There are about 5,000 different
species of ladybugs in the world. These much loved critters are also known as
lady beetles or ladybird beetles. They come in many different colors and
patterns, but the most familiar in North America is the seven-spotted ladybug,
with its shiny, red-and-black body.
The name "ladybug" was
created by European farmers who prayed to the Virgin Mary when pests began
eating their crops. After ladybugs came and wiped out the invading insects, the
farmers named them "beetle of Our Lady." This eventually was
shortened to "lady beetle" and "ladybug."
In many cultures, ladybugs are
considered good luck. Most people like them because they are pretty, graceful,
and harmless to humans. But farmers love them because they eat aphids and other
plant-eating pests. One ladybug can eat up to 5,000 insects in its lifetime!
Most ladybugs have oval,
dome-shaped bodies with six short legs. Depending on the species, they can have
spots, stripes, or no markings at all. Seven-spotted ladybugs are red or orange
with three spots on each side and one in the middle. They have a black head
with white patches on either side.
Ladybugs are colorful for a
reason. Their markings tell predators: "Eat something else! I taste
terrible." When threatened, the bugs will secrete an oily, foul-tasting
fluid from joints in their legs. They may also play dead. Birds are ladybugs'
main predators, but they also fall victim to frogs, wasps, spiders, and
dragonflies.
Ladybugs are happy in many
different habitats, including grasslands, forests, cities, suburbs, and along
rivers. Seven-spotted ladybugs are native to Europe but were brought to North
America in the mid-1900s to control aphid populations.
Ladybugs are most active from
spring until fall. When the weather turns cold, they look for a warm, secluded
place to hibernate, such as in rotting logs, under rocks, or even inside
houses. These hibernating colonies can contain thousands of ladybugs.
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