Female Pd4 in dorsal view usually projecting posteriorly into rounded lobe; male Gns with expanded part elongate, 2/3 as broad as long. More characters can be accessed by backtracking the key: Page 1331
Kingdom Animalia Phylum Crustacea Class Maxillopoda Subclass Copepoda Order Poecilostomatoida Family Corycaeidae Genus Corycaeus Subgenus Onychocorycaeus Species Corycaeus pacificus
