Caligus asymmetricus Kabata 1965

Caligus asymmetricus Kabata, 1965 (Figs 2A–E) Hosts: Katsuwonus pelamis (Linnaeus); Scomberomorus commerson (Lacepède) (Scombridae: Scombriformes); Sphyraena barracuda (Edwards) (Sphyraenidae: Carangiformes) Locality: Off east coast South Africa (Indian Ocean)— K. pelamis, S. commerson; off west coast South Africa (Atlantic Ocean)— S. barracuda Material examined: 11♀ + 1♂ Material collected: 2♀ from S. commerson; 7♀ + 1♂ from S. barracuda; and 2♀ from K. pelamis Voucher material: 3♀ (SAMC-A099195) from S. barracuda deposited in the Iziko South African Museum, Cape Town, South Africa. Adult female (Fig. 2A) distinguished by its small size and short abdomen (about 10% of total length); antenna (a2) with small, narrow posterior process (arrowed) on proximal segment (Fig. 2B); post-antennal process (pap) with small, acutely pointed tine (Fig. 2B); sternal furca with slender, pointed tines (Fig. 2C); leg 2 endopod first segment with long distolateral spinules (s), second segment outer margin with double row of 6–8 strong denticles (d) (Fig. 2D); leg 4 outer spines I–III (arrowed) equal length (Fig. 2E) (cf. Cressey & Cressey 1980; Ho & Lin 2004; Boxshall 2018). Remarks: This confirms the previous report of C. asymmetricus from S. commerson and K. pelamis off South Africa (Oldewage & Van As 1989; Dippenaar 2004) while S. barracuda constitutes a new host record.