how long do june bugs live for
June Bug Facts. June bugs have a one-year life cycle. Females lay their eggs mid summer, and larva hatch into grubs about 18 days later. The grubs molt twice during the winter months and and third larval stage lasts nearly nine months, before adults appear in the late spring. They can be anywhere from 0.5 inches to 1.5 inches long and are typically black or brown.