability to shoot through Citadel woods and Wyldwoods. So even though they move through terrain like flying it does not count as actual flying. Since flying rules allow to ignore terrain rules , height, and models