Loc is 480,-160 2 spiders there and some bones on ground, 1 of the spiders is the ph, kill both anyways. Expect some hours of boring camping before you get noxius pop.
The Noxious only spawns at the front spider spot the one behind him is not a placeholder - and the voice graft sleeves you will loot probably 6 out of 7 times they are so common
This guy drops Evenomed Sleeves for its common drop and they sell nicely the stats aernt that great but it has the effect of Voice Graft for necro's and magicians - I sell it for about 15k might be worth more havent tried to raise it
To find his spawn go through the door that leads to the maze in the courtyard - run left and when you see 2 spiders on your right near 3 obelisks you will turn right but quickly turn left again and then a quick right after that and the first spider you see on your left will be the placeholder for a noxious jungle spider - there's another spider in front of him as well
Also, a poisonstrand hunter spawns before this guy where you see the 2 spiders and the 3 obelisks he is the first spider you see on your right he is placeholder for a poisonstrand hunter
Also, a toxic jungle hunter spawns close to the path to the 4 corners section - you got 3 tae ew mobs on your right of that path and one of the paths connecting that spot has 2 spiders along it and the spider in the back is placeholder for a toxic jungle hunter
Also, an evenomed hunter spawns close to a tae ew bloodfiend spawn - go into the room that he spawns in (fire pit room) and there's a spider on your right that you can see he is placeholder for an evenomed hunter
Also close to that guy's spawn is Toxiferious he is the one that spawns right next to a jungle raptor - and that jungle raptor is also a placeholder for a named that is very hard to slow and not worth it - well good luck