Above, Cryptolaemus montrouzieri, the Mealy bug destroyer. This is the larva form. This wonderful creature eats aphids and scale when mealybugs are scarce. It is endemic to New South Wales, Australia and was brought to California in 1891 by Albert Koebele to control the Cottony Cushion Scale, a serious pest of Citrus. The adult form is a small dark brown beetle with an orange-y head.