Users' questions

Are centipedes Chelicerata?

Are centipedes Chelicerata?

Chelicerata is one of five subphyla into which arthropods are typically divided. The other subphyla are Trilobitomorpha (trilobites), Myriapoda (millipedes, centipedes), Hexapoda (insects), and Crustacea (lobsters, crabs, barnacles, shrimp, copepods, etc.).

What are the only two animals in the subphylum Chelicerata?

Chelicerata is a division within the Arthropoda, containing animals such as spiders, scorpions, harvestmen, mites and ticks. Like all arthropods, they have a segmented body and segmented limbs and a thick chitinous cuticle called an exoskeleton. Chelicerates have two body segments; a cephalothorax and an abdomen.

What does Chelicerata mean in Latin?

The subphylum Chelicerata (New Latin, from French chélicère, from Greek χηλή, khēlē “claw, chela” and κέρας, kéras “horn”) constitutes one of the major subdivisions of the phylum Arthropoda.

Which arthropods have chelicerae?

The chelicerae (/kəˈlɪsəriː/) are the mouthparts of the 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 similarly to pincers.

What’s the difference between a mandibula and a chelicerate?

The key difference between chelicerates and mandibulates is that chelicerates have chelicerae, while mandibulates have mandibles. Arthropoda is the largest phylum that belongs to Kingdom Animalia. Therefore, it contains a huge number of animal species having an exoskeleton and joined appendages. They are found in all types of habitats.

What kind of body does a Chelicerata have?

Chelicerates’ bodies consist of two tagmata, sets of segments that serve similar functions: the foremost one, called the prosoma or cephalothorax, and the rear tagma is called the opisthosoma or abdomen. However, in the Acari (mites and ticks) there is no visible division between these sections.

Which is the sister group of Arachnomorpha and Mandibulata?

Mandibulata, termed ” mandibulates “, is a clade of arthropods that comprises the extant subphyla Myriapoda (millipedes and others), Crustacea and Hexapoda (insects and others). Mandibulata is currently believed to be the sister group of the clade Arachnomorpha, which comprises the rest of arthropods ( Chelicerata and Trilobita ).

How are chelicerates different from other arthropods?

Chelicerates are a major group of arthropods. They have a pair of chelicerae. However, they lack mouthparts for chewing, unlike mandibulates. Hence, they need to predigest food and absorb nutrients in liquid form. Their body can be divided into two main parts as cephalothorax and abdomen. Moreover, they have six pairs of appendages.