The Darkling Beetle - Argoporis spp. is typically 0.3 inches to 0.5 inches (10mm to 13mm) in size and has the following descriptors / identifiers: black body and head; brown legs; pits; lines on back; smooth pronotum; black antennae; soil.
Territorial Area Map (Visual Reference Guide)
The map below showcases (in blue) the states and territories of North America where the Darkling Beetle - Argoporis spp. 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.