Abstract
A new species of deepwater gurnard, Pterygotrigla (Otohime) madagascarensis sp. nov. is described, based on two specimens collected on the upper continental slope south of Madagascar, in the southwestern Indian Ocean. The new species belongs to the tropical Indo-Pacific subgenus Otohime in having a short rostral projection, short posttemporal spine, long opercular spine and no cleithral spine. It is most similar to P. (O.) multipunctata, and P. (O.) urashimai, in having no large blotch on the first dorsal fin, a jet-black blotch and no white ocellus on the inner pectoral-fin surface, with no scales on the breast and front of the pectoral-fin base. However, the new species differs from the latter two species by the combination of the following characters: first dorsal-fin spines 7, second dorsal-fin rays 12, dusky rays on the inner pectoral-fin surface, one row of blackish botches on second dorsal fin, and no papillae on the dorsal surface of oral cavity. A key is provided for the twelve Pterygotrigla species now in the subgenus Otohime.
References
Boulenger, G.A. (1888) An account of the Fishes obtained by Surgeon-Major A.S.G. Jayakar at Muscat, East coast of Arabia. Proceedings of the Zoological Society of London, 1887, 653–667.
https://doi.org/10.1111/j.1469-7998.1887.tb08159.x
Chen, M.H & Shao, K.T. (1988) Fishes of Triglidae (Scorpaenoidei) from Taiwan. Journal of the Taiwan Museum, 41 (1), 127–138.
Fricke, R., Eschmeyer, W. N., and Laan, R. van der (Eds) 2019. Catalog of Fishes: Genera, Species, References. Available From http://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatmain.asp (4 May 2019)
Gloerfelt-Tarp, T. & Kailola, P.J. (1984) Trawled fishes of southern Indonesia and northwestern Australia. The Australian Development Assistance Bureau, Canberra, 406 pp.
Golani, D. & Baranes, A. (1977) A new deepwater gurnard, Pterygotrigla spirai, from the northern Red Sea (Osteichthyes: Triglidae). Israel Journal of Zoology, 43, 185–195.
Herre, A.W. & Kauffman, D.E. (1952) New and little known Philippine triglids. Proceedings of the Biological Society of Washington, 65, 27–30.
Jordan, D.S. & Starks, E.C. (1907) Note on Otohime, a new genus of gurnards. Proceedings of the U. S. National Museum, 33 (1517), 629–670.
https://doi.org/10.5479/si.00963801.33-1581.629
Kamohara, M. (1938) On the Offshore Bottom-fishes of Prov. Tosa, Shikoku, Japan. Maruzen Co., Tokyo, 86 pp.
Last, P.R. & Richards, W.J. (2012) Two new gurnards of the genus Pterygotrigla (Scorpaeniformes: Triglidae) from Australian seas. Zootaxa, 3195 (1), 39–50.
https://doi.org/10.11646/zootaxa.3195.1.2
Matsubara, K. (1955) Fish morphology and hierarchy. II. Ishizaki-shoten, Tokyo, 815 pp. [pp. 791–1605]
Matsubara, K. & Hiyama, Y. (1932) A review of Triglidae, a family of mail-cheeked fishes, found in the waters around Japan. Journal of the Imperial Fisheries Institute, 28 (1), 3–667.
Paxton, J.R., Gates, J.E., Bray, D.J., Gomon, M.F. & Hoese, D.F. (2006) Fishes, Triglidae. Zoological Catalogue of Australia, 35, 921–930.
Richards, W.J & Jones, D.L. (2002) Preliminary classification of the gurnards (Triglidae: Scorpaeniformes). Marine and Freshwater Research, 53, 275–282.
https://doi.org/10.1071/MF01128
Richards, W.J. & Yato T. (2012) The tropical species of the subgenus Pterygotrigla (Pisces: Triglidae: Pterygotrigla) with description of a new species. Zootaxa, 3484 (1), 53–64.
https://doi.org/10.11646/zootaxa.3484.1.3
Richards, W.J. & Yato T. (2014) Revision of the subgenus Parapterygotrigla (Pisces: Triglidae: Pterygotrigla). Zootaxa, 3768 (1), 23–42.
https://doi.org/10.11646/zootaxa.3768.1.2
Richards, W.J., Yato, T. & Last, P.R. (2003) Revision of the gurnard fish subgenus Otohime (Triglidae, Pterygotrigla). Smithiana Bulletin 2, 1–18.
Sabaj, M.H. (2016) Standard Symbolic Codes for Institutional Resource Collections in Herpetology and Ichthyology. An Online Reference. Version 6.5. Available from: http://www.asih.org (accessed 20 May 2018)
Temminck, C.J. & Schlegel, H. (1843) Pisces. In: Fauna Japonica, sive descripto animalium quae in itinere per Japonium suscepto annis 1823–30 collegit, notis observationibus et adumbrationibus illustravit P. E. de Siebold, Parts 2–4, pp. 21–72.
Waite, E.R. (1899) Scientific results of the trawling expedition of H. M. C. S. “Thetis”. Fishes. Memoirs of the Australian Museum, 4, 105–109.
https://doi.org/10.3853/j.0067-1967.4.1899.428
Yatou, T. & Yamakawa, T. (1983) A new triglid fish, Pterygotrigla multipunctata, from Japan. Japanese Journal of Ichthyology, 30 (3), 217–220.