Centruroides exilicauda

Previously only distinguished by geographic range, the two variants were classified in 1980 as the same species. Subsequently, differences in venom toxicity were recorded, and in 2004, DNA analysis showed them to be separate species. The Baja California bark scorpion is a slender, long-tailed scorpion, and although it is typically sand-colored it appears in darker colors. The Baja California bark scorpion is a scorpion that belongs to the Centruroides genus and exilicauda species and is one of the 529 species of scorpions around today and one of the 41 bark species of scorpions. They are native to the Western parts of North America, including Baja California, California, Arizona, and New Mexico. They have also been seen around the Colorado River. C. exilicauda ranges in length from 1.5 inches to 3 inches. Their tails are 1/16 of an inch wide.