Several folks have contacted me about scarab beetles and white grubs they have found while digging in fields.
There are more white grubs out there than just May/June beetles or Japanese beetles. While most May/June beetles have three-year life cycles, other types of white grubs have annual life cycles. Knowing which of the grubs you've encountered will help you decide on management.
If you find a white grub in a crop field, odds are it will be a May/June beetle (Phyllophaga) species. This Michigan State University will help you determine the type of white grub larvae you've found:.
https://www.canr.msu.edu/fieldcropsent/uploads/files/03GrubID.pdf.
For more information on white grubs and agronomic crops see: https://extension.umn.edu/corn-pest-management/white-grubs .
Happy Trails!
Bruce