Spiders
Araneae
Summary 2
Spiders (order Araneae) are air-breathing arthropods that have eight legs and chelicerae with fangs that inject venom. They are the largest order of arachnids and rank seventh in total species diversity among all other orders of organisms. Spiders are found worldwide on every continent except for Antarctica, and have become established in nearly every habitat with the exceptions of air and sea colonization. As of November 2015, at least 45,700 spider species, and 113 families have..
Sources and Credits
- (c) gbohne, some rights reserved (CC BY-SA), http://www.flickr.com/photos/gbohne/5406914325/
- (c) Wikipedia, some rights reserved (CC BY-SA), https://en.wikipedia.org/wiki/Araneae
