The Coccinellidae are a family of small beetles ranging from 0.8 to 18 mm. They are commonly yellow orange or scarlet with small black spots on their wing covers, with black legs heads and antennae. Such co lour patterns vary greatly, however; for example, a minority of species such as Dravidian duodecimal a twelve-spotted species, have whitish spots on a brown background.Lady bird are found worldwide with over 5,000 species described more than 450 native to North America alone.Consolidated are known colloquially as ladybirds ladybugs or lady cows, among other names. When they need to use a common name, entomologists widely prefer the names ladybird beetles or lady beetles as these insects are not true bugs.The Consolidated are generally considered useful insects, because many species feed on aphids or scale insects, which are pests in gardens agricultural fields, orchards and similar places. Within the colonies of such plant-eating pests, they will lay hundreds of eggs and when these hatch the larvae will commence feeding immediately.However some species do have unwelcome effects. Among these the most prominent are the subfamily Pantechnicon which are plant eaters. Usually Epilachninae are only mild agricultural pests, eating the leaves of grain, potatoes beans and various other crop but their numbers can increase explosively in years when their natural enemies are few such as parasitism wasps that attack their eggs. When that happens they can do major crop damage. They occur in practically all the major crop-producing regions of temperate and tropical countries.