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Darkling Beetles (Stinkbugs)
(Family Tenebrionidae, Genus Eleodes)

Invertebrates Around Las Vegas, Wildlife Around Las Vegas
Tenebrionid Beetle (Stinkbug)
Small beetle with rough-hairy back (Virgin Peak).

General: Darkling Beetles (Family Tenebrionidae), also called Circus Beetles and Stinkbugs, are fairly common beetles of the desert and are often seen walking across roads and trails. When threatened, these beetles defend themselves by lifting their rear end into the air and spraying noxious and burning chemicals (i.e., the stink in "stinkbug") into the mouth and face of an attacker.

There are several genera of Darkling beetles around Las Vegas; each is a different size and surface texture. Some are small (1/2-inch long) with a rough back, some are large (3/4-inch long) with grooved backs, some are hairy, but the ones most often seen are large (about 1-inch long) with smooth backs.

Tenebrionid Beetle (Stinkbug)

Large beetle with grooved back (Mojave National Preserve).

Tenebrionid Beetle (Stinkbug) Medium-sized beetle with smooth, striated back (Mt. Charleston).
Tenebrionid Beetle (Stinkbug) This small species has small grooves with little dimples in the groves. This specimen survived predation by Burrowing Owls, but its buddies were not so lucky.
Darkling Beetles (Family Tenebrionidae) Darkling Beetles (Family Tenebrionidae)
Darkling Beetles (Family Tenebrionidae) Darkling Beetles (Family Tenebrionidae)
Darkling Beetles (Family Tenebrionidae) Darkling Beetles (Family Tenebrionidae)
Darkling Beetles (Family Tenebrionidae) Darkling Beetles (Family Tenebrionidae)

Note: All distances, elevations, and other facts are approximate.
copyright; Last updated 120614

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