A reduced genome in an island species raises evolutionary questions.

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 ...

What has eight legs, fangs and a whip-like tail? If you're not a fan of spiders, this is one fossil sure to give you the creeps. Scientists from the University of Kansas studying in Myanmar have found ...

Wednesday’s two-episode season finale circled back to the premiere, where a spider of mysterious origin descended from a strand of web, bit Peter, and then scurried away on a classmate’s backpack. In ...