Vol. 60, 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
Panakkool Thamban Aneesh1,*, Niel L. Bruce2,3, Appukuttannair Biju Kumar1, Bincy M. Raj4, and Sreenath T. Mohanan4
of Aquatic Biology & Fisheries, University of Kerala, Karyavattom,
Thiruvananthapuram-695 581, Kerala, India. *Corresponding author:
Received 22 August 2020 / Accepted 20 January 2021
The genus Lobothorax Bleeker, 1857 is revised with the description of a new species collected from the gempylidaen fish Promethichthys prometheus
(Cuvier, 1832) from the southwestern coast of India. A revised generic
diagnosis is provided based on the redescription of the type species. Lobothorax aurita (Schioedte and Meinert, 1883) is here synonymised with Lobothorax typus
Bleeker, 1857, based on the original description. Lobothorax nicosmiti
Aneesh, Bruce and Kumar sp. nov., is described from the female stage
and it is characterized by: pereonite 1 anterolateral expansion not
extending to the anterior margin of cephalon; coarsely pitted
pereonites dorsal surfaces; pereonites without dorsal median
longitudinal ridges; anteriorly truncate cephalon; pleotelson about 0.6
times as long as wide, posterior margin weakly emarginate, broadly
sub-truncate, lateral margins convex; maxilliped palp article 3 with
three RS; pereopods basis much wider with prominent carina. A key to
the species of Lobothorax Bleeker, 1857 is presented.
Key words: Fish parasite, Cymothoidae, Lobothorax, New species, Indian Ocean.
Aneesh PT, Bruce NL, Kumar AB, Raj BM, Mohanan ST. 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. Zool Stud 60:0l. doi:-.