Lophoura (Yamaguti, 1963)

Nagasawa, Kazuya, 2024, Rediscovery of a Deep-sea Fish Parasite Lophoura cornuta (Copepoda: Sphyriidae) in the Western North Pacific off Hokkaido, Northern Japan, Species Diversity 29 (1), pp. 37-42 : 41

Key to the Four Nominal Species of Lophoura from Japan (Post-metamorphic Adult Females)

1. Stalks of posterior processes issuing from midventral surface of trunk....... L. ventricula Ho and Kim, 1989

— Stalks of posterior processes issuing from near posterior margin of trunk............................. 2

2. Cephalothorax smooth.. L. cardusa (Leigh-Sharpe, 1934)

— Cephalothorax transversely wrinkled............... 3

3. Holdfast organ with four trunks, each with short and thick branch........... L. tetraloba Ho and Kim, 1989

— Holdfast organ with four trunks, each with some slen- der, elongated, irregularly curved branches of different lengths............... L. cornuta (C. B. Wilson, 1919)