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  •  Re: The spiders...they're SOCIAL spiders (0+ / 0-)

    This Metafilter post has all you need to know:

    A biologist who specializes in spiders of the Pontifical Catholic University of Paraná (PUC-PR), Marta Fischer, examined the picture and said that the phenomenon is normal and occurs mainly in the cities of São Paulo. "It is the kind of spider known as Anelosimus Eximius, which are social spiders. They are usually in trees during the day and in the late afternoon and early evening construct a sort of sheet webs, each makes his and then they come together. The goal is to capture insects," she explains, "During the day they destroy the webs to prevent birds doing it," concludes Marta, who also said that the venom of this species causes no risks to humans."

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