The Ruteline genus Chrysina, or jewel scarabs (not to be confused with jewel beetles which are a different family), is a large genus of brightly colored, often metallic iridescent species, ranging from the southwestern edge of the United States as far south as Ecuador. The genus includes all the species formerly known as Plusiotis. They are typically between 15-35mm in length, and are nocturnal in habits, coming readily to lights. The larvae live in rotting logs,...