Insects

Seven-spot ladybird: The aphid's nightmare

Science card

Classification
Helpful beetle (aphid hunter)
Period
Present day (ladybird family tens of millions of years old)
Fossil sites
Europe, Asia and North America
Size
Body length 0.007–0.01 m
Diet
Meat-eating

The seven-spot ladybird is probably the beetle children know and love best: a small, round, red body with a few black spots, looking both cute and lucky. But do not be fooled by its adorable looks — it is the aphid's worst nightmare in any garden. Let's meet this little helper.

Its body

At just fingernail size, the ladybird usually wears a red background studded with black spots, and the commonest "seven-spot" carries seven spots on its back. That bold red-and-black coat is not just for show — it is a warning colour, telling predators: "I taste terrible, keep away!" When threatened it also oozes bitter yellow fluid from its leg joints — called "reflex bleeding" — and the taste puts predators off.

Where it lives and what it eats

The ladybird is a beneficial meat-eater: both the adult and the larva eat aphids, and one ladybird can devour thousands of aphids in its life, truly a "guardian" of the garden. Hundreds huddle together to overwinter, then scatter in spring when the weather warms, laying eggs right beside aphid colonies — so the newly hatched larvae have food the moment they open their eyes.

A note for grown-ups

You could look for a ladybird in the garden with a child and count the spots on its back. Then tell your child it is a little helper that "guards" our plants. In such a gentle way, a child can come to love and respect our beneficial insects.

Scientific sources

Observe Seven-spot Ladybird on the 3D stage