Beetle larvae are the prepubescent form of beetles.
Beetle larvae are commonly referred to as grubs. They are very ancient creatures.
A beetle grub hiding within a tree was dug up by an Epidexipteryx but was then stolen and eaten by a larger individual. Later, the smaller Epidexipteryx dug up another beetle grub but accidentally dropped onto the forest floor. The larger Epidexipteryx climbed down to eat it seconds before being eaten itself by a juvenile Sinraptor.