An ancient ancestor of spiders and relatives doubled its genome about 400 million years ago, setting the stage for the ...

The knotty sea spider, Pycnogonum litorale, is not actually a spider, but it does represent a significant early branch in the genetic family tree that includes spiders, as well as scorpions, ticks and ...

Introduction -- The "hardware" of web-building spiders: morphology, silk, and behavior -- Functions of orb web designs -- Putting pieces together: tradeoffs and remaining puzzles -- The building ...