Yes, white grub worms are the larvae of various scarab beetles, including June bugs, Japanese beetles, dung beetles and northern masked chafers.
June beetle (genus Phyllophaga), also called May beetle or June bug, genus of nearly 300 species of beetles belonging to the widely distributed plant-eating subfamily Melolonthinae (family Scarabaeidae, order Coleoptera). These red-brown beetles commonly appear in the Northern Hemisphere during warm spring evenings and are attracted to lights.
The heavy-bodied June beetles vary from 12 to 25 mm (0.5 to 1 inch) and have shiny wing covers (elytra). They feed on foliage and flowers at night, sometimes causing considerable damage. June beetle larvae, called white grubs, are about 25 mm (1 inch) long and live in the soil. They can destroy crops (e.g., corn [maize], small grains, potatoes, and strawberries), and they can kill lawns and pastures by severing grasses from their roots.
A Grub's Life: Egg to Beetle Life Cycle:
Tip! One of the signs that spring is in full swing is the incessant sound of male June beetles (Phyllophaga spp. and others) crashing into the lit windows of your home at night. More commonly called June bugs, these beetles emerge in late March, April and May to lay their eggs in lawns.
While adult June bugs are a big nuisance, it is their offspring – known as white grubs – that are the real pest. White grubs feed primarily on the roots of warm season grasses in June, July and August, causing massive damage and turf loss. How do you know if your grass is being damaged by white grubs? Here are some signs to look for from Gardenstylesanantonio.com.