Coccinellidae is a family of beetles, known variously as ladybirds (UK, Ireland, Australia, Pakistan, South Africa, New Zealand, India, Malta, parts of Canada), or ladybugs (North America). Scientists increasingly prefer the names ladybird beetles or lady beetles, as these insects are neither birds nor bugs. Lesser-used names include ladyclock, lady cow, and lady fly.

http://en.wikipedia.org/wiki/Coccinellidae