Order of arachnids, the tailless whip scorpions, comprising about 17 genera and 136 species that are found in tropical and subtropical regions worldwide. Amblypygids are small, their bodies are broad and highly flattened and the first pair of legs are extremely long and modified to act as sensory organs. They have no silk glands or venomous fangs, but can have prominent pincer-like pedipalps.