Figures 1–9. Amercaenis cusabo, larva. 1, Head and pronotum, dorsal. 2, Angulate mandible. 3, Maxilla. 4, Labium. 5, Foreleg, dorsal. 6. Hindleg, dorsal. 7, Base of abdomen, lateral. 8, Operculate gill, dorsal. 9, Abdominal sterna 7–9.