The bolas spider constructs an ingenious “bolas”. A bolas is a type of ancient south-American throwing weapon made of weights on the ends of interconnected cords. It was used to capture animals by entangling their legs. The bolas spider spins its bolas with a sticky glob of silk at the end of another silken thread. At night, it holds its weapon with one of its legs, ready to fling. Female bolas spiders use a different trick. They mimic the chemical signal of a female moth, and lure male moth suitors. When the predator senses the wing vibrations of an approaching moth, it produces a bolas, and throws its “lasso” to capture its meal.
Picture Credit : Google