General Feature

   Polynoidae are predators. They live commensally with different animals, such as asteroids, tube worms and corals.

   Bodies of Polynoidae are dorsoventrally flattened. Scales are present. Most species have elytrae alternate with dorsal cirri at the anterior end.

polynoidae3.jpg (23959 bytes)zoom.JPG (6914 bytes)

Whole segment


1-3 antennae.

Eversible pharynx with four jaws.

   Marginal smooth or fringed elytrae alternate with dorsal cirri at least at the anterior end.

polynoidae4.jpg (43167 bytes)zoom.JPG (6914 bytes)Prostomium

                                    ( anterior scale removed)  


polynoidae(S)5.jpg (27108 bytes)scale


Parapodia and setae

  Most parapodia are biramous. 

  All setae are simple. Notosetae variously developed.

polynoidae(S)1.jpg (29158 bytes)Parapodia biramous


polynoidae(S)4.jpg (28451 bytes)

Parapodia (ventral)





polynoidae(S)2.jpg (61491 bytes)Biserrated capillary setae


polynoidae(S)3.jpg (46428 bytes)

Spinule setae






polynoidaeS6.jpg (27273 bytes)Serrated notosetae


Amphinomidae Dorvilleidae Eunicidae Glyceridae Goniadidae Hesionidae Lumbrineridae Nephytidae Nereidae Onuphidae Phyllodocidae Pilargiidae Polynoidae Sigalionidae

Developed by: P. L. Chan     Last modified: 4 April,00