Spider nest explosion in Brazil!

I was just walking in a neighborhood in Brasilia, in the serado. When there was an explosion of spiders above our heads. It felt like it was raining spiders! Most species of social spiders live in the tropical regions of the world where insect size and density is highest but several species reach into the eastern United States and other temperate areas. By building a communal web, it is thought that the spiders approximately maximize total biomass capture per spider. Having a larger web and multiple spiders to work together to subdue prey allows them to prey on larger organisms than would be possible if they led a solitary existence. The colonies can grow large enough to take down birds and bats, as well as very large insects.

Living in a colony also has another major benefit for spiders: cooperative nest maintenance. Nest maintenance does not rely solely on an individual in a colony setting and thus saves on a per-capita investment in maintaining silk structures. Predator defense is also increased in a colony with a large web and multiple individuals analogous to schools of fish or herds of mammals.