Caligus quadratus Shiino 1954

Caligus quadratus Shiino, 1954 (Figs 5A–F) Hosts: Scomberomorus commerson (Lacepède) (Scombridae: Scombriformes); Coryphaena hippurus Linnaeus (Coryphaenidae: Carangiformes) Locality: Off east coast South Africa (Indian Ocean)—both hosts; off west coast South Africa (Atlantic Ocean)— C. hippurus Material examined: 5♀ + 3♂ Material collected: 1♂ from S. commerson; and 42♀ + 8♂ from C. hippurus Voucher material: 3♀ + 2♂ (SAMC-A099198) from Coryphaena hippurus deposited in the Iziko South African Museum, Cape Town, South Africa. Adult female (Fig. 5A) genital complex distolateral corners slightly lobate, only reaching proximal part of 1-segmented abdomen with slightly indented lateral margin posteriorly; antenna (a2) with small pointed posterior process (arrowed) on basal segment (Fig. 5B); post-antennal process (pap) with small weakly curved tine (Fig. 5B); sternal furca (sf) with slightly divergent tines, tips blunt with lateral flanges (Figs 5B, C); leg 1 distal exopodal segment posterior pinnate setae (arrowed) armed with fine setules (Fig. 5D); leg 2 second endopod segment outer margin with large denticles (d) (Fig. 5E); leg 3 first exopodal segment with weakly curved distolateral spine (ds) (Fig. 5F) (cf. Kamanli 2020; Özak 2020). Remarks: This is the first time that C. quadratus is reported off southern Africa.