Eleodes armatus, commonly known as the armored stink beetle, is a flightless insect found in arid regions of North America. It is notable for its hardened exoskeleton, which provides protection, and its ability to release a pungent odor as a defense mechanism. The beetle's role as a decomposer is crucial in its ecosystem.

Eleodes armatus LeConte, commonly known as the desert stink beetle, is native to North America. Its geographical distribution primarily includes the arid and semi-arid regions of the western United States, particularly within states such as California, Nevada, Arizona, and New Mexico. The species is also found in parts of northern Mexico.

Eleodes armatus typically inhabits desert and semi-desert environments characterized by dry, sandy, or rocky substrates. The regions usually have a warm to hot climate with low annual precipitation. These beetles are often found in areas with sparse vegetation, including grasslands and scrublands, where they can burrow and find shelter.

The ecological niche of Eleodes armatus involves a role as a detritivore, primarily feeding on decomposing organic material, including plant matter and animal detritus. This activity contributes to nutrient cycling within its ecosystem. The beetle's ability to secrete a noxious chemical from its abdomen serves as a defense mechanism against predators, an adaptation well-suited to its open and exposed habitat.