Udonella caligorum Johnston
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Family:  Udonellidae ()
Max. size: 
Environment:  host; marine
Distribution:  Western Atlantic: USA and Puerto Rico.
Diagnosis:  The cylindrical body has a posterior sucker-like attachment organ that is not divided into sections and is not armed with anchors, bars or spines.
Biology:  Found in free swimming parasitic copepods captured in plankton nets. Transfers from one copepod host to another when these crustacean parasites are mating (a sexual disease of copepods). May feed on parasitic copepods instead of fish host; covers these crustacean parasites with eggs that are probably detrimental. May harm other parasites and may actually benefit fish host (Ref. 359).
IUCN Red List Status: Not Evaluated (N.E.) Ref. 123251)
Threat to humans: 
Country info:   
 

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