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Ladybug

Ladybug is the common name for beetles in the family Coccinellidae, also called ladybird beetles or lady beetles.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 27, 2026|2 min read| Fact-checked

Ladybug is the common name for beetles in the family Coccinellidae, also called ladybird beetles or lady beetles. They are known for their rounded, often brightly coloured bodies and for eating plant pests such as aphids, which makes many species beneficial in gardens and agriculture. The group includes about 5,000 species worldwide and is not a true bug.

Taxonomy and naming

Ladybugs are members of the beetle family Coccinellidae in the order Coleoptera. The common name comes from the medieval phrase “beetle of Our Lady,” referring to the Virgin Mary.

Appearance and behaviour

Ladybugs are usually small, rounded or oval beetles with dome-shaped backs and short legs. Their colour and spot patterns vary widely by species, and some species may have stripes or no markings.

Diet and ecological role

Most ladybug species prey on pests such as aphids, scale insects, mites, and whiteflies. Because of this, they are widely regarded as beneficial insects in gardens and agriculture.

Life cycle and habitat

Ladybugs lay eggs on leaves, and their larvae develop through a pupal stage before becoming adults. They live in diverse habitats and many adults overwinter in sheltered places or in groups.

Key facts

  • Ladybugs are beetles, not true bugs, and belong to the family Coccinellidae.
  • Many species eat aphids, mites, scale insects, and other soft-bodied pests.
  • Ladybugs are widely distributed and occur in many habitats, including gardens, forests, grasslands, and urban areas.
  • Most species are harmless to humans and are considered beneficial insects.
  • The name is linked to medieval European devotion to the Virgin Mary.
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Canadian context

Ladybugs are familiar beneficial insects in Canadian gardens and agriculture, where they help reduce aphid and other pest populations.

Frequently asked questions

Are ladybugs actually bugs?
No. Ladybugs are beetles in the family Coccinellidae, not true bugs in the order Hemiptera.
Why are ladybugs considered helpful?
Many species eat aphids and other plant pests, so they help protect crops and gardens.
How many species of ladybugs are there?
There are about 5,000 species worldwide.
What do ladybugs eat?
Most feed on soft-bodied insects such as aphids, mites, scale insects, and whiteflies; some species also eat plant material or pollen.
Where do ladybugs live?
They occur in many habitats, including gardens, forests, grasslands, suburbs, and riverbanks.
Why are they called ladybugs?
The name comes from “beetle of Our Lady,” a medieval reference to the Virgin Mary.

References

  1. National Geographic Kids — https://kids.nationalgeographic.com/animals/invertebrates/facts/ladybug
    Supports: Common name, diet, habitat, lifespan, and general description.
  2. San Diego Zoo — https://animals.sandiegozoo.org/animals/ladybug
    Supports: Taxonomy, number of genera/species, and common names.
  3. U.S. National Park Service — https://www.nps.gov/articles/000/ladybug.htm
    Supports: Ladybugs are beetles, not true bugs; common naming history.
  4. Britannica — https://www.britannica.com/animal/ladybug
    Supports: Family Coccinellidae, approximate number of species, and name origin.
  5. Britannica Kids — https://www.kids.britannica.com/kids/article/ladybug/571160
    Supports: Appearance, size, colour variation, life cycle, and winter behaviour.
  6. University of Maryland Extension — https://extension.umd.edu/resource/ladybugs-or-ladybird-beetles
    Supports: Beneficial role, pest diet, and North American context.