The Stink Bug That Bites: Understanding the Brown Marmorated Stink Bug’s Feeding Habits

The Stink Bug That Bites: Understanding the Brown Marmorated Stink Bug's Feeding Habits


The Brown Marmorated Stink Bug (BMSB), scientifically known as Halyomorpha halys, is an invasive species that has become a major agricultural pest in many parts of the world. Originally native to Asia, it was unintentionally introduced to the United States in the late 1990s and has since spread rapidly. Besides causing significant damage to crops, the BMSB also poses a nuisance to homeowners due to its foul odor and the ability to bite humans. Understanding the feeding habits of this stink bug is crucial for effective pest management. In this article, we will delve into the brown marmorated stink bug's feeding habits and answer frequently asked questions about this pesky insect.

Feeding Habits:

The BMSB is primarily a herbivorous insect, feeding on a wide range of plant species. It is known to target fruits, vegetables, and ornamental plants. Unlike many other stink bugs, the BMSB feeds on both the fruiting structures and the foliage of plants. It uses its piercing-sucking mouthparts to puncture the plant tissue and extract sap, causing damage to the plant and reducing crop yields.

During its feeding process, the BMSB injects saliva into the plant, which facilitates the breakdown of plant cells and helps the bug to ingest the sap more easily. This saliva also contains digestive enzymes that further aid in nutrient extraction. The feeding damage caused by the BMSB often leads to distorted or discolored fruits, stunted growth, and reduced market value for agricultural produce. Additionally, the BMSB's feeding activity can render fruits and vegetables unmarketable due to the unsightly appearance caused by feeding punctures.

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BMSB Bites on Humans:

Apart from its agricultural impact, the BMSB has gained notoriety for its ability to bite humans. However, it is essential to understand that the BMSB does not bite humans to feed. Instead, it uses its sharp mouthparts to pierce the skin in a defensive mechanism when it feels threatened. The bite is often described as a painful, stinging sensation, and it may result in localized redness, swelling, and itching. While the bite is not considered dangerous or venomous, it can be a cause of discomfort and irritation.

Frequently Asked Questions:

1. How can I identify a Brown Marmorated Stink Bug?
The BMSB is approximately half an inch long, with a shield-shaped body. It has a distinctive brown mottled appearance on the back, alternating light and dark bands on its antennae, and a light-colored underside.

2. Which plants are most susceptible to BMSB feeding damage?
The BMSB feeds on a wide variety of plants, including fruits like apples, peaches, and pears, as well as vegetables such as tomatoes, peppers, and beans.

3. How can I prevent BMSB infestations in my garden?
Using fine mesh netting or row covers can help protect plants from BMSB infestations. Additionally, practicing good garden hygiene by removing plant debris and weeds can reduce the bug's habitat.

4. Are there any natural predators of the BMSB?
Yes, there are several natural predators, including birds, spiders, parasitic wasps, and praying mantises, which help in controlling BMSB populations.

5. Can the BMSB overwinter in homes?
Yes, during colder months, the BMSB seeks shelter in homes and other structures to overwinter. Sealing cracks and crevices in buildings can help prevent their entry.

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6. Can the BMSB transmit diseases to humans?
No, there is no evidence to suggest that the BMSB can transmit diseases to humans.

7. What should I do if I get bitten by a BMSB?
Clean the affected area with soap and water, apply a cold compress to alleviate swelling, and use over-the-counter anti-itch creams if necessary.

8. Are chemical pesticides effective against BMSB?
Chemical pesticides can be effective against BMSB, but it is essential to choose products specifically labeled for stink bug control and follow the instructions carefully.

9. Are there any organic methods to control BMSB?
Yes, organic methods such as the use of insecticidal soaps, neem oil, or pyrethrin-based sprays can help control BMSB populations.

10. How can I report a suspected BMSB sighting?
Contact your local agricultural extension office or state department of agriculture to report any suspected BMSB sightings and seek advice on control measures.


Understanding the feeding habits of the Brown Marmorated Stink Bug is vital for effective pest management. By learning about its preference for various plants, its defensive biting behavior, and implementing preventive and control measures, we can minimize the damage caused by this invasive species. By staying informed and taking appropriate action, we can protect our crops and mitigate the nuisance caused by the BMSB.

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