Usually, when a small group of animals becomes isolated on an island, they lose genetic diversity. This puzzling little spider flipped the script.

A spider on the Canary Islands lost half its DNA but gained more genetic variety. Scientists say this changes how we ...

In late summer and fall, these small orange arachnids will stretch their circular webs across trees and porches in your yard ...

Scientists discovered a new kind of trapdoor spider under California’s sand dunes, showing how isolation helps spiders evolve ...