- Adult: Various species of beetle.
- Larvae: White or cream-colored between ¼" and 1" long with brown heads. Usually curled into a "C" shape.
- Eggs: Varies with species.
Timing of damage: VE to V8
Type of damage: Root pruning, wilting and plant death.
Scouting: Dig up a cubic foot (2' long by 1' wide by 6" deep) of soil in five areas of the field and sort for grubs, or look for them during spring tillage.
Economic threshold: No treatments are available. Don’t plant soybeans if two or more non-Japanese beetle grubs per cubic foot of soil are found.