Listed below are all the locations in which a Level 9 Insect Mound, Dead Tree or Spider Egg can be found.
Addict's Ascent - Dead Tree
Bearhold Valley - Dead Tree south of Lady's Lake Portal and Insect Mount north of Mounds Portal.
Cook Cavern - Insect Mound
Hungry Troll Cave - Spider Egg
Traders Path - Dead Tree and Spider Egg