What Do Earwigs Eat?

Earwigs, those peculiar-looking insects with formidable pincers, have long been the subject of both curiosity and concern. These nocturnal creatures, known for their elusive behavior, are not only a staple of folklore but also play a vital role in ecosystems. In this comprehensive guide, we delve into the dietary habits of earwigs, shedding light on what they eat and why it matters, particularly for gardeners. As these insects can be both friends and foes in the garden, gaining insight into their culinary preferences can help garden enthusiasts strike a balance between coexistence and pest control.

Earwig Diet Overview

Earwigs, scientifically known as Dermaptera, are opportunistic feeders with a primary diet that primarily consists of plant material, such as leaves, flowers, and fruit. They are particularly drawn to soft, decaying plant matter and will feed on vegetation that is readily accessible. However, this is only the tip of the dietary iceberg when it comes to earwigs.

In addition to plants, earwigs exhibit a remarkable degree of dietary flexibility. They are known to consume various organic materials, including fungi, algae, and lichens, further contributing to their classification as omnivores. This adaptability in their food choices allows earwigs to thrive in diverse environments, from gardens to forests.

Earwigs as Omnivores

One of the defining characteristics of earwigs is their status as omnivores, meaning they have a broad diet that encompasses both plant and animal matter. While they are often associated with plant feeding, their omnivorous nature sets them apart from many other insects.

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In their quest for sustenance, earwigs are not limited to leaves and petals. They readily consume insects, spiders, mites, and other small invertebrates. This opportunistic behavior extends to scavenging on the remains of dead insects, making them nature’s recyclers. Furthermore, earwigs have been observed preying on aphids and other garden pests, endearing them to some gardeners as natural pest controllers.

Significance of Their Dietary Habits

Earwigs play a modest yet valuable role in their ecosystems due to their varied dietary habits. Their consumption of plant material helps in the decomposition of organic matter, aiding in nutrient cycling and soil enrichment. This action contributes to the health of the ecosystem by facilitating the breakdown of dead plant material, ultimately benefiting plant growth.

Furthermore, earwigs’ role as predators can assist in maintaining a balance in insect populations. By preying on garden pests like aphids, earwigs can serve as a natural form of pest control, reducing the need for chemical interventions. This ecological role underscores the importance of understanding and conserving earwig populations in various habitats.

Plant Matter and Earwigs

Earwigs are known to have a varied diet that includes plant matter. While they are not exclusively herbivorous, they do consume leaves, flowers, fruits, and other plant materials. Earwigs often target soft and decaying plant matter, making them particularly fond of vegetation that is past its prime or has been damaged by other factors. This preference for decaying plant material can lead to an association between earwigs and damaged crops or garden plants.

However, it’s important to note that earwigs don’t typically consume healthy, living plants to the same extent as they do decaying or damaged vegetation. They are opportunistic feeders and are more likely to feed on plants when other food sources are scarce. As such, while earwigs do eat plant matter, they are not considered major plant pests compared to some other insects.

Preference of Earwigs for Certain Plants

Earwigs do exhibit some preferences when it comes to the types of plants they consume. They are often found on plants that offer hiding places during the day, such as thick foliage or densely packed flowers. They may also take shelter in the crevices of plant stems and leaves.

In gardens, earwigs are more commonly associated with certain plant species, including marigolds, dahlias, and zinnias. These plants provide the ideal hiding spots and, at times, are sources of food. Additionally, earwigs are attracted to plants with fragrant flowers and may feed on the petals.

Potential Damage Caused by Earwigs to Gardens

While earwigs may not be the primary culprits in plant damage, they can still cause harm to gardens under certain conditions. Their feeding on plant matter, especially on decaying or damaged portions, can lead to cosmetic damage. This includes holes in leaves, petals, and soft fruits.

Gardeners may notice that plants like lettuce, strawberries, and hostas are particularly vulnerable to earwig feeding. In some cases, if earwig populations are high and food sources are limited, they may extend their feeding to healthier parts of plants.

However, it’s important to keep the damage in perspective. Earwigs are not usually responsible for extensive damage to plants, and the cosmetic effects can often be tolerated without the need for significant intervention. Effective management techniques, such as the use of traps or natural predators, can help keep earwig populations in check without resorting to chemical pesticides.

