Grub vs. Larva — What's the Difference?

Grubs are specifically the larvae of beetles and are known for their thick, white, C-shaped bodies, primarily living underground where they feed on roots and organic debris. In contrast, larva refers to the juvenile form of many insects, not just beetles, and includes caterpillars, maggots, and others, which can inhabit a wide range of environments including water, soil, and plants.

Grubs are often associated with damage to lawns and crops due to their feeding habits, burrowing underground to consume roots of grasses and other plants. On the other hand, various larvae play different roles in the ecosystem, with some being pests like grubs, while others are beneficial, aiding in processes like decomposition or serving as important food sources in aquatic and terrestrial food chains.

Grubs are typically encountered by gardeners and farmers when they turn over soil or examine damaged plants. Larvae, however, might be found in various settings, such as on leaves, in ponds, or under logs, depending on their species and ecological role.

The term "grub" is often used colloquially to refer to any worm-like larva, especially in informal contexts, but it technically denotes beetle larvae. Larva, however, is a scientifically accurate term used in entomology to describe the developmental stage of insects after they hatch from eggs and before they pupate.