Lobothorax typus Bleeker, 1857

Martin, Melissa B., Tuah, Alia, Muhamad, Juariah H. & Bruce, Niel L., 2022, A review of the family Cymothoidae (Isopoda: Cymothooidea) infesting marine fishes from Malaysian waters, with new host and geographical records, Zootaxa 5222 (1), pp. 1-36 : 15-16

publication ID	https://doi.org/ 10.11646/zootaxa.5222.1.1
publication LSID	lsid:zoobank.org:pub:3F345BC7-B479-4E8F-A34B-9E6719119193
DOI	https://doi.org/10.5281/zenodo.7463466
persistent identifier	https://treatment.plazi.org/id/5F73878D-E853-FF88-FF6E-5276FB22FDAF
treatment provided by	Plazi
scientific name	Lobothorax typus Bleeker, 1857
status

Treatment

Lobothorax typus Bleeker, 1857 View in CoL View at ENA

( Fig. 10 A, B View FIGURE 10 )

Lobothorax typus View in CoL .— Yu & Bruce, 2006: 643, figs 1–3.— Trilles, 2008: 25.—Rameshkumar, Ravichandran, Sivasubramanian, & Trilles, 2013c: 43, fig 1E.—Anand Kumar, Rameshkumar, Ravichandran, Priya, Nagarajan & Goh, 2015: 208, 209, fig 2b.—Anand Kumar, Rameshkumar, Ravichandran, Nagarajan, Prabakaran & Ramesh, 2017: 57, 58, fig 2g.—Aneesh, Bruce, Kumar, Bincy & Sreenath, 2021a: 3, 4.

Saophra Typus Schioedte & Meinert, 1883: 283 View in CoL , pl. 11 figs. 1, 2.

Saophra auritus Schioedte & Meinert, 1883: 283 , pl. 11, figs. 3, 4.

Saophra typus View in CoL . — Nierstrasz, 1915: 87.— Trilles, 1994: 114.

Lobothorax aurita View in CoL . — Stebbing, 1893: 353.— Nierstrasz, 1915: 87; 1931: 130.

Type material. Type material not seen; Bleeker (1857) mentions only a single described specimen.

Type locality. Indonesia, western Java Sea, Jakarta Bay .

Type host. Host type unknown.

Material examined. 2 ovig, ♀ (33.55, 19.65 mm TL; 9.88, 7.81 mm W), Bidong Island , Terengganu, (5°36'49.9"N; 103°03'12.9"E), 5 August 2017, in the buccal cavity of Trichiurus lepturus , coll. Melissa B. Martin ( UMT Crus 01196, 01197) GoogleMaps .

Host. Trichiuridae : large head hairtail Trichiurus lepturus (Linnaeus, 1758) (see Rameshkumar et al. 2013; Anand Kumar et al. 2015, 2017; present study); cutlass fish Lepturacanthus savala (Cuvier, 1829) (see Bleeker, 1857; Yu and Bruce 2006, Rameshkumar et al. 2013).

Distribution. Indonesia, Jakarta ( Bleeker 1857; Schioedte & Meinert 1883); China, Hainan Island ( Yu & Bruce 2006); Philippines, Ubay ( Schioedte & Meinert 1883; Trilles 2008); India, Parangipettai ( Rameshkumar et al. 2013c); Peninsular Malaysia, Miri, Sarawak (Anand Kumar’s et al. (2015, 2017) and Bidong Archipelago, Terengganu (present study).

Remarks. Lobothorax typus may be diagnosed by anterolateral margins of pereonite 1 projecting forward beyond the anterior margin of the cephalon; weak dorsal median ridge that runs along pereonites 1–7; pereonites 5–7 abruptly shorter than pereonite 4 ( Yu & Bruce 2006). Lobothorax remains a relatively poorly known genus compared to the other buccal-attaching cymothoids, with the three known species recorded having an Indo-Malaysian distribution ( Yu & Bruce 2006). Past records specifically indicate that Lobothorax typus has low prevalence when infecting Trichiurus lepturus : 50 of 398 (P=12.6%) from the coast of Parangipettai (Rameshkumar et al. 2013), 1 of 32 (P=3.16 %), and 4 of 10 (P=40%) off the Miri coast Sarawak (Anand Kumar et al. 2015, 2017).