Caligus amblygenitalis Shiino, 1961, male A habitus, dorsal B urosome, dorsal C caudal ramus, ventral D antennule E antenna F maxilliped G sternal furca H leg 1 I distal region of leg 1 exopod J legs 5 and 6. Scale bars: 0.5 mm (A); 0.1 mm (B, F); 0.05 mm (C–E, G, H, J); 0.02 mm (I).