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Issue: Vol. 5506 No. 1: 5 Sept. 2024
Type: Article
Published: 2024-09-05
DOI: 10.11646/zootaxa.5506.1.2
Page range: 35-57
Abstract views: 434
PDF downloaded: 128

Redescription of the eel Ilyophis arx Robins, 1976 (Anguilliformes: Synaphobranchidae: Ilyophinae) with a description of a new species of Ilyophis, and a taxonomic synopsis of the Ilyophinae

Department of Vertebrate Zoology; National Museum of Natural History; Smithsonian Institution; Washington; D.C.; U.S.A.
Smithsonian Institution; Museum Support Center; Suitland; MD; U.S.A.
Muttlebury’s Mead; Chard Street; Thorncombe; Chard; TA20 4NB; U.K.
Marine Vertebrate Collection; Scripps Institution of Oceanography; University of California San Diego; La Jolla; California; U.S.A.
Ichthyology Section; Department of Marine Zoology; Senckenberg Research Institute and Museum of Nature; Senckenberg Society of Nature Research; Frankfurt am Main; Germany.
Pisces Anguilliformes Synaphobranchidae Ilyophinae taxonomy

Abstract

Ilyophis arx Robins, 1976 is redescribed based on the four type specimens from south of the Galapagos Islands and 21 additional specimens: 12 specimens from the western Clarion Clipperton Zone in the central Pacific Ocean, four specimens from the eastern Pacific Ocean, and five specimens from several localities in the central North Pacific Ocean. A new species, Ilyophis maclainei sp. nov., is described from the eastern North Atlantic. A taxonomic synopsis of the subfamily Ilyophinae is presented, and a key to the known species is provided.

 

