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european earwigs

European Earwigs

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European Earwigs

European earwigs (Forficula auricularia) are small, omnivorous insects that belong to the order Dermaptera. They are commonly found throughout Europe and have also been introduced to other parts of the world, including North America. European earwigs are characterized by their elongated, flattened bodies, and distinctive pincers, or cerci, located at the end of their abdomen, which resemble forceps. These pincers are used for various purposes, including defense, capturing prey, and mating rituals.

Physical Characteristics: European earwigs typically measure between 10 to 16 millimeters in length, with brown or reddish-brown coloring. They have a pair of membranous wings folded beneath short, leathery forewings (elytra), but they are not strong fliers and are primarily terrestrial insects. European earwigs have a segmented body with antennae and chewing mouthparts.

Habitat and Behavior: These earwigs are nocturnal creatures, primarily active at night, and during the day, they seek shelter in dark, moist places such as crevices, under leaf litter, and in garden debris. They are known to feed on a wide range of organic matter, including plant material, insects, and decaying organic material. While they can be considered beneficial in gardens for their role in consuming plant pests, they can also damage plants by feeding on leaves, flowers, and fruit.

Reproduction: European earwigs exhibit maternal care, a behavior uncommon among insects. After mating, the female earwig lays eggs in underground burrows or other suitable locations and guards them. She protects the eggs from predators, ensures their moisture levels are optimal, and even cleans them to prevent fungal growth. Once the eggs hatch, the mother continues to care for her nymphs, providing them with food and protection until they are able to fend for themselves.

Interaction with Humans: European earwigs are not generally harmful to humans, but they can sometimes be considered pests when they invade homes seeking shelter or food. However, their presence is usually harmless, and they do not transmit diseases. In gardens, they can be both beneficial and detrimental, depending on the balance of pests and plants.

Anatomy and Pincers: The pincers, or cerci, at the end of the abdomen are one of the most distinctive features of European earwigs. These pincers are used for a variety of purposes. They aid in capturing and holding prey, defending against predators, and during courtship and mating rituals. Despite their fearsome appearance, they are not harmful to humans and are rarely used aggressively against humans.

Diet: European earwigs are opportunistic feeders with a varied diet. They are considered beneficial insects in gardens as they consume a wide range of pests, including aphids, mites, and other small insects that can damage plants. However, they can also feed on plant material, especially during periods of food scarcity, which may lead to damage to crops.

Life Cycle: The life cycle of European earwigs typically consists of several stages: egg, nymph, and adult. After the female lays her eggs and guards them, they hatch into nymphs. Nymphs resemble miniature adult earwigs but lack fully developed wings and reproductive structures. As they molt and grow, they gradually develop wings and reproductive capabilities, eventually becoming adults. The process from egg to adult can take several weeks to months, depending on environmental conditions.

Habitat and Distribution: European earwigs are highly adaptable and can be found in a wide range of habitats, including gardens, agricultural fields, forests, and urban areas. They prefer moist and dark environments, which is why they are often found in damp garden debris or beneath rocks and logs. Their distribution extends beyond Europe; they have been introduced to other continents, such as North America, where they can be found in various regions.

Communication: Earwigs communicate with each other through tactile and chemical signals. They use their pincers to engage in subtle forms of communication during mating rituals and territorial disputes. Chemical signals, such as pheromones, also play a role in attracting mates and marking territories.

Pest Control: While European earwigs are known to feed on garden pests, their effectiveness as biological pest control agents varies. Their impact on pest populations can be influenced by factors like the availability of alternative food sources and environmental conditions. In some cases, they can help reduce pest damage, but in others, their plant-feeding behavior can be detrimental to crops.

European earwigs are small insects with distinctive pincers found throughout Europe and other parts of the world. They play a role in ecosystems by consuming pests but can also be considered nuisance pests themselves when they invade homes or gardens. Their unique maternal care behavior sets them apart from many other insects, contributing to their intriguing biology.

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