Despite their name, horseshoe crabs—bizarre, ancient aquatic critters—don’t look like horseshoes and they’re definitely not crabs. They’re arachnids. Just like spiders, scorpions ...

The bright contrast of yellow and black on a spider may make it look very scary, but most do more good than harm. Here's how to identify friends and foes.

Horseshoe crabs first developed 540 million years ago in the Paleozoic era, more closely related to arachnids than crabs. The amazing arthropods lived through the age and extinction of dinosaurs ...

One of the many kind-of crabs -- horseshoe crabs -- is a key figure in another mystery: the Case of the Land-Living Arachnids. Horseshoe crabs first appeared in the fossil record about 450 million ...

The new species is distantly related to arachnids like horseshoe crabs and scorpions — but in appearance, it’s a far cry from any spider. The lomankus edgecombei creature, ...

Crab spiders nab prey with 'catch of the day' approach. If you cultivate and/or have sunflowers, daisies, or other showy, disk-shaped flowers in your garden or flower beds or have a patch of these ...

Maine fishermen, chef aim to reduce invasive green crab population 04:28. Just days ago, invasive Joro spiders sent New Yorkers into a frenzy amid news that the large arachnids that can soar with ...

The arachnids are known as crab spiders because of the stance they take while perched on plants, according to a news release from Ecuador’s National Institute of Biodiversity.

According to a new study from the University of Georgia, the joro spider −a palm-size bright yellow, blue-black and red arachnid− would rather be left alone than attack a human.

Horseshoe crabs gather on Delaware Bay beaches to spawn from May through early June, with the most seen during new and full moon high tides. The next new moon is May 27. The next full moon is June 11.