Female A1 6-segmented. Pr without network of ripples in chitin. More characters can be accessed by backtracking the key: Page 1222: Copepoda: Family Aegisthidae
Kingdom Animalia Phylum Crustacea Class Maxillopoda Subclass Copepoda Order Harpacticoida Family Aegisthidae Genus Aegisthus Species Aegisthus aculeatus