A ladybug is a tiny, flying beetle that's usually red with black dots. Some people think it's good luck when a ladybug lands on them.

Scientifically, the ladybug is known as a coccinellid, one of a family of insects that are generally brightly colored and spotted. They are sometimes also called "lady birds" or "lady cows." Gardeners love them because they tend to eat pesky bugs like aphids that feed on plants and flowers. The lady part of their name refers to the Bible's Virgin Mary, named for the red cape she wears in many well-known paintings.

Definitions of ladybug
  1. noun
    small round bright-colored and spotted beetle that usually feeds on aphids and other insect pests
    synonyms: lady beetle, ladybeetle, ladybird, ladybird beetle
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    Adalia bipunctata, two-spotted ladybug
    red ladybug with a black spot on each wing
    Epilachna varivestis, Mexican bean beetle, bean beetle
    introduced into the United States from Mexico; feeds on the foliage of the bean plant
    Hippodamia convergens
    a variety of ladybug
    Rodolia cardinalis, vedalia
    native to Australia; introduced elsewhere to control scale insects
    type of:
    insect having biting mouthparts and front wings modified to form horny covers overlying the membranous rear wings
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