A Black Blister Beetle can secrete a liquid from its body that causes pain and blistering on skin. Physical contact should be avoided. The beetle is almost completely black save for a small spot of yellow on the abdomen that is usually hidden by its wing coverings. This seemingly plain beetle's body may have a blue sheen in certain light. It is often seen on grass or on plants in the summer, minding its own business, and is best left alone.©BeetleIdentification.org
The Black Blister Beetle is typically 0.2 inches to 0.7 inches (7mm to 18mm) in size and has the following descriptors / identifiers: black; hard; shell; blister; blistering; antenna; winged; flying; yellow.
Territorial Area Map (Visual Reference Guide)
The map below showcases (in blue) the states and territories of North America where the Black Blister 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.