Commonly referred to as "jaws", chelicerae may be shaped as either articulated fangs, or as a type of pincers. Some chelicerae, such as those found on nearly all spiders, are hollow and contain (or are connected to) venom glands, used to inject venom into prey or a perceived threat.

Chelicerates include the sea spiders, horseshoe crabs, and arachnids (including harvestmen, scorpions, spiders, solifuges, ticks, and mites, among many others), as well as a number of extinct lineages, such as the eurypterids (sea scorpions) and chasmataspidids.

Dec 16, 2024 · Chelicerates are ammonotelic, expelling waste from the body in the form of ammonia, which is usually released through gills or eliminated through the anus as feces. They also use specialized nephridia, known as ‘little kidneys,’ …

The meaning of CHELICERA is one of the anterior pair of appendages of an arachnid often specialized as fangs.

In many forms they are chelate, or pincerlike, and are used to hold and crush prey. Among spiders the basal segment of the chelicerae contains venom sacs, and the second segment, the fang, injects… The first pair, the chelicerae, often have claws or fangs.

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.

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.

Dec 13, 2019 · Chelicerates (Chelicerata) are a group of arthropods that includes harvestmen, scorpions, mites, spiders, horseshoe crabs, sea spiders, and ticks. There are about 77,000 living species of chelicerates. Chelicerates have two body segments (tagmenta) and six pairs of …

Sep 23, 2021 · Chelicerates, such as arachnids, sea spiders, and horseshoe crabs, are known for having segmented bodies with paired jointed limbs or appendages. The first pair of these appendages is termed chelicerae, which etymologically means jaws or horns and from where the name of this group is derived.

Chelicera: Fixed finger with 2 large teeth plus 4 smaller teeth between these, plus 1 very small tooth on margin of large teeth; brush at base of fixed finger composed of 7 setae (G5A), each densely pilose in distal half; lateral surface with 3 large, lanceolate, terminally pilose setae (Gl); internal face of chelicera with 5 short whip-like ...