Grubs - Sweet Corn - Ontario CropIPM
Corn rootworms - Bugwoodwiki
Grasshoppers on corn - Bugwoodwiki
White Grubs : Got Pests? : Board of Pesticides Control: Maine DACF
Cutworms on corn - Bugwoodwiki
Corn School: Scouting for Three Early Season Pests — Wireworm
White grubs - Bugwoodwiki
Papaipema nebris (corn) - Bugwoodwiki
Billbugs on corn - Bugwoodwiki
White grubs (corn) - Bugwoodwiki
White Grubs (Corn)
Helicoverpa zea (corn) - Bugwoodwiki