Female anal somite slightly narrower than Gns and in dorsal view anterior part with rounded expansion; seta on A2 B less than half length of seta on C; P4Enp with 2 long setae. Male Ur of 2 somites; P4Enp with 1 long and 1 very short rudimentaryseta. More characters can be accessed by backtracking the key: Page 1324
Kingdom Animalia Phylum Crustacea Class Maxillopoda Subclass Copepoda Order Poecilostomatoida Family Corycaeidae Genus Corycaeus Subgenus Urocorycaeus Species Corycaeus lautus