Skip to Content
Call Us Today! 888-695-7722

What Do Stink Bugs Eat?

Stink bug on a leaf

Stink bugs, also known as shield bugs, belong to the family Pentatomidae and are primarily herbivorous insects. Their diet consists of various plant materials, and their feeding habits can have economic implications for agriculture. Stink bugs feed on a wide range of crops, fruits, and vegetables, making them significant agricultural pests. Their diet typically includes:

  • Fruits: Stink bugs are known to feed on a variety of fruits, including apples, peaches, cherries, and pears. They pierce the fruit's skin with their specialized mouthparts and suck out the juices, leaving behind small, discolored, and damaged areas.
  • Vegetables: Stink bugs also feed on vegetables like tomatoes, peppers, and beans. They can cause cosmetic damage and reduce the overall quality of the crop.
  • Crops: Stink bugs can damage various crops, including soybeans, corn, and cotton. They puncture the plant's tissue and extract sap, which can lead to yield losses and reduced crop quality.
  • Ornamental Plants: Some stink bug species may also feed on ornamental plants, causing aesthetic damage in gardens and landscapes.

These insects use their piercing-sucking mouthparts to extract plant juices, and while they primarily feed on plant matter, they can sometimes be opportunistic feeders, consuming other insects or decaying organic matter if the opportunity arises. Controlling stink bug populations is essential in agriculture to mitigate crop damage and maintain plant health.

Do Stink Bugs Eat Plants?

Stink bugs eat plants as part of their natural feeding behavior, which is influenced by their biology, physiology, and ecological role. There are several reasons why stink bugs, as herbivorous insects, consume plant matter:

  • Nutritional Requirements: Stink bugs require specific nutrients for their survival and reproduction. They obtain essential nutrients, such as sugars, amino acids, and vitamins, from the plant juices they feed on. These nutrients are necessary for their growth, development, and reproduction.
  • Energy Source: Plants provide a readily available source of energy in the form of sugars, which stink bugs can extract by piercing plant tissues and feeding on the sap. This energy is vital for their daily activities and life processes.
  • Protection and Defense: Some plants have developed chemical defenses against herbivorous insects. Stink bugs, however, have evolved mechanisms to cope with or neutralize these chemical defenses. They are often resistant to plant toxins and can feed on a wide range of host plants, making them adaptable to various environments.
  • Reproduction: Female stink bugs require specific nutrients for producing and laying eggs. By feeding on plants, they can acquire these nutrients and ensure the successful development of their offspring.
  • Ecological Role: Stink bugs play a role in ecosystems as part of the food web. They serve as a food source for various predators, including birds, insects, and spiders. By consuming plants, they become a link in the complex web of interactions within their habitats.

While stink bugs primarily feed on plants, they can also opportunistically feed on other insects, fruits, and organic matter. Their ability to adapt to different food sources can make them challenging agricultural pests, as they may damage a wide range of crops and plants. Efforts to manage stink bug populations often focus on minimizing their impact on agriculture and ecosystems.

Do Stink Bugs Eat Ladybugs?

Stink bugs are primarily herbivorous insects, which means their main diet consists of plant materials. They do not typically feed on other insects, including ladybugs. Ladybugs, on the other hand, are predatory insects that primarily feed on aphids and other small, soft-bodied insects. Ladybugs are considered beneficial insects in agriculture and gardening because they help control pest populations by consuming aphids, which are known to damage plants.

While stink bugs may not actively seek out ladybugs as prey, it's possible that there could be occasional interactions between the two insect species. However, stink bugs are not specialized predators of ladybugs, and such interactions would likely be rare. Both ladybugs and stink bugs have distinct feeding preferences and ecological roles within their respective ecosystems.

What Do Stink Bugs Eat In Winter?

Stink bugs enter a period of dormancy during the winter months, known as diapause. During this time, their metabolic activity decreases, and they become less active. Since stink bugs are primarily herbivorous and feed on plant materials, their food sources become limited during the winter when most plants are not actively growing and producing sap or fruit. Consequently, stink bugs do not have a readily available food source during the winter.

Instead, stink bugs rely on stored energy reserves to sustain themselves through the winter months. They may find sheltered locations, such as inside buildings or beneath tree bark, to conserve energy and avoid harsh weather conditions. Stink bugs can enter a state of torpor, where their metabolic rate drops significantly, allowing them to survive without food for an extended period.

While in diapause, stink bugs primarily subsist on the energy reserves accumulated during the warmer months when they were actively feeding on plants. They are not actively foraging for food during the winter, and their focus is on survival and conserving energy until the arrival of spring when they become more active and resume their herbivorous feeding habits.

What Stink Bugs Eat

Due to their herbivorous diet, stink bugs may consume a variety of plant materials and may opportunistically feed on other substances when plant food is scarce. Here are some more details about what stink bugs eat:

  • Fruits and Vegetables: Stink bugs are known to feed on a wide range of fruits and vegetables, including but not limited to peaches, cherries, tomatoes, peppers, and beans. They use their specialized mouthparts to pierce the plant's tissues and extract the plant juices.
  • Plant Sap: Stink bugs primarily feed on plant sap or phloem, which is a nutrient-rich fluid that circulates through a plant's vascular system. By puncturing plant tissues and feeding on sap, they can obtain essential nutrients, such as sugars and amino acids.
  • Seeds: Some stink bug species may feed on seeds. They can pierce seeds and extract nutrients from them. This can be problematic for agricultural crops, as it can reduce seed quality.
  • Other Plant Parts: Stink bugs may also feed on other parts of plants, such as stems and leaves, especially when young nymphs are developing and do not have fully developed mouthparts for feeding on fruit.
  • Occasional Opportunistic Feeding: In rare instances, stink bugs might engage in opportunistic feeding on other insects or decaying organic matter when plant food sources are limited. However, this is not their primary or preferred source of nutrition.

While stink bugs can adapt to different food sources, their primary diet is plant-based. Their feeding habits on various crops and plants can make them significant agricultural pests, leading to economic losses for farmers. Efforts to manage and control stink bug populations are important for protecting crops and minimizing the damage they can cause.