Ground spiders (Gnaphosidae) specialize in catching prey that fights back fiercely, including ants and other spiders. They snare their prey with an unusually glue-like silk, which evolved from a thread normally used to anchor a web’s structural silks to surfaces.

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Ground spiders (Gnaphosidae) specialize in catching prey that fights back fiercely, including ants and other spiders. They snare their prey with an unusually glue-like silk, which evolved from a thread normally used to anchor a web’s structural silks to surfaces.