Despite their smelly reputation, stink bugs are one of the most intriguing creatures. The origin of their name is fairly straightforward: when threatened or crushed, these insects release a pungent odor that has become their signature calling card. From their surprising role in the ecosystem to their unexpected abilities, stink bugs are more than just a nuisance for homeowners.

Join us as we dive into the world of these insects – exploring everything from stink bug facts, what do stink bugs smell like, what do stink bugs eat, do stink bugs fly, and more.

Why do stink bugs stink?

Stink bugs emit a distinctive odor as a defense mechanism, deterring predators and signaling danger to other stink bugs. What a stink bug smells like can be described as pungent, resembling that of coriander, cilantro, or, in some cases, a strong sulfurous aroma similar to rotten vegetables or a skunk. This odor is produced through glands located between the first and second pair of legs and can be released when the bugs feel threatened or are crushed.

The duration of the stink bug’s smell can vary depending on the surface it comes in contact with and the amount released. When released into the air, the smell might dissipate relatively quickly, especially outdoors. However, if released onto fabrics or indoors, the smell could linger for hours or even days, requiring thorough cleaning to eliminate.

stinkbug on stone 

Stink bugs in America

The history of stink bugs in America, specifically the Brown Marmorated Stink Bug, began with their introduction from Asia into the United States. The first documented presence was in the late 1990s in Pennsylvania. Since then, stink bugs have spread significantly and can now be found across many states.

However, one stink bug fact is that they are primarily concentrated in the Mid-Atlantic region of the US, including states like Pennsylvania, Maryland, Virginia, and West Virginia. These areas provide suitable climates and abundant agricultural crops that support what stink bugs eat. Their presence has also been noted in significant numbers in regions such as the Pacific Northwest and parts of the Midwest.

More than a bad smell

Stink bugs play important roles in their ecosystems, so what do stink bugs do? Their feeding activities can contribute to the ecological balance by controlling the population of certain plant species and acting as prey for predators. Their predator-prey relationship is crucial for maintaining the balance within these ecosystems. Additionally, some species of stink bugs are actually beneficial to agriculture because they prey on harmful pests.

Regarding their ability to fly, stink bugs are equipped with wings, which enables all stink bugs to fly. They have a pair of membranous wings beneath their distinctive shield-shaped back, which they use for flying. Stink bugs' flying capabilities allow them to migrate from one area to another in search of food or favorable breeding conditions and to escape from predators. Stink bugs are known to fly to buildings and homes in large numbers, especially in the fall, seeking warmth and shelter for overwintering.

stinkbug on apple 

Stink bug menu

Stink bugs have a diverse diet, primarily feasting on a wide array of plants both inside and outside of the home. What stink bugs eat includes a variety of fruits like apples, peaches, blackberries, and grapes, as well as vegetables such as tomatoes, green beans, peppers, and sweet corn. Stink bugs also eat crops like soybeans and cotton alongside various plants and weeds. This herbivorous stink bug behavior positions them as significant agricultural pests due to the extensive damage they can cause to these plants.

On the other hand, stink bugs themselves are preyed upon by a host of predators. Birds, bats, spiders, and predatory insects such as wasps and praying mantises all feed on stink bugs, utilizing them as a food source within their natural ecosystems.