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Nymphon gracile
Nymphon gracile Leach, 1814
Nymphon gracile
photo by Fenwick, David

Family:  Nymphonidae ()
Max. size: 
Environment:  benthic; marine
Distribution:  Northeast Atlantic: Europe.
Diagnosis:  Trunk: externally distinct. Cephalothorax: Full complement of appendages; consists of pair of palps, chelifores, ovigerous legs and ambulatory or natatory legs. Female palps and chelifores: smaller than males. Body: elongated and limbs can be used for swimming. Chelifores: Well developed; gather food and carry it to the mouth. Proboscis of the juvenile: Shorter and broader than in adult.
Biology:  Coastal to slope (Ref. 19); intertidal and sublittoral of rocky shores (Ref. 277). Larvae is an ectoparasite of hydroids. Chemically attracted to various hydroid species (Ref. 121217). Feeding on hosts: hydroid Actinia equina by grasping the sides and rasping away by the action of the jaws; Polyzoan Bowerbankia (Ref. 12); Actinia equina, Dynamena pumila, Bowerbankia,and Nucella eggs. Chelifores: responsible for transferring food to proboscis (Ref. 236). Method of feeding: When this species feed on the hydroid Dynamena pumila it slings to the colony by means of its long, slender legs and removes pieces by using the right and left chelifores alternatively (Ref. 236). Free-living (Ref. 3123).
IUCN Red List Status: Not Evaluated (N.E.) Ref. 123251)
Threat to humans: 
Country info:   
 

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