Are There Carnivorous Insects?

Insects are known for having diets that are rich in plant matter such as flowers, seeds, nectar or leaves, but about one-third of all insect species are carnivorous, which means that they eat animal flesh. Although some carnivorous insects eat dung or rotting meat, the majority of them hunt for their food. For instance, beetles are predators that actively hunt for prey, such as slugs and worms. The beetles then use their sharp mouth appendages known as mandibles to trap, crush and eat their prey. Other carnivorous insects — notably mosquitoes — survive primarily on a diet that involves sucking the blood of humans or other animals.

More about how insects eat:

• It has been estimated that there are 1.5 billion insects for every person on Earth.


• Some carnivorous insects, such as botflies and sexton beetles, lay their eggs in the flesh of dead, decaying mammals so the larvae have an immediate food source after hatching.


• Ants, wasps, grasshoppers and beetles chew much like humans do. They hold food in their jaws and move them sideways to chew the food.

Frequently Asked Questions

What are carnivorous insects and how do they differ from other insects?

Carnivorous insects are those that actively hunt, capture, and consume animal prey, distinguishing them from herbivores or omnivores. They possess adaptations such as sharp mandibles, venom, or trapping mechanisms to subdue their prey. These predatory habits play a crucial role in controlling pest populations and maintaining ecological balance.

Can you give examples of common carnivorous insects?

Common carnivorous insects include praying mantises, which are known for their ambush predation tactics, ladybugs that feed on aphids, and dragonflies, which are aerial hunters of other insects. Antlions, with their pitfall traps, and assassin bugs, which use a stealthy approach to capture prey, are also notable examples.

How do carnivorous insects capture their prey?

Carnivorous insects employ various methods to capture prey. Praying mantises use their camouflaged appearance and lightning-fast strikes. Antlions dig conical pits to trap ants and other insects. Some, like the Venus flytrap, have evolved intricate traps that snap shut when triggered, while others, like dragonflies, excel in aerial pursuit.

What ecological roles do carnivorous insects play in their habitats?

Carnivorous insects are vital for pest control, often keeping populations of herbivorous insects in check, which can otherwise become agricultural pests. According to research, they contribute significantly to nutrient cycling by breaking down prey, which enriches soil fertility and supports plant growth, thereby sustaining the food web.

Are there any carnivorous insects that are beneficial for gardens or agriculture?

Yes, many carnivorous insects are beneficial for gardens and agriculture. Ladybugs, for instance, consume vast quantities of aphids, protecting plants. Lacewings and hoverflies are also allies to gardeners, preying on pests like mites and caterpillars. Their presence can reduce the need for chemical pesticides, promoting a healthier ecosystem.

How can I attract carnivorous insects to my garden?

To attract carnivorous insects to your garden, plant a variety of flowering plants to provide nectar and pollen, which some predatory insects require for sustenance. Avoiding pesticides, creating habitats with mulch or logs, and maintaining a diversity of plant species can create a welcoming environment for these beneficial predators.