American Nursery Web Spider

What it is

Pisaurina mira is a species of spider in the family Pisauridae, the members of which are commonly called "nursery web spiders." They are similar to wolf spiders (Lycosidae) and to the long-legged water spiders (Trechaleidae). The best way to distinguish the Pisauridae from other Families is by observing their eye patterns.

Where and when to find it

Habitat

Common across the eastern United States, often found near water, in gardens, fields, and forests.

How to find it

Look for them on plants near water, in tall grass, or on fences. They often sit still, waiting for prey, or you might spot a female carrying her large, round egg sac.

Best time of day

Daytime, especially during warmer months.

How it lives

What it eats

Insects like flies, crickets, and other small invertebrates.

What eats it

Birds, lizards, wasps, and larger spiders.

Worth knowing

• The female builds a special silk 'nursery web' just before her babies hatch, to protect them.
• They are quite large spiders, but not dangerous to humans.
• They don't build a sticky web to catch food, they hunt actively.
• Sometimes they are called 'fishing spiders' because they are often near water.
• They can even walk on the surface of water!
• The male performs a special dance to impress the female.

Why it matters

These spiders are important predators of insects, helping to keep insect populations in balance. They are also food for larger animals.