Abstract
Two genera of barracudinas with luminescent duct in abdominal cavity, Lestrolepis and Lestidium, collected from around Taiwan are studied. Two species in each genus are recognized in Taiwan, including one new species in each genus. New diagnostic characters are used to distinguish these species. Lestrolepis nigroventralis sp. nov. is similar to Lestrolepis intermedia and can be distinguished by having 32–35 prehaemal vertebrae; dorsal-fin origin slightly in front of midline of distance between origins of pelvic and anal fins, distance between origins of dorsal and pelvic fin 9.8–11.7% SL; and pelvic-fin origin at or slightly behind midline of body, prepelvic length 50.6–52.6% SL. Lestidium orientale sp. nov. is similar to Lestidium atlanticum and can be distinguished by having prehaemal vertebrae 37–40; caudal vertebrae 41–44; a relatively short and deep head, reflected by a shorter snout (9.7–10.4% SL), shorter upper jaw (8.6–10.1% SL), shorter lower jaw (11.9–13.7% SL) and a deeper head (31.2–33.9% HL). Data of Lestrolepis japonicus and Lestidium prolixium collected from Taiwan, as well as two Atlantic congeners, are provided. DNA barcoding is conducted to support the recognition of these new species.
References
Chen, J.T.F & Yu, M.-J. (1986). A synopsis of the vertebrates of Taiwan, revised and enlarged edition. Commercial Press, Taipei, 1092 pp. [in Chinese]
Ege, V. (1933). On some new fishes of the families Sudidae and Stomiatidae. Preliminary note. Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening, Kjøbenhavn, 94, 223‒236.
Ege, V. (1953) Paralepididae I. (Paralepis and Lestidium). Dana Report, 40, 1–184.
Fowler, H.W. (1934) Descriptions of new fishes obtained 1907 to 1910, chiefly in the Philippine Islands and adjacent seas. Proceedings of the Academy of Natural Sciences of Philadelphia, 85, 233‒367.
Fukui, A. & Ozawa, T. (2004) Uncisudis posteropelvis, a new species of barracudina (Aulopiformes: Paralepididae) from the western North Pacific Ocean. Ichthyological Research, 51 (4), 289‒294.
https://doi.org/10.1007/s10228-004-0229-3
Graae MJ (1967) Lestidium bigelowi, a new species of paralepidid fish with photophores. Breviora, 277, 1–10.
Ghedotti, M.J., Barton, R.W., Simons, A.M. & Davis, M.P. (2015) The first report of luminescent liver tissue in fishes: Evolution and structure of bioluminescent organs in the deep-sea naked barracudinas (Aulopiformes: Lestidiidae). Journal of morphology, 276 (3), 310‒318.
https://doi.org/10.1002/jmor.20341
Harry, R.R. (1951) Deep-sea Fishes of the Bermuda oceanographic expeditions. Family Paralepididae. Zoologica, Scientific Contributions of the New York Zoological Society, 36 (1), 17‒35.
Harry, R.R. (1953a) Studies on the bathypelagic fishes of the family Paralepididae (order Iniomi). 2. A revision of the North Pacific species. Proceedings of the Academy of Natural Sciences of Philadelphia, 105, 169–230.
Harry, R.R. (1953b) Studies on the bathypelagic fishes of the family Paralepididae. 1. Survey of the genera. Pacific Science, 7 (2), 219‒249.
Ho, H.-C. & Golani, D. (2019) A new species of Lestrolepis from the Red Sea, with redescription of Lestrolepis pofi (Harry, 1953) (Aulopiformes: Parelepididae). Zootaxa, 4619 (3), 571‒579.
https://doi.org/10.11646/zootaxa.4619.3.10
Poey, F. (1868) Synopsis piscium cubensium. Catalogo Razonado de los peces de la isla de Cuba. Repertorio Fisico-Natural de la Isla de Cuba, 2, 279‒484.
Post, A. (1972) Catalogue of type-specimens and designation of lectotypes of the fish-family Paralepididae (Osteichthyes, Myctophoidei). Archiv für Fischereiwissenschaft, 23 (2), 136‒165.
Rofen, R.R. (1966) Family Paralepididae. In: Fishes of the western North Atlantic. Pt 5. Memoirs of the Sears Foundation for Marme Research. No. 1. Yale University, New Haven, pp. 205–461.
https://doi.org/10.2307/j.ctvbcd095.15
Tanaka, S. (1908) Descriptions of eight new species of fishes from Japan. Annotationes Zoologicae Japonenses, 7 (1), 27‒47.
Uyeno, T., Matsuura, K. &Fujii, E. (Eds.) (1983) Fishes trawled off Suriname and French Guiana. Japan Marine Fishery Resource Research Center, Tokyo, 519 pp.