What Do Ladybugs Eat?

Written by Cindy Rasmussen
Updated: November 19, 2021
Image Credit Mironmax Studio/Shutterstock.com
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What do Ladybugs Eat
Ladybugs predominately eat aphids, which are small bugs

A-Z-Animals.com

Ladybugs are small round red insects with black spots. They can be other colors, like orange, yellow and black, but the most familiar species is the seven-spotted ladybug which is red. Ladybugs are sometimes called ladybird beetles or lady beetles; they got their name from farmers who would pray to the Virgin Mary for protection for their crops. When aphids and other pests invaded their crops, ladybugs came in and ate the bugs and saved the crops. Ladybugs are still farmer’s best friends and provide an important role in controlling aphids and other bugs. So we know they eat aphids, what else do ladybugs eat?

How do Ladybugs hunt?

Caucasian red seven-spotted ladybug with black and white spots on the elytra, long legs, antennae has risen on legs in green inflorescence
Caucasian red seven-spotted ladybug with black and white spots on the elytra, long legs, antennae has risen on legs in green inflorescence

Sergey/Shutterstock.com

Out in a field of alfalfa a colony of 1,000 ladybugs munches away on tiny aphids that are on the leaves. Aphids are wingless, slow-moving bugs so there is no complex hunt involved. No hiding waiting for an unsuspecting victim to wander by. The ladybug essentially flies in, finds a spot full of aphids and dinner is served. Aphids will use gravity to fall off the leaves to escape, but since ladybugs can fly they can still typically find them.

What do Ladybugs eat?

Animals With Exoskeletons-ladybug
A ladybug on a daisy flower. Female ladybugs can eat as many as 75 aphids in one day, they also like to eat scale, mealybugs, and spider mites

iStock.com/sebastianosecondi

Ladybugs primarily eat aphids, a type of small, wingless bugs. This is across species, habitat and location. But with 5,000 species of ladybugs there is some variation. There are some species that feed on pollen and nectar, other species feed on plant parts like the stems. Some species, if they can’t find aphids or aphids are absent, can feed on fungus and mildew. Another group will feed on mites. Most ladybugs will eat insect eggs if they come across them as well.

A complete list of what Ladybugs eat:

  • Aphids
  • Plant-eating bugs
  • Mites
  • Pollen
  • Nectar
  • Mealybugs
  • Insect eggs
  • Mildew
  • Fungi
  • Fruit flies
  • Plants (some species)

How much do Ladybugs eat?

Adult ladybugs eat all day long, they are less active at night, and can consume up to 5,000 aphids in their lifetime! The lifespan of a ladybug is 1-2 years.

What do baby ladybugs (larvae) eat?

Ladybug larvae and eggs on a leaf.
Ladybug larvae and eggs on a leaf.

QiuJu Song/Shutterstock.com

Mother ladybugs lay their eggs next to aphids so when the larvae hatch they are essentially hatched inside a full service restaurant. The aphids are right there and the larvae can begin feeding right away and do they ever. They consume large amounts of aphids over the next few weeks before entering the pupal stage and then the adult stage. Ladybug larvae can consume 300-400 aphids over a 2-3 week period!

What eats ladybugs?

Their bright colors and spots are a reminder to predators that, like a bad tasting jelly bean, they taste awful, so don’t eat them! They have glands in their joints that give off an offensive smell and yet some animals still prey on the ladybugs. What eats ladybugs? The most common predator is birds that can swoop down and eat them, but depending on their habitat they can be eaten by frogs, dragonflies and spiders.

What do ladybugs eat in space…wait, what?

NASA performed an experiment with ladybugs and aphids in space! In 1999, a group of astronauts brought four ladybugs with them on the space shuttle to see how gravity would affect the aphids ability to escape from the ladybugs. On Earth, aphids simply fall off leaves, using gravity, to escape from hungry ladybugs. What would happen in space, in a zero gravity environment? Teachers and students were encouraged to do similar experiments in their own classrooms and compare results. Did the aphids adapt? Not in this experiment. The ladybugs survived and ate the aphids. But the aphids did leave a legacy of being the first aphid astronauts!

Armyworm - ladybug on green leaf
Ladybug sitting on a flower leaf on a warm spring day. Ladybugs are beneficial insects that eat both armyworm eggs and young larvae.
Mironmax Studio/Shutterstock.com
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About the Author

I'm a Wildlife Conservation Author and Journalist, raising awareness about conservation by teaching others about the amazing animals we share the planet with. I graduated from the University of Minnesota-Morris with a degree in Elementary Education and I am a former teacher. When I am not writing I love going to my kids' soccer games, watching movies, taking on DIY projects and running with our giant Labradoodle "Tango".

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