Ladybugs inhabit many places in the world.
Not bugs at all, they are VW-shaped beetles with hard, protective outer wings. Their coloration varies from region to region, but many ladybug species are predominantly red-orange with black spots. There are several species in California, the most prominent of which on Mt. Diablo is Hippodamia convergens . These colorful, insects appear each winter by the hundreds of thousands on Mt. Diablo. Guided by some inner map, they mass in the same sheltered ravines year after year, dispersing in the spring to search for food.