From zone in, head to the big wall and follow the fire river to the jopal area. Spider is on island surrounded by other mobs but they don't seem to assist. You can tag the spider and drag him up the river and then along the zone-in area wall to your camp. Easy as can be.
I ran into him at the lava islands as well. Found out that he does summon, but he went down pretty easy. Dropped a Spectral Parchment as well as the mace.
Spawned him last night (1/24/06) on the lava islands - he's easier than a WOS mob. Pulling is a snap in fire that you can single pull from a cluster of mobs with an arrow but if you get close multiple mobs agro.
Brought a pally along for the mace. Also dropped a Glyphed Rune which I have not seen on any other loot table for the other swarm mob named. Please update loot table. :)
this guy spawned for me at the Jopal area on the small island...seems all the mobs there can be single pulled without any aggro except if u get too close. The spider came with a smaller spider but chanter AE pac the whole thing and pulling was cake..Trio'd with Me(66 Sk), Bro(65 chanter), and a 67 mage....i didnt do any but made sure aggro was off chanter and mage while mage pet and chanter charm pet was killing spider..he is random spawn i believe and just have to catch him when he's up