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TABLE 4 in A new species of fish parasitic isopod, Lobothorax bharat sp. nov. (Isopoda: Cymothoidae) from Trichiurus lepturus Linnaeus 1758 (Scombriformes: Trichiuridae), India
Authors/Creators
- 1. Post Graduate Department of Zoology, Berhampur University, Berhampur, Odisha- 760007, India. & Estuarine Biology Regional Centre, Zoological Survey of India, Gopalpur-on-Sea, Ganjam, Odisha- 61002, India.
- 2. Post Graduate Department of Zoology, Berhampur University, Berhampur, Odisha- 760007, India.
- 3. Zoological Survey of India, Western Regional Centre, Akurdi, Pune, Maharashtra- 411044, India.
- 4. Estuarine Biology Regional Centre, Zoological Survey of India, Gopalpur-on-Sea, Ganjam, Odisha- 61002, India.
Description
TABLE 4. Difference between morphological features of the new species Lobothorax bharat sp. nov. (present study) and the other described species of the genus Lobothorax (according to Richardson 1910; Yu & Bruce 2006; Aneesh et al. 2021)
| L. bharat sp. nov. | L. typus Bleeker, 1857 | L. laevis Richardson, 1910 | L. nicosmiti Aneesh, Bruce & Kumar, 2021 | |
|---|---|---|---|---|
| Maximum body length | 3.03 times greatest width | 2.9 times greatest width | 2.3 times greatest width | 3.0–3.3 times greatest width |
| Mid-dorsal ridge on pereonites | Present | Present | Absent | Absent |
| Cephalon | Anteriorly sub truncate | Anteriorly acute | Anteriorly truncate | Anteriorly sub truncate |
| Anterolateral expansion of pereonite 1 | Does not cross the anterior margin of cephalon. Reaches up to a subequal distance between the eyes and anterior margin of cephalon | Distinctly crosses the anterior margin of cephalon | Does not cross the anterior margin of cephalon. Reaches up to a subequal distance between the eyes and anterior margin of cephalon | Does not cross the anterior margin of cephalon |
| Maxilliped article 3 | With 3 robust setae | With 4 robust setae | – | With 3 robust setae |
| Pereopod length | pereopod 3 smallest | pereopod 1 smallest | – | pereopod 3 smallest |
| Pleotelson | Distal margin with caudomedial point | Distal margin with caudomedial point | Distal margin with caudomedial point | Posterior margins weakly emarginate |
| Uropods | Exopod shorter than the endopod, apex acute | Exopod shorter than endopod, apex acute | Exopod shorter than endopod, apex narrowly rounded | Exopod shorter than endopod, apex narrowly rounded. |
| Host | Trichiurus lepturus Linnaeus, 1758 | Lepturacanthus savala (Cuvier, 1829) Trichiurus lepturus Linnaeus, 1758 | Unknown | Promethichthys prometheus (Cuvier, 1832) |
| Distribution | Coastal waters of Odisha coast, India (Northern east coast). | Java, Indonesia, Ubay, Philippines, South China Sea, India, East Malaysia | Capitancillo Island (Philippines), Mergui Archipelago, Bay of Bengal | Munambam, Kerala, southwestern, India |
Notes
Published as part of Mohapatra, Sandeep Kumar, Roy, Sanmitra, Seth, Jaya Kishor, Tripathy, Basudev & Mohapatra, Anil, 2025, A new species of fish parasitic isopod, Lobothorax bharat sp. nov. (Isopoda: Cymothoidae) from Trichiurus lepturus Linnaeus 1758 (Scombriformes: Trichiuridae), India, pp. 337 in Zootaxa 5594 (2) on page 337, DOI: 10.11646/zootaxa.5594.2.5, http://zenodo.org/record/14954398
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Additional details
Identifiers
References
- Richardson, H. (1910) Marine isopods collected in the Philippines by the U. S. Fisheries steamer Albatross in 1907 - 08. Bureau of Fisheries Document, 736, 1-44. https://doi.org/10.5962/bhl.title.82673
- Yu, H. Y. & Bruce, N. L. (2006) Redescription of Lobothorax typus bleeker, 1857 (Isopoda, Cymothoidae): the first record of the species and genus from Chinese waters. Crustaceana, 79, 641-648. https://doi.org/10.1163/156854006778026816
- Aneesh, P. T., Bruce, N. L., Kumar, A. B., Bincy, M. R. & Sreenath, T. M. (2021) A taxonomic review of the buccal-attaching fish parasite genus Lobothorax Bleeker, 1857 (Crustacea: Isopoda: Cymothoidae) with description of a new species from southwestern India. Zoological Studies, 60, 1-13. https://doi.org/10.6620/ZS.2021.60-13