Rare evidence about the lives of an ancient group of arthropods has been uncovered in the U.S. The findings of the study are ...

Jerry Hollis took this photo in the mountains above the Valley of what appears to be a common crab spider (Xysticus cristatus ...

A judge in Maryland today sided with the Center for Biological Diversity in a lawsuit arguing that the Maryland Department of ...

Horseshoe crabs are marine arthropods that live primarily in and around shallow ocean waters on soft sandy or muddy bottoms. They occasionally come onto shore to mate. They are commonly used as ...

Coconut crabs are the world’s largest land-dwelling arthropods, growing over three feet long and weighing up to nine pounds, with claws strong enough to crack coconuts and exert force greater ...

They’re also one of the world’s largest arthropods, animals with no backbone, external skeletons, and multiple-jointed appendages. In this crab’s case, those appendages are its 10 legs.

When water temperatures rise to 60 degrees and level off after the last cold snaps of winter, the coastline welcomes ...

Horseshoe crabs have saved countless human lives, and now we should return the favor.” Horseshoe crabs are brown, body-armored arthropods with 10 eyes and a long, spiked tail. Despite their ...

Rare evidence about cyclidan crustaceans has been uncovered in the USA, revealing more about how they behaved.