TABLE 4 in A new species of fish parasitic isopod, Lobothorax bharat sp. nov. (Isopoda: Cymothoidae) from Trichiurus lepturus Linnaeus 1758 (Scombriformes: Trichiuridae), India

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, 1857L. laevis Richardson, 1910L. nicosmiti Aneesh, Bruce & Kumar, 2021Maximum body length3.03 times greatest width2.9 times greatest width2.3 times greatest width3.0–3.3 times greatest widthMid-dorsal ridge on pereonitesPresentPresentAbsentAbsentCephalonAnteriorly sub truncateAnteriorly acuteAnteriorly truncateAnteriorly sub truncateAnterolateral expansion of pereonite 1Does not cross the anterior margin of cephalon. Reaches up to a subequal distance between the eyes and anterior margin of cephalonDistinctly crosses the anterior margin of cephalonDoes not cross the anterior margin of cephalon. Reaches up to a subequal distance between the eyes and anterior margin of cephalonDoes not cross the anterior margin of cephalonMaxilliped article 3With 3 robust setaeWith 4 robust setae–With 3 robust setaePereopod lengthpereopod 3 smallestpereopod 1 smallest–pereopod 3 smallestPleotelsonDistal margin with caudomedial pointDistal margin with caudomedial pointDistal margin with caudomedial pointPosterior margins weakly emarginateUropodsExopod shorter than the endopod, apex acuteExopod shorter than endopod, apex acuteExopod shorter than endopod, apex narrowly roundedExopod shorter than endopod, apex narrowly rounded.HostTrichiurus lepturus Linnaeus, 1758Lepturacanthus savala (Cuvier, 1829) Trichiurus lepturus Linnaeus, 1758UnknownPromethichthys prometheus (Cuvier, 1832)DistributionCoastal waters of Odisha coast, India (Northern east coast).Java, Indonesia, Ubay, Philippines, South China Sea, India, East MalaysiaCapitancillo Island (Philippines), Mergui Archipelago, Bay of BengalMunambam, Kerala, southwestern, India