Spotted Cucumber Beetle

What it is

The spotted cucumber beetle (Diabrotica undecimpunctata) is a beetle native to North America. The beetle is also a major agricultural pest insect of North America (see also cucumber beetle).

Where and when to find it

Habitat

Located throughout most of the United States, especially in gardens, farms, and fields where vegetables grow.

How to find it

Look for them on the leaves and flowers of squash, cucumbers, beans, and corn plants. They are quite small but easy to spot with their bright colors.

Best time of day

Daytime, spring through fall.

How it lives

What it eats

Leaves, flowers, and fruits of many plants, especially cucumbers and beans.

What eats it

Birds, spiders, predatory insects.

Worth knowing

• The larvae of this beetle live in the soil and eat plant roots.
• They are sometimes called 'southern corn rootworms' in their larval stage.
• Females can lay hundreds of eggs during their lifetime.
• Scientists have given these beetles a very long scientific name!
• They have antennae that are longer than their heads.
• Their bright color might be a warning to predators that they don't taste good.

Why it matters

Spotted Cucumber Beetles help break down plant material and can be food for other insects and birds.