Trichonephila clavipes builds one of the largest and most durable orbs in the Americas: a vertical wheel a metre or more across, hung from long anchor lines, kept and repaired over days rather than eaten and respun each night. The female sits at the hub; her male may be a twentieth of her mass and lives at the web's edge.
The silk is yellow because it contains pigment, and the spider varies how much it deposits. Two explanations compete. In sunlit gaps the golden thread may resemble a shaft of light and draw bees in; in shade it may simply be harder to see against leaf litter. Field results support each in different settings.
The silk has been gathered for textiles. A cape exhibited in 2012 was woven from the silk of more than a million Madagascan Trichonephila, hand-collected and released, over roughly eight years of work.