Arthropod leg
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The arthropod leg is a form of jointed appendage of arthropods, usually used for walking. Many of the terms used for arthropod leg segments are of Latin origin, and may be confused with terms for bone
The leg of a squat lobster, showing the segments; the ischium and merus are fused in many decapods
Seven-segmented legs of Scutigera coleoptrata
Zabalius aridus showing full leg anatomy, including plantulae under each tarsomere
Acanthacris ruficornis, legs saltatorial, femora with bipennate muscle attachments, spines on tibiae painfully effective in a defensive kick
Chelae
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A chela – also called a claw, nipper, or pincer – is a pincer-shaped organ at the end of certain limbs of some arthropods. The name comes from Ancient Greek χηλή, through Neo-Latin chela. The plural f
Fiddler crabs like Minuca pugnax, and other members of the family Ocypodidae, have chelae of different sizes: a large left chela and a small right chela.
Lobster such as Homarus americanus have prominent chelipeds.
Front view of a pseudoscorpion, showing pincer-like chelicerae (middle) and pedipalps (sides).
Bocchus thorpei, a dryinid wasp.