References

  1. Alcock, A.W. (1889) Natural history notes from H. M. Indian marine survey steamer `Investigator,' Commander Alfred Carpenter, R. N., D. S. O., commanding.—No. 13. On the bathybial fishes of the Bay of Bengal and neighbouring waters, obtained during the seasons 1885-1889. Annals and Magazine of Natural History, Series 6, 4 (24), 450–461. https://doi.org/10.1080/00222938909460563
  2. Alcock, A.W. (1891) Class Pisces. In: II.—Natural history notes from H.M. Indian marine survey steamer `Investigator,' Commander R. F. Hoskyn, R. N., commanding. Series II., No. 1. On the results of deep-sea dredging during the season 1890–91. Annals and Magazine of Natural History, Series 6, 8 (43/44), 16–34 + 119–138, pls. 7–8. https://doi.org/10.1080/00222939109460385
  3. Barnard, K.H. (1923) Diagnoses of new species of marine fishes from South African waters. Annals of the South African Museum, 13 (Pt 8, No. 14), 439–445.
  4. Biscoito, M., Segonzac, M., Almeida, A.J., Desbruyères, D., Geistdoerfer, P., Turnipseed, M. & Van Dover, C. (2002) Fishes from the hydrothermal vents and cold seeps - An update. Cahiers de Biologie Marine, 43 (3 & 4), 359–362.
  5. Biscoito, M., Almeida, A.J. & Segonzac, M. (2006), Preliminary biological characterization of the Saldanha hydrothermal field at the Mid-Atlantic Ridge (36º34'N, 32º26'W, 2200 m). Cahiers de Biologie Marine, 47 (4), 421–427.
  6. Böhlke, E.B. (1982) Vertebral formulae for type specimens of eels (Pisces: Anguilliformes). Proceedings of the Academy of Natural Sciences, Philadelphia, 134, 31–49.
  7. Böhlke, E.B. (1984) Catalog of type specimens in the ichthyological collection of the Academy of Natural Sciences of Philadelphia. Academy of Natural Sciences of Philadelphia Special Publication, 14, 1–246.
  8. Böhlke, E.B. (1989) Methods and terminology. In: Böhlke, E.B. (Ed.), Fishes of the Western North Atlantic. Memoir of the Sears Foundation for Marine Research, 1 (Part 9), pp. 1–7. https://doi.org/10.2307/j.ctvbcd0dm.4
  9. Böhlke, J.E. (1951) Meadia, a new genus for the West Pacific dysommid eel, Dysomma abyssale Kamohara. Stanford Ichthyological Bulletin, 4 (1), 6.
  10. Böhlke, J.E. and Hubbs, C.L. (1951) Dysommina rugosa, an apodal fish from the North Atlantic, representing a distinct family. Stanford Ichthyological Bulletin, 4 (1), 7–10.
  11. Barnard, K.H. (1923) Diagnoses of new species of marine fishes from South African waters. Annals of the South African Museum, 13 (Pt 8, No. 14), 439–445.
  12. Causse, R., Biscoito, M. & Briand, P. (2005) First record of the deep-sea eel Ilyophis saldanhai (Synaphobranchidae, Anguilliformes) from the Pacific Ocean. Cybium, 29 (4), 413–416.
  13. Chen, J.T.-F. & Weng, H.T.-C. (1967) A review of the apodal fishes of Taiwan. Biological Bulletin of Tunghai University, Ichthyology Series, 6, 135–220. [also appeared as a separate, pp. 1–86]
  14. Chen, Y.-Y. & Mok, H.-K. (1995) Dysomma opisthoproctus, a new synaphobranchid eel (Pisces, Synaphobranchidae) from the northeastern coast of Taiwan. Copeia, 1995, 927–931. https://doi.org/10.2307/1447041
  15. Chen, Y.-Y. & Mok, H.-K. (2001) A new synaphobranchid eel, Dysomma longirostrum (Anguilliformes: Synaphobranchidae), from the northeastern coast of Taiwan. Zoological Studies, 40 (2), 79 –83.
  16. Facciolà, L. (1887) Intorno a due Lepadogastrini ed un nuovo Nettastoma del mare di Sicilia. Il Naturalista Siciliano, Giornale di scienze naturali, 6, 163–167.
  17. Fricke, R., Golani, D., Appelbaum-Golani, B. & Zajonz, U. (2018) Dysomma alticorpus, a new species of cutthroat eel from the Gulf of Aqaba, Red Sea (Teleostei: Synaphobranchidae). Comptes Rendus Biologies, 341 (2), 111–119. https://doi.org/10.1016/j.crvi.2017.10.005
  18. Gilbert, C.H. (1891) Descriptions of apodal fishes from the tropical Pacific. In: Scientific results of explorations by the U. S. Fish Commission steamer Albatross. Proceedings of the United States National Museum, 14 (856), 347–352. https://doi.org/10.5479/si.00963801.14-856.347
