A chelicerate is a member of the arthropod group Chelicerata. These invertebrates are characterized by the presence of chelicerae, specialized appendages used for feeding, often as fangs or pincers, located near the mouth. They lack antennae and typically possess two body sections: a cephalothorax (fused head and thorax) and an abdomen. Chelicerates include arachnids (spiders, scorpions, mites, ticks), horseshoe crabs, and sea spiders, representing a diverse group that has thrived for hundreds of millions of years in various terrestrial and aquatic environments, each group with unique specializations and behaviours. The absence of antennae and the structure of their chelicerae set them apart.
Chelicerate meaning with examples
- The biologist carefully examined the spider, noting its two body sections, cephalothorax and abdomen, confirming it was a chelicerate. The prominent chelicerae, equipped with venom glands, identified this chelicerate species as a predator, using its fangs to inject its prey. The eight legs, another distinctive trait, moved agilely as the chelicerate prepared to pounce. Observing its web, the specialist understood how this chelicerate hunts.
- During his field study, the entomologist found a preserved scorpion, a prime example of a chelicerate. The scorpion's segmented body, bearing both chelicerae and pedipalps (another pair of appendages), classified it as such. The researchers noted that the scorpion's chelicerae are small claws. The researchers noted that its pedipalps were used for grasping prey and defence, which is very common to other chelicerates. They identified this chelicerate's specialized tail as a defence mechanism.
- While exploring the intertidal zone, the marine biologist documented the horseshoe crab, which is another type of chelicerate. She marveled at the animal's ancient lineage and distinctive anatomy, including the chelicerae, used for feeding. This chelicerate, although aquatic, shares the fundamental characteristics: a body divided into a cephalothorax and abdomen, and no antennae. This observation proved its classification as a chelicerate, a fascinating survivor from a distant past.
- Under a microscope, the acarologist inspected a tiny mite, recognizing its chelicerae. The mouthparts, which were used to pierce the skin, showed the mite's classification as a chelicerate. Though small and often unseen, this chelicerate plays a significant role in the ecosystem. The arachnid body structure and chelicerae were fundamental indicators of its classification. Studying this chelicerate revealed its parasitic lifestyle.
Chelicerate Synonyms
arachnid arthropodChelicerate Antonyms
crustacean insectChelicerate Crossword Answers
10 Letters
CHELICERAL