
Remember that land-based or terrestrial insects float initially, then they drown. Suspended terrestrial insects are now subsurface within the water column. Both dry or surface and subsurface or nymph patterns are deadly, and even a combo rig is often productive even without visible rise forms.
Ants, beetles and grasshoppers make up the majority of land based bugs, but crickets, inch worms and caterpillars can round out the terrestrial menu. We mostly nymph fish on the Chattahoochee but keep a lighter dry fly rod rigged with an ant or a beetle for head-hunting visible or audible rising fish.