  19. Gill, T.N. (1893) Families and subfamilies of fishes. Memoirs of the National Academy of Science, 6 (6), 127–138. https://doi.org/10.5962/bhl.part.6303
  20. Ginsburg, I. (1951) The eels of the northern Gulf Coast of the United States and some related species. Texas Journal of Science, 3 (3), 431–485.
  21. Grassi, G.B. & Calandruccio, S. (1896) Sullo sviluppo dei murenoidi. Atti della Accademia Nazionale dei Lincei, 5 (1), 347–349.
  22. Greenwood, P.H., Rosen, D.E., Weitzman, S.H. & Myers, G.S. (1966) Phyletic studies of teleostean fishes, with a provisional classification of living forms. Bulletin of the American Museum of Natural History, 131 (4), 341–455.
  23. Ho, H.-C., Smith, D.G. & Tighe, K.A. (2015) Review of the arrowtooth eel genera Dysomma and Dysommina in Taiwan, with the description of a new species (Anguilliformes: Synaphobranchidae Ilyophinae). Zootaxa, 4060 (1), 86–104. https://doi.org/10.11646/zootaxa.4060.1.12
  24. Ho, H.-C. & Tighe, K.A. (2018) Three new species of the cutthroat eel genus Dysomma, with comments on the variation of D. taiwanense (Anguilliformes: Synaphobranchidae). Zootaxa, 4454 (1), 52–67. https://doi.org/10.11646/zootaxa.4454.1.7
  25. Jordan, D.S. & Davis, B.M. (1891) A preliminary review of the apodal fishes or eels inhabiting the waters of America and Europe. Report of the Commissioner, United States Commission of Fish and Fisheries, 16 (Art. 9), 581–677. [for 1888]
  26. Kamohara, T. (1938) On the offshore bottom-fishes of Prov. Tosa, Shikoku, Japan. Maruzen Kobushiki Kaisha, Tokyo, 86 pp.
  27. Karmovskaya, E.S. (2003) New records of synaphobranchid eels (Synaphobranchidae, Anguilliformes) collected off New Caledonia and adjacent regions, with description of a new species of Atractodenchelys. Voprosy Ikhtiologii, 43 (4), 437–446. [in Russian, English translation in Journal of Ichthyology, 43 (7), 491–500]
  28. Karmovskaya, E.S. & Parin, N.V. (1999) A new species of the genus Ilyophis (Synaphobranchidae, Anguilliformes) from the Broken Spur Hydrothermal Vent Field (MidAtlantic Submarine Ridge). Voprosy Ikhtiologii, 39 (3), 316–325. [in Russian. English translation in Journal of Ichthyology, 39 (5), 353–362]
  29. Karrer, C. (1983) Anguilliformes du Canal de Mozambique (Pisces, Teleostei). Faune Tropicale, 23, 1–116.
  30. Karrer, C. & Klausewitz, W. (1982) Tiefenwasser- und Tiefseefische aus dem Roten Meer. II. Dysomma fuscoventralis n. sp., ein Tiefsee-Aal aus dem zentralen Roten Meer (Teleostei: Anguilliformes: Synaphobranchidae: Dysomminae). Senckenbergiana Biologica, 62 (4/6), 199–203. [1981]
  31. Leitner, A.B., Durden, J.M., Smith, C.R., Klingberg, E.D. & Drazen, J.C. (2021a) Synaphobranchid eel swarms on abyssal seamounts: largest aggregation of fishes ever observed at abyssal depths. Deep Sea Research Part I: Oceanographic Research Papers, 167, 103423. https://doi.org/10.1016/j.dsr.2020.103423
  32. Leitner, A.B., Drazen, J.C. & Smith, C.R (2021b) Testing the seamount refuge hypothesis for predators and scavengers in the western Clarion-Clipperton Zone. Frontiers in Marine Science, 8, 636305. https://doi.org/10.3389/fmars.2021.636305
  33. Lin, S.-Y. (1933) A new genus and three new species of marine fish from Hainan Island. Lingnan Science Journal, Canton, 12 (1), 93–96.
  34. Matsubara, K. (1936) Studies on the deep-sea fishes of Japan. I. On a new apodal fish, Dysomma japonicus, with an emendation of the genus Dysomma. Zoological Magazine Tokyo, 48 (11), 960–962.
  35. Merrett, N.R. & Saldanha, L. (1985) Aspects of the morphology and ecology of some unusual deep-sea eels (Synaphobranchidae, Derichthyidae and Nettastomatidae) from the eastern North Atlantic. Journal of Fish Biology, 27, 719–747. https://doi.org/10.1111/j.1095-8649.1985.tb03216.x
