Females: AnteriorCe pointed. More characters can be accessed by backtracking the key: Page 487: Copepoda: Genus Augaptilus females
Males: Left P5 Exp3 with terminal spine equal to 1/5 -1/6 length of subapical spine. More characters can be accessed by backtracking the key: Page 911
Kingdom Animalia Phylum Crustacea Class Maxillopoda Subclass Copepoda Order Calanoida Family Augaptilidae Genus Augaptilus Species Augaptilus spinifrons