What is the difference between chelicerae and pedipalps?

They are characterized by having two body regions, a cephalothorax and an abdomen. They also have 6 pairs of appendages: 4 pairs of legs and 2 pairs of mouthpart appendages, the first are called chelicerae (hence, the subphylum Chelicerata). The second pair of mouthpart appendages are called pedipalps.

What is the difference between an arachnids pedipalps and it’s chelicerae?

All of the other arachnid groups, including Scorpions, Mites, and Harvestmen, have chelicerae as well, but spiders are the only arachnids with venomous chelicerae. Like the chelicerae, a spider’s pedipalps are part of its mouth, and are located just between the chelicerae and first pair of legs on the cephalothorax.

What is the function of the pedipalps?

Pedipalps are used for a variety of purposes, including prey capture, defense, courtship, and burrow excavation. A pair of legs are found on each of segments three through six.

What is a chelicerae in a tick?

Chelicerae are mouthparts, part of a tick’s jaw. They are maneuverable and function more like appendages, such as arms or legs, than teeth. (Think about that! Gross.) Many other animals have chelicerae, including horseshoe crabs and, most notably, spiders.

What is the difference between chelicerae and mandibles?

Chelicerates body is divided into cephalothorax and abdomen, while the mandibulates body is divided into head, thorax, and abdomen. Moreover, chelicerates do not possess antenna while mandibulates have one or two pairs of antennae.

What are the pedipalps in ticks?

Rows of recurved teeth on the ventral surface of hypostome are used to anchor the tick to its host. Pedipalps: Also known as palps, is a pair of finger-like projections located laterally on either side of hypostome (Plate 1.1). Each pedipalp comprises four articles (I–IV).

What is the purpose of a spiders chelicerae and pedipalps?

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 venom. The pedipalps, or palps, which in arachnids function as an organ of touch, constitute the second pair of appendages.

Which arthropods have chelicerae?

The chelicerae (/kəˈlɪsəriː/) are the mouthparts of the Chelicerata, an arthropod group that includes arachnids, horseshoe crabs, and sea spiders.

What is the use of chelicerae?

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).

Do ticks have pedipalps?

The mouthparts of a tick include a pair of pedipalps, two chelicerae that are used to cut through the skin of the host, and a barbed, needle-like hypostome that is used for feeding.

What are chelicerae and mandibulates?

Unlike the chelicerae of arachnids, mandibles can often be used to chew food. Mandibulates also differ by having antennae, and also by having three distinct body regions: head, thorax and abdomen. (The cephalothorax (or prosoma) of chelicerates is a fusion of head and thorax.)