The Darkling Beetle - E. ventricosus is typically 0.2 inches to 0.3 inches (6mm to 10mm) in size and has the following descriptors / identifiers: hairy; small; fuzzy; desert; furry; crawling; black.
It has a typical diet of the following: saltgrass; Russian thistle; wild onion.
Territorial Area Map (Visual Reference Guide)
The map below showcases (in blue) the states and territories of North America where the Darkling Beetle - E. ventricosus may be found (but is not limited to). This sort of data can be useful in seeing concentrations of a particular species over the continent as well as revealing possible migratory patterns over a species' given lifespan. Some species are naturally confined by environment, weather, mating habits, food resources and the like while others see widespread expansion across most, or all, of North America.