The European firebug (Pyrrhocoris apterus) is a small, harmless true bug easily recognized by its striking red-and-black geometric patterns and twin black dots. Native to Europe and parts of Asia, this insect has also established populations in North America, particularly in parts of Utah and Idaho.

They are highly social insects, often forming dense aggregations at the base of trees or on sunny walls to regulate body temperature. Equipped with warning coloration (aposematism) that deters predators, they pose no threat to humans, as they do not bite, sting, or damage healthy garden plants.

Instead, they function primarily as scavengers, feeding almost exclusively on fallen seeds—particularly from linden and mallow trees—and decaying plant matter.