chelicerae etymology

Etymology

The term "chelicerae" is derived from two Greek words:

  • Cheilos: Meaning "lip" or "jaw"
  • Keras: Meaning "horn"

Meaning

Chelicerae are a pair of appendages found in the anterior (front end) of arachnids (e.g., spiders, scorpions, mites). They are essentially modified mouthparts that are used for a variety of functions, including:

  • Grasping and crushing prey
  • Manipulating food
  • Defense

Origin

Chelicerae are ancient structures that have evolved over millions of years. They are thought to have originated from the walking legs of arthropod ancestors. Over time, these legs became modified into specialized feeding appendages.

Additional Notes

  • Chelicerae are typically composed of two segments: a basal segment called the coxa and a distal segment called the chela.
  • The chelae are often equipped with teeth or claws for grasping and piercing prey.
  • In some arachnids, the chelicerae are also used for sensory functions, such as detecting vibrations or chemicals.

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