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Male calanoid copepod Female calanoid copepod
   
Copepod has a geniculate right antenna (ga)
and does not have an egg sac
Copepod does not have a geniculate antenna
(right or left) or has an egg sac (es).
   
 
Taxonomy
Phylum Arthropoda
Subphylum Crustacea
Class Maxillopoda
Subclass Copepoda
Order Calanoida
Family