So, are all the iconic monsters all covered between the MM1-MM3 for 4e?
The Ambush Spider (Level 2 Lurker) is very fast and only needs regular concealment or cover to hide. The Spiderling is a Level 4 Minion Skirmisher inflicts cumulative vulnerability to poison. The Feyspitter Spider (Level 7 Controller) has poison that sends it victims into a dreamlike dance, sliding them 3 squares each time they fail their saves. A Lolth's Reaver is a Level 25 Brute that can serve as a mount.What kind of spiders and gargoyles are present? What levels on the apes?
By which you mean "the first-edition Fiend Folio".