Caligus antennatus Boxshall & Gurney, 1980
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publication ID |
https://doi.org/10.11646/zootaxa.5686.2.1 |
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publication LSID |
lsid:zoobank.org:pub:FAE3CA10-9DC4-45E0-819E-6F3A02CE7F20 |
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DOI |
https://doi.org/10.5281/zenodo.16987275 |
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persistent identifier |
https://treatment.plazi.org/id/5E1F87E2-6C5C-9A35-FF6D-FA94FC16FEEC |
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treatment provided by |
Plazi |
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scientific name |
Caligus antennatus Boxshall & Gurney, 1980 |
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Caligus antennatus Boxshall & Gurney, 1980 View in CoL
( Figs 14A View FIGURE 14 – 15D View FIGURE 15 )
Host: Mustelus mustelus (Linnaeus) ( Carcharhiniformes : Triakidae )
Locality: Off west coast South Africa (Atlantic Ocean)
Material examined: 3♀
Material collected: 3♀ from M. mustelus
Voucher material: 1♀ ( SAMC-A099205 ) from M. mustelus deposited in the Iziko South African Museum , Cape Town, South Africa .
Adult female ( Fig. 14A View FIGURE 14 ) genital complex wider than long; abdomen 1-segmented; antenna with spinuous proximal process (arrowed) ( Fig. 14B View FIGURE 14 ), large conical process with concave tip (arrowed) and small subapical seta (s) proximally on terminal segment ( Fig. 14C View FIGURE 14 ); post-antennal process with distal flange (arrowed) ( Fig. 14D View FIGURE 14 ); maxillule with dentiform posterior process bifid, smaller tine (arrowed) basal to main tine ( Fig. 14E View FIGURE 14 ), small triangular protuberance (arrowed) posteromedial to tip of dentiform process ( Fig. 14F View FIGURE 14 ); maxilliped with prominent acuminate process (arrowed) basal on corpus ( Fig. 15A View FIGURE 15 ); sternal furca small with parallel tines ( Fig. 15B View FIGURE 15 ); leg 1 last exopodal segment with terminal seta 4 (4) distinctly longer than terminal spines (ts) ( Fig. 15C View FIGURE 15 ); leg 4 3-segmented with I, III spines (arrowed) respectively ( Fig. 15D View FIGURE 15 ) (cf. Boxshall & Gurney 1980; Kabata & Taureen 1984).
Remarks: Caligus antennatus has only been reported from Acanthopagrus latus (Houttuyn) ( Sparidae : Acanthuriformes) ( Boxshall & Gurney 1980; Kabata & Taureen 1984). Therefore, this finding from an elasmobranch is unusual. Additionally, the habitus of the adult female differs slightly from that illustrated by Boxshall & Gurney (1980) (see Fig. 8A View FIGURE 8 in Boxshall & Gurney (1980)) with the genital complex wider than long and the posterolateral corners of the genital complex slightly lobate (see Fig. 14A View FIGURE 14 ). Furthermore, the proximal process on the antenna is blunt ended rather than spinuous (see Fig. 14B View FIGURE 14 ). However, the distinguishing features of C. antennatus i.e. the structure of the antenna, post-antennal process, maxillule, maxilliped, sternal furca, length of leg 1 last exopod terminal seta 4 and structure of leg 4 ( Boxshall & Gurney 1980; Kabata & Taureen 1984) all conforms to those of the examined specimens and thus they are identified as C. antennatus .
This report constitutes a new species and host record off South Africa.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.