A subgroup of air-breathing, terrestrial (land) arthropods, spiders are not actually insects but rather belong to the Class Arachnida (a.k.a. arachnid). Besides spiders, other arachnids include ...

This is the first evidence of colonial behaviour in two common spider species and probably represents the largest spider web ...

The extraordinary anti-predator strategy of two tiny, orb-weaving spider species has been uncovered by scientists from The Australian National University (ANU) and the University of Florida.