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| ©Alexandre Bernard |
| An Anelosimus eximius communal web. |
Giant webs catch most food when occupied by about 500 social spiders.
For many people it's the ultimate nightmare: thousands of spiders collaborating to form a well organized society. A new study published this week in Proceedings of the National Academy of Sciences reveals how colonies of one spider species grow to an enormous size, and the surprising factors that ultimately limit their expansion.
Spiders are usually thought of as lone hunters. However, a few dozen species do live cooperatively, building collective webs and sharing food-gathering and child care between them. One example is the neotropical species Anelosimus eximius, which can be found living in colonies containing thousands of individuals.
