What are the short, needle-tipped appendages of a spider known as?

The short, needle-tipped appendages of a spider are known as chelicerae. These appendages are a defining characteristic of arachnids and are primarily used for grasping and tearing prey. Chelicerae in spiders are often equipped with fangs that can inject venom into their prey, which aids in digestion and immobilization.

In contrast, pedipalps are more elongated appendages located near the mouth that assist in sensory perception and manipulating food. Antennules are typically found in crustaceans, serving as sensory organs, and spinnerets are specialized structures used to produce silk for webs and other purposes in spinning behavior. Understanding the specific functions of these appendages helps clarify their roles in the anatomy and behavior of spiders.