The Two-lined Leather-wing Beetle is typically 0.2 inches to 0.3 inches (6mm to 9mm) in size and has the following descriptors / identifiers: flying; twin black spots; two dots; firefly; pollinator; beneficial; blister.
Territorial Area Map (Visual Reference Guide)
The map below showcases (in blue) the states and territories of North America where the Two-lined Leather-wing Beetle 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.