Caligus pelamydis Kroyer 1863

Caligus pelamydis Krøyer, 1863 (Figs 11A – 12B) Hosts: Thyrsites atun (Euphrasen) (Gempylidae: Scombriformes); Seriola lalandi Valenciennes (Carangidae: Carangiformes) Locality: Off west coast South Africa (Atlantic Ocean)— T. atun, S. lalandi Material examined: 6♀ Material collected: 11♀ from T. atun; and 7♀ from S. lalandi Voucher material: 2♀ (SAMC-A099203) from T. atun deposited in the Iziko South African Museum, Cape Town, South Africa. Adult female (Fig. 11A) almost 5 mm in total length; genital complex posterolateral corners not lobate, rounded; elongated abdomen, indistinctly 2-segmented, fusiform (evenly convex lateral margins); post-antennal process with reduced, vestigial tine (arrowed) (Fig. 11B); sternal furca tines broad, blunt-tipped (Fig. 11C); leg 1 last exopodal segment terminal spine 2 tapered (arrowed) (Fig. 11D); leg 2 exopodal segments 2 and 3 distolateral spines (arrowed) mostly aligned with longitudinal axis with ramus (Fig. 11E); endopodal segments 2 and 3 with large patch of denticles (arrowed) on outer margins (Fig. 12A); leg 4 last segment with extended distomedial fringe of modified pecten (arrowed) (Fig. 12B) (cf. Cressey & Cressey 1980; Boxshall 2018). Remarks: This is the first report from S. lalandi off South Africa.