What is the name of the appendage that mantis shrimp use to rub their eyes?

What is the name of the appendage that mantis shrimp use to rub their eyes?

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In this short clip, you can see the mantis shrimp using some sort of feathery arm/claw to rub its eyes. Looking at a diagram here, it appears possibly that it's using maxillipeds. Someone with knowledge of crustaceans (the behavior is probably not unique to mantis shrimp) would be appreciated.

Mantis shrimp use their first maxillipeds for grooming (maxilliped=modified appendage), which is specialized for this purpose. Details and a picture of the organ can be found in the link. The second maxilliped is their famous specialized organ for striking or spearing prey with enormous force. More about their raptoral appendage, with links to further references. Mantis shrimp also have very complex eyes, described as "… the most complicated visual system of any animal on Earth". Their eyes can see a range from ultraviolet to infra-red and has specialized regions for observing motion, form, depth, and color. More on Mantis shrimp eyes can be found in Marshall & Oberwinkler (1999).


Lobsters are a family (Nephropidae, sometimes also Homeridae) of large marine crustaceans.

  • AcanthacarisBate, 1888
  • EunephropsSmith, 1885
  • HomarinusKornfield, Williams & Steneck, 1995
  • HomarusWeber, 1795
  • HoplopariaM'Coy, 1849
  • JagtiaTshudy & Sorhannus, 2000
  • MetanephropsJenkins, 1972
  • NephropidesManning, 1969
  • NephropsLeach, 1814
  • NephropsisWood-Mason, 1873
  • OncopareiaBosquet, 1854
  • PalaeonephropsMertin, 1941
  • ParaclythiaFritsch & Kafka, 1887
  • Pseudohomarusvan Hoepen, 1962
  • ThaumastochelesWood-Mason, 1874
  • ThaumastochelopsisBruce, 1988
  • ThymopidesBurukovsky & Averin, 1977
  • ThymopsHolthuis, 1974
  • ThymopsisHolthuis, 1974

Lobsters have long bodies with muscular tails, and live in crevices or burrows on the sea floor. Three of their five pairs of legs have claws, including the first pair, which are usually much larger than the others. Highly prized as seafood, lobsters are economically important, and are often one of the most profitable commodities in coastal areas they populate. [2]

Commercially important species include two species of Homarus (which looks more like the stereotypical lobster) from the northern Atlantic Ocean, and scampi (which looks more like a shrimp, or a "mini lobster") — the Northern Hemisphere genus Nephrops and the Southern Hemisphere genus Metanephrops.