The quintessential “good bug,” ladybugs (aka ladybird beetles) are the poster child of the beetle world. Everyone knows that ladybugs eat aphids and other “bad bugs” (especially scale insects) and should be welcomed in the garden.
Actually, not all ladybug species are red. Some species are orange, yellow, white, black, brown, or gray. And not all ladybug species eat aphids, although most do. Some are even agricultural pests, such as the infamous Mexican Bean Beetle. Still, most ladybugs are red, and they eat vast numbers of aphids, as well as scales, mealy bugs, leaf hoppers, mites and other soft-bodied insects and their eggs.