What Are Earwigs?

Check out this answer from Consensus:

Earwigs are intriguing insects with unique physical characteristics and behaviors. While they can sometimes be considered pests themselves, their role in controlling other pest populations makes them valuable in integrated pest management strategies. Understanding the balance of their ecological impact is crucial for optimizing their benefits in agricultural systems.

Earwigs are fascinating insects that play a significant role in various ecosystems. They are often recognized by their distinctive pincers, or forceps, located at the end of their abdomen. These insects belong to the order Dermaptera and are found in many parts of the world.

Physical Characteristics

Earwigs are typically small to medium-sized insects, ranging from 5 to 25 millimeters in length. Their bodies are elongated and somewhat flattened, which allows them to hide in narrow crevices. The most notable feature of earwigs is their cerci, or pincers, which can vary in shape and size between species and are used for defense and capturing prey.

Habitat and Behavior

Earwigs are nocturnal creatures, meaning they are most active at night. During the day, they seek shelter in dark, moist environments such as under rocks, logs, or within leaf litter. This behavior helps them avoid predators and extreme weather conditions. Earwigs are omnivorous, feeding on a variety of organic matter, including plants, insects, and decaying material.

Role in Agriculture

In agricultural settings, earwigs can be both beneficial and detrimental. They are known to feed on pest insects, which can help control pest populations in crops. For instance, in corn production, earwigs have been studied for their effectiveness in suppressing corn borers, a common pest that damages corn plants. When used in combination with other biological control agents like Trichogramma, earwigs have shown to significantly reduce pest damage and increase crop yield1.