Ladybirds (Commonwealth English), also known as ladybugs (American English, Canadian English) or lady beetles (some scientists favor this) are a family, Coccinellidae ("little sphere"), of beetles; the name is thought to allude to the Blessed Virgin Mary in the Catholic faith. Ladybirds are found worldwide, with over 4,500 species described, more than 450 native to North America alone. Ladybirds are small insects, ranging from 1 mm to 10 mm (0.04 to 0.4 inches), and are usually yellow, orange, or red with small black spots on their carapace, and black legs, head and feelers. As the family name suggests, they are usually quite round in shape. Because they are useful, colorful, and harmless to humans, ladybirds are typically considered cute even by people who hate most insects.
http://en.wikipedia.org/wiki/Ladybird 
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