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Issue: Vol. 5536 No. 1: 1 Nov. 2024
Type: Article
Published: 2024-11-01
DOI: 10.11646/zootaxa.5536.1.4
Page range: 123-138
Abstract views: 127
PDF downloaded: 8

The Okuru skink (Oligosoma carinacauda sp. nov) of South Westland, New Zealand—simply elusive or extinct?

46 Sunrise Boulevard; Tawa; Wellington; New Zealand
Honorary Research Associate; Museum of New Zealand Te Papa Tongarewa; Wellington; New Zealand
Reptilia taxonomy extinction conservation Oligosoma carinacauda sp. nov. Okuru skink

Abstract

A small brown, longitudinally striped skink from Okuru, South Westland, New Zealand is described as Oligosoma carinacauda sp. nov. It is distinguished from all congeners by the combination of three supraocular scales and a keeled tail. The species is known only from a single specimen, collected from sphagnum moss within supralittoral dune habitat at Mussel Point, Okuru in 2000. Follow-up targeted surveys undertaken since by expert herpetologists have failed to relocate the species to date. As it is known that many New Zealand lizard species face a perilously uncertain future due to anthropogenic-induced pressures such as habitat loss, predatory pests, and climate change, there are serious concerns for the survival of this species.

 

References

  1. Baber, M., Brejaart, R., Babbitt, K., Lovegrove, T. & Ussher, G. (2009) Response of non-target native birds to mammalian pest control for kokako (Callaeas cinerea) in the Hunua Ranges, New Zealand. Notornis, 54 (4), 176–182.
  2. Barnosky, A.D., Matzke, N., Tomiya, S., Wogan, G.O., Swartz, B., Quental, T.B., Marshall, C., McGuire, J.L., Lindsey, E.L., Maguire, K.C. & Mersey, B. (2011) Has the Earth’s sixth mass extinction already arrived? Nature, 471 (7336), 51–57. https://doi.org/10.1038/nature09678
  3. Barr, B.P., Chapple, D.G., Hitchmough, R.A., Patterson, G.B. & Ngātiwai Trust Board (2021) A new species of Oligosoma (Squamata: Scincidae) from the northern North Island, New Zealand. Zootaxa, 5047 (4), 401–415. https://doi.org/10.11646/zootaxa.5047.4.1
  4. Barwick, R.E. (1959) The life history of the common New Zealand skink Leiolopisma zelandica (Gray, 1843). Transactions of the Royal Society of New Zealand, 83 (3–4), 331–380.
  5. Bell, T.P. & Patterson, G.B. (2008) A rare alpine skink Oligosoma pikitanga n. sp. (Reptilia: Scincidae) from Llawrenny Peaks, Fiordland, New Zealand. Zootaxa, 1882 (1), 57–68. https://doi.org/10.11646/zootaxa.1882.1.3
  6. Burns, R.J., Bell, B.D., Haigh, A., Bishop, P., Easton, L., Wren, S., Germano, J., Hitchmough, R.A., Rolfe, J.R. & Makan, T. (2018) Conservation status of New Zealand amphibians, 2017. New Zealand Threat Classification Series 25. Department of Conservation, Wellington, 7 pp.
  7. Boulenger, G.A. (1887) Catalogue of the lizards in the British Museum (Natural History). Vol. 3. Taylor and Francis, London, 575 pp.
  8. Ceballos, G., Ehrlich, P. & Dirzo, R. (2017) Biological annihilation via the ongoing sixth mass extinction signaled by vertebrate population losses and declines. Proceedings of the National Academy of Sciences of the United States of America, 114 (30), E6089–E6096. https://doi.org/10.1073/pnas.1704949114
  9. Chapple, D.G., Bell, T.P., Chapple, S.N.J., Miller, K.A., Daugherty, C.H. & Patterson, G.B. (2011) Phylogeography and taxonomic revision of the New Zealand cryptic skink (Oligosoma inconspicuum; Reptilia: Scincidae) species complex. Zootaxa, 2782 (1), 1–33. https://doi.org/10.11646/zootaxa.2782.1.1
  10. Chapple, D.G. (2016) Synthesising our current knowledge of New Zealand lizards. In: Chapple, D.G. (Ed.), New Zealand Lizards. Springer International Publishing, Cham, pp. 1–11. https://doi.org/10.1007/978-3-319-41674-8_1
  11. Chapple, D.G., Hitchmough, R.A. (2016) Biogeography of New Zealand lizards. In: Chapple, D.G. (Ed.), New Zealand Lizards. Springer International Publishing, Cham, pp. 109–131. https://doi.org/10.1007/978-3-319-41674-8_5
  12. Cox, N., Young, B.E., Bowles, P., Fernandez, M., Marin, J., Rapacciuolo, G., Böhm, M., Brooks, T.M., Hedges, S.B., Hilton-Taylor, C., Hoffmann, M., Jenkins, R.K.B., Tognelli, M.F., Alexander, G.J., Allison, A., Ananjeva, N.B., Auliya, M., Avila, L.J., Chapple, D.G., Cisneros-Heredia, D.F., Cogger, H.G., Colli, G.R., de Silva, A., Eisemberg, C.C., Els, J., Fong G., A., Grant, T.D., Hitchmough, R.A., Iskandar, D.T., Kidera, N., Martins, M., Meiri, S., Mitchell, N.J., Molur, S., de C. Nogueira, C., Ortiz, J.C., Penner, J., Rhodin, A.G.J., Rivas, G.A., Rödel, M.O., Roll, U., Sanders, K.L., Santos-Barrera, G., Shea, G.M., Spawls, S., Stuart, B.L., Tolley, K.A., Trape, J.F., Vidal, M.A., Wagner, P., Wallace, B.P. & Xie, Y. (2022) A global reptile assessment highlights shared conservation needs of tetrapods. Nature, 605, 285–290. https://doi.org/10.1038/s41586-022-04664-7
  13. Cree, A. (1994) Low annual reproductive output in female reptiles from New Zealand. New Zealand Journal of Zoology, 21, 351–372. https://doi.org/10.1080/03014223.1994.9518005
  14. Cree, A. & Hare, K. (2016) Reproduction and life history of New Zealand lizards. In: Chapple, D.G. (Ed.), New Zealand Lizards. Springer International Publishing, Cham, pp. 169–206. https://doi.org/10.1007/978-3-319-41674-8_7
  15. de Vos, J.M., Joppa, L.N., Gittleman, J.L., Stephens, P.R. & Pimm, S.L. (2014) Estimating the normal background rate of species extinction. Conservation Biology, 29 (2), 452–462. https://doi.org/10.1111/cobi.12380
  16. Dirzo, R., Young, H.S., Galetti, M., Ceballos, G., Isaac, N.J. & Collen, B. (2014) Defaunation in the Anthropocene. Science, 345 (6195), 401–406. https://doi.org/10.1126/science.1251817
  17. Gaze P. (1994) Rare and endangered New Zealand birds: conservation and management. Canterbury University Press, Christchurch, 80 pp.
  18. Gill, B.J. (1985) Subfossil bