Spiders are not famous for their caring, sharing nature. Unlike insects such as ants, it is virtually unheard of for arachnids to live in societies that employ tactics and team work.
So the discovery in Ecuador of spiders nesting in family-based communities and hunting in packs was a surprise find for Leticia Avilés, an arachnid expert at the University of British Columbia in Canada.
According to Avilés, there are over 39,000 identified spider species. While she has seen just over 20 species cooperate, she has never encountered any species quite like Theridion nigroannulatum.