Insects as Prey

Contrary to their reputation as primarily herbivorous creatures, earwigs are indeed opportunistic predators and readily consume other insects. While plant matter makes up a portion of their diet, they are equally adept at preying on a variety of small invertebrates. This carnivorous aspect of their diet plays a crucial role in maintaining balance in insect populations, making them valuable allies in natural pest control.

Common Insect Prey for Earwigs

Earwigs exhibit a surprisingly diverse taste for small invertebrates, contributing to their role as versatile predators in the insect world. Among their common insect prey are aphids, those notorious sap-sucking pests that can wreak havoc in gardens. Earwigs’ appetite for aphids is particularly advantageous for gardeners, as it helps protect plants from infestations. Beyond aphids, earwigs readily target mites of various kinds, including spider mites and plant-feeding mites, making them valuable assets in agricultural settings. 

Their opportunistic nature leads them to consume soft-bodied insects, such as caterpillars and moth larvae, along with insect eggs. They are not limited to just these choices and may also feed on tiny spiders, springtails, and other diminutive invertebrates encountered in their environment. The breadth of their diet makes earwigs valuable allies for those seeking natural, environmentally friendly methods to control harmful insect populations in gardens and other ecosystems.

Hunting and Feeding Mechanisms of Earwigs

Earwigs employ a combination of physical adaptations and behaviors for hunting and feeding. The most distinctive feature of earwigs is their pincers, which are located at the rear of their abdomen. These pincers are used for a variety of purposes, including capturing and holding prey. While they may appear menacing, earwig pincers are not typically harmful to humans.

Earwigs are primarily nocturnal, hunting for insects and other prey during the night. Their preference for darkness is driven by a need to avoid daytime predators and reduce the risk of desiccation in hot, dry conditions.

In addition to actively hunting insects, earwigs are known scavengers. They will feed on the remains of dead insects, providing a valuable ecological service by aiding in the decomposition process.

While not related to hunting, it’s worth noting that some earwig species can release a foul-smelling liquid from scent glands when threatened. This defensive secretion helps deter predators.

Behavior and Feeding Habits

Earwigs are not known for consuming vast quantities of food daily. Their feeding habits can vary depending on factors like food availability and environmental conditions. On average, an adult earwig may consume about 30 to 40 milligrams of food per day. This amount is relatively modest compared to some other insects.

Their nocturnal behavior plays a role in their daily food consumption. Earwigs are most active during the night, which is when they actively hunt for prey, forage for plant matter, and engage in feeding activities. During the day, they seek shelter in crevices, under leaves, or in other hidden spots, conserving energy for their nocturnal pursuits.

Scavenging Behavior and Consumption of Dead Insects

One intriguing aspect of earwig feeding habits is their inclination towards scavenging. Earwigs are opportunistic scavengers, and they will readily feed on the remains of dead insects they encounter. This behavior contributes to the recycling of nutrients in ecosystems, as they assist in the decomposition process.

When they come across the carcasses of insects, earwigs use their pincers to tear off small pieces of the dead organism. This scavenging behavior not only provides earwigs with an additional food source but also helps to break down organic matter, returning nutrients to the ecosystem. In this way, earwigs play a role in maintaining ecological balance.

Nutritional Value

The nutritional value of the prey consumed by earwigs can vary depending on the specific insects and invertebrates they feed upon. In general, earwigs target soft-bodied insects and arthropods, which tend to be rich in protein. Protein is a crucial component of their diet as it provides essential amino acids necessary for growth and reproduction.

The consumption of aphids, for example, offers earwigs a protein-rich meal, which can be particularly beneficial during the reproductive season when they need additional energy. The nutritional value of their prey contributes to the overall health and vitality of earwig populations. It’s worth noting that the diversity of their diet, including both plant matter and insects, allows earwigs to obtain a range of nutrients, further highlighting their adaptability as omnivores.


Our exploration of earwig dietary habits reveals these enigmatic insects as versatile omnivores with an essential ecological role. They balance their diet between plant matter and a diverse range of insect prey, including garden pests like aphids. While their reputation may be tinged with concern for gardeners, it’s crucial to recognize that earwigs’ primary preference for decaying plant material and their role as natural recyclers make them valuable contributors to ecosystems. Gardeners and enthusiasts alike can benefit from understanding these dietary intricacies, striking a harmonious balance between coexistence and responsible pest control.