A crab spider, Misumena vatia ... The pirate spiders, of which there are four UK species in the genus Ero, go onto another spider's web and mimic the behaviour of its prey to lure the spider closer.

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

What is a Japanese spider crab? They may look like something from a 1950s sci-fi film, but Japanese spider crabs are gentle giants. And giants they are. Of the 60,000 species of crustaceans on ...