The chelicerae (/ k ə ˈ l ɪ s ər iː /) are the mouthparts of the subphylum Chelicerata, an arthropod group that includes arachnids, horseshoe crabs, and sea spiders. Commonly referred to as " jaws ", chelicerae may be shaped as either articulated fangs , or as a type of pincers .

The chelicerae, which give the group its name, are the only appendages that appear before the mouth. In most sub-groups, they are modest pincers used to feed. However, spiders' chelicerae form fangs that most species use to inject venom into prey.

The first pair, the chelicerae, often have claws or fangs. They are used to capture prey (spiders), transport a spermatophore (sunspiders, some mites and ticks), produce sounds (sunspiders, some spiders), cut strands of silk (web-dwelling spiders), and produce silk (pseudoscorpions).

Dec 16, 2024 · The chelicerates derive their name from ‘chelicerae,’ the pincer-like appendages (found anterior to the mouth) that form an integral part of their feeding apparatus.

The Chelicerata are a diverse group of arthropods—though not as diverse as the Mandibulata—named for the presence of chelicerae. Chelicerae, meaning “claw horn” in Greek, are a pair of appendages anterior to (i.e., in front of) the mouth.

May 27, 2024 · A chelicera (plural, chelicerae) is a component of the fang- or pincer-like mouthparts of arthropods belonging to the subphylum Chelicerata. Of the many pairs of appendages these animals possess, the chelicerae represent the first pair.

Nov 19, 2009 · The chelicerae are a spider's jaws. They are located on the very front of a spider's cephalothorax. Every Kentucky spider has a pair of chelicerae, and they are tipped with fangs. Chelicerae are filled with muscles, and are used to hold prey while the spider injects venom.

The chelicerae (sing. chelicera) are paired structures used to seize prey or to bite defensively when threatened (Figs. 25.1 and 25.2). They also serve other functions in different groups of spiders, such as digging by burrowing species, transporting …

Jul 23, 2018 · The seven-segmented prosoma bears six pairs of appendages: the chelicerae, which are typically used for feeding; the pedipalps, which are unique to Chelicerata and serve an array of functions; and four pairs of walking legs.

Chelicerata is a fairly large subphylum of arthropods with about 70,000 species (mostly predatory) including spiders, scorpions, mites, and ticks. Their defining characteristic is a pair of specialized appendages called chelicerae. Chelicerae are pointed mouthparts used to …