  36. Mok, H.-K., Lee, C.-Y. & Chan, H.-J. (1991) Meadia roseni, a new synaphobranchid eel from the coast of Taiwan (Anguilloidea: Synaphobranchidae). Bulletin of Marine Science, 48, 39–45.
  37. Norman, J.R. (1939) Fishes. The John Murray Expedition 1933-34. Scientific Reports, John Murray Expedition, 7 (1), 1–116.
  38. Prokofiev, A.M. (2019) Three new eels of the genus Dysomma Alcock, 1889 from off Phuket Island, Thailand (Teleostei: Anguilliformes: Synaphobranchidae). Munis Entomology & Zoology, 14 (2), 317–325.
  39. Robins, C.H. & Robins, C.R. (1970) The eel family Dysommidae (including Dysomminidae and Nettodaridae), its osteology and composition, including a new genus and species. Proceedings of the Academy of Natural Sciences of Philadelphia, 127, 249–280.
  40. Robins, C.H. & Robins, C.R. (1976) New genera and species of dysommine and synaphobranchine eels (Synaphobranchidae) with an analysis of the Dysomminae. Proceedings of the Academy of Natural Sciences of Philadelphia, 122, 293–335.
  41. Robins, C.H. & Robins, C.R. (1989) Family Synaphobranchidae. In: Böhlke, E.B. (Ed.), Fishes of the Western North Atlantic. Memoir of the Sears Foundation for Marine Research, 1 (Part 9), pp. 207–253. https://doi.org/10.2307/j.ctvbcd0dm.12
  42. Saldanha, L. & Merrett, N.R. (1982) A new species of the deep-sea eel genus llyophis Gilbert (Synaphobranchidae) from the eastern North Atlantic, with comments on its ecology and intrafamilial relationships. Journal of Fish Biology, 21, 623–636. https://doi.org/10.1111/j.1095-8649.1982.tb02866.x
  43. Saruwatari, T., López, J.A. & Pietsch, T.W. (1997) Cyanine Blue: a versatile and harmless stain for specimen observation. Copeia, 1997 (4), 840–841. https://doi.org/10.2307/1447302
  44. Schmidt, J. (1913) On the identification of muraenoid larvae in their early ("prelaptocephaline") stages. Meddelelser fra Kommissionen for havundersøgelser, Serie Fiskeri, 4 (2), 1–14.
  45. Smith, D.G. (1989) Family Chlopsidae. In: Böhlke, E.B. (Ed.), Fishes of the Western North Atlantic. Memoir of the Sears Foundation for Marine Research, 1 (Part 9), pp. 72–97 https://doi.org/10.2307/j.ctvbcd0dm.9
  46. Smith, D.G. (1999) Synaphobranchidae. In: Carpenter, K.E. & Niem, V.H. (Eds.), FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Vol. 3. Batoid fishes, chimaeras and bony fishes. Part 1 (Elopidae to Linophrynidae). FAO, Rome, pp. 1658–1661
  47. Sulak, K.J. & Shcherbachev, Y.N. (1997) Zoogeography and systematics of six deep-living genera of synaphobranchid eels, with a key to taxa and description of two new species of Ilyophis. Bulletin of Marine Science, 60 (3), 1158–1194.
  48. Tashiro, F. & Chen, W.-J. (2022) Ilyophis singularis (Synaphobranchidae; Ilyophinae), a new deep-sea eel from the South China Sea. Ichthyological Research, 70, 332–336. [first published online, 18 August 2022] https://doi.org/10.1007/s10228-022-00887-w
  49. Tighe, K.A., Ho, H.-C. & Hatooka, K. (2018) A new species of the genus Dysommina (Teleostei: Anguilliformes: Synaphobranchidae: Ilyophinae) from the Western Pacific. Zootaxa, 4454 (1), 43–51. https://doi.org/10.11646/zootaxa.4454.1.6
  50. Vo, Q.V. & Ho, H.-C. (2020) A new species of Atractodenchelys (Synaphobranchidae, Anguilliformes) from Vietnam. Zootaxa, 4742 (3), 588–594. https://doi.org/10.11646/zootaxa.4742.3.12
  51. Vo, Q.V., Ho, H.-C., Dao, H.V. & Tran, H.H.T. (2021) A new arrowtooth eel of genus Meadia (Synaphobranchidae: Ilyophinae) from Vietnam, South China Sea. Zootaxa, 4952 (1), 181–191. https://doi.org/10.11646/zootaxa.4952.1.11
  52. Vo, Q.V., Ho, H.-C., Dao, H.V. & Tran, T.C. (2024) New species of the eel genera Dysomma and Dysommina from Vietnam, South China Sea (Family Synaphobranchidae). Journal of Fish Biology, 104 (4), 1067–1078 [first published on-line, 4 January 2024] https://doi.org/10.1111/jfb.15638
  53. Whitley, G.P. (1951) Studies in ichthyology. No. 15. Records of the Australian Museum, 22 (4), 389–408.