The Ladybug: Habitat, Life Cycle And Diet

Where do ladybugs live? Its habitat. The ladybug only seeks shelter during the winter: in the garden or in the house, in a pile of wood, a low dry stone wall, in the cracks of a wall, under a pile of dead leaves, in the moss or under the bark.

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How does the ladybug develop?

Its life cycle

The ladybug goes through 4 stages of development: The egg: after mating in the spring, the female lays more than a hundred yellow eggs on a leaf populated with aphids. The larva: after 4-7 days, the eggs hatch to give birth to blue larvae.

How old can the ladybug become?

The ladybug lives about 12 months. Although in general there is a misconception that the number of dots of ladybugs indicates the age of the beetle, this is not true. The number of dots is characteristic for each species and does not change during the life of the beetle.

During hibernation, ladybugs draw energy from their fat reserves. A ladybug’s spots fade as it ages.

The seven-spot ladybug is the best known ladybug. It grows 5.2 to 8 millimeters long and has a strongly curved and round body. Its wings are colored red and have a total of seven black dots. These are symmetrically arranged. The head, the chest as well as the underside of the beetle are black. In other species of ladybugs, the body color can also be light beige, yellow, orange, brown, pink or red. On the black head of the seven-spotted ladybug there are two white dots next to the black compound eyes (compound eyes are composed of several small eyes).

Where does the ladybug live?

The seven-spot ladybug is widely distributed in Europe, Asia, North Africa and North America. It inhabits both open and wooded areas. However, wherever the ladybug lives, aphids must be present, as it needs them for food.


The seven-spot ladybug

The seven-spot ladybug is the best known ladybug. Its upper wings are bright red and each has three black dots. The seventh dot is centered on the upper edge of the wings. The size and shape of the dots is always slightly different.

The Asian ladybug

It eats a good five times as many aphids as the seven-spot ladybug. The Asian species also reproduces very quickly and is therefore increasingly displacing the seven-spotted ladybug.

How do you tell the difference between seven-spotted and Asian ladybugs?

The Asian ladybug does not have seven points, but 19. On the head it also has a typical black marking in the form of the letter “M”. The seven-spot ladybug has no pattern on its head.

Abilities and senses

How fast are ladybugs?

Ladybugs fly as fast as 60 mph. With enough tail wind, they can cover distances of 120 km at a time. They are often carried by the wind, but have difficulty changing direction because their wings are too weak to do so

How does a ladybug behave when it is threatened?

The red color alone is a warning signal to other animals that the ladybug is using to say, “Watch out, I’m poisonous!” For example, when it feels threatened by an ant, the ladybug secretes a yellow, unpleasant-smelling liquid that drips from its knee joint. Ladybugs also play dead when they feel threatened.

Ladybugs life in winter

The adult beetles often overwinter together in large groups under rocks, bark, tufts of grass, and in moss. However, they also often seek shelter in homes, basements, and window frames.


Ladybug females lay up to 400 eggs in their lifetime. These are 0.4 to 2 mm in size. Females seek out plants where there are many aphids and stick them to the undersides of leaves.

Development from larva to beetle

Development from egg to adult red lady beetle takes 30-60 days. The yellow eggs first develop into 1.5-15 mm long, voracious larvae. They molt three to four times.

After a few weeks, they stop feeding and attach their rear end to a plant part using a sticky liquid. They become rigid and immobile. They are said to “pupate.” Inside, the ladybug develops. After six to nine days, the finished beetle hatches.

Get rid of ladybugs in the yard or garden.

Sprinkle diatomaceous earth around your garden. Diatomaceous earth is an effective way to kill ladybugs before they even arrive in your garden.

Why are there yellow ladybugs?

Their yellow color signals toxicity or bad taste to predators. The spots appear more clearly. The young ladybug has acquired its definitive coloring.

Which ladybugs are dangerous ?

The Asian ladybug has parasites in its eggs, so they can cause the death of other insects if they ingest them.

Do ladybugs sleep?

They can’t stand the cold, so they try to get inside. Rest assured, during the winter, they sleep, do not eat and do not reproduce. Although their presence is not “harmful” to humans, it is certainly annoying.

How to know the age of a ladybug ?

Contrary to popular belief, the number of dots does not determine the age of the insect since its life expectancy does not exceed 3 years. The patterns are mainly used to differentiate the species. Thus, ladybugs that do not have the same number of dots will not reproduce together.

Why am I being invaded by ladybugs ?

The only reason why ladybugs cluster on our houses is because of the heat. They can’t stand the cold, so they try to get inside. Rest assured, during the winter, they sleep, do not eat and do not reproduce.

Why are there a lot of ladybugs?

Normally, ladybugs spend the winter in a dormant state, but the heat of the house can wake them up prematurely. During the sunny days of winter and early spring, driven by the desire to get out, they are attracted to windows and doors.

How to treat CPB with white vinegar?

Mix 1 liter of vinegar with 0.5 liter of water and place the mixture in a sprayer. With 1.5 liters of weed killer, it is possible to treat 10m². Because it is natural, you can use white vinegar everywhere in the garden, including the vegetable garden!

How are ladybug eggs ?

From the egg to the adult, life cycle of the ladybug

The adults lay their eggs in the spring, between April and June, on a plant carrying aphids. The eggs, yellow, oval and 1 or 2 mm long, are laid in groups of 10 or 20 (even more in some species), on or under the leaves.

Why are there black ladybugs?

Pannier then activates other genes that collectively ensure the production of black pigment by these cells and thus the formation of the famous black dots (in “red” ladybugs) or the black background (in “black” ladybugs).

How to differentiate ladybugs ?

Unlike the native ladybugs with their black legs, Harmonia axyridis can be distinguished mainly by its orange or brown legs. It has a wide variety of coats: black with large red spots or red with black spots, for example.

Do Asian ladybugs bite?

The well-known Asian ladybug (Harmonia axyridis), for example, which can have anywhere from 0 to 22 spots. … Did you know that ladybugs can bite? They don’t do it very often, and the bite is usually more startling than painful, but they can.

How do you get rid of a black ladybug?

Vacuuming is the most effective tool for removing ladybugs from a home. When finished, seal and dispose of the bag. Outside, the use of pesticides is not recommended… Their corpses, possibly in very large numbers, will attract other insects as they rot.

Do black ladybugs bite?

Ladybugs can eat up to 500 aphids in a single day. … Ladybugs are harmless to us (even in houses). They don’t sting, they don’t usually bite, they don’t transmit any disease

Are yellow ladybugs dangerous ?

There is no way to eradicate them. They put themselves in a corner and don’t move again until February. There is no need to panic too much: the Asian ladybug is certainly an invader, but it is not dangerous for humans. It feeds on aphids, up to 270 per day.

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