Ogre-Faced Spiders Leap Backward to Snare Flying Prey at Night
In the pitch-black understory of the Florida scrub, a silent predator hangs suspended by a single thread of silk. This is Deinopis spinosa , the ogre-faced spider, an arachnid renowned for its massive, headlight-like posterior median eyes. But tonight, it is not using its extraordinary vision to hunt. Suspended upside down, holding an elastic, rectangular frame of woolly cribellate silk between its four front legs, the spider waits in absolute stillness. It is a master of anticipation, waiting for a signal that does not come from sight, but from sound. Suddenly, a moth flutters behind the spider, entirely out of its field of view. In a fraction of a second, the spider launches its body backward in an acrobatic flip, expanding the silk net to several times its original size, and perfectly envelopes the insect mid-air. This astonishing maneuver, known as th...