What is a "may beetle"?

A may beetle is a common insect belonging to the scarab beetle family. These beetles are typically brown or black in color and have a robust body with a distinctive shape. May beetles are most active during the spring and early summer months, hence their common names. They are attracted to light sources and often fly around outdoor lights at night. The larvae of may beetles, known as white grubs, live in the soil and feed on plant roots, which can sometimes cause damage to lawns and gardens.