Red-Shouldered Bug Facts & Information

What do red-shouldered bugs look like?

Red-shouldered bugs (Jadera haematoloma) are small insects, typically measuring about 1/2 inch in length. They have a distinct black body with bright red markings along the edges of their thorax and behind their eyes, giving them their name. Their wings are dark with a reddish tint, and they have elongated, narrow bodies.

What do red-shouldered bugs eat?

Red-shouldered bugs primarily feed on seeds, particularly from trees like the boxelder, goldenrain tree, and other maples. They pierce the seeds with their mouthparts to extract the sap. While they primarily consume seeds, they may also feed on other plant material if their preferred food sources are scarce.

What sort of habitat do red-shouldered bugs live in?

These bugs are commonly found in areas where their host trees are present, such as woodlands, parks, and residential areas. They are often seen on or near the ground, especially around the bases of trees or under fallen leaves. In colder weather, they may seek shelter in cracks and crevices of buildings, where they can become a nuisance.

How do red-shouldered bugs commonly behave?

Red-shouldered bugs are generally harmless to humans but can be a nuisance when they enter homes in large numbers seeking warmth during cooler months. They are social insects, often found in large groups, especially in the fall. They are not aggressive and do not bite, but they can sometimes emit a foul odor when disturbed.

Did you know this about red-shouldered bugs?

Red-shouldered bugs are often mistaken for boxelder bugs due to their similar size and behavior, but they can be distinguished by the red markings on their shoulders. Unlike some other true bugs, red-shouldered bugs rarely cause significant damage to plants or crops, as they mainly feed on seeds rather than the plants themselves. Their tendency to congregate in large numbers makes them more noticeable, especially in the late fall and early spring when they are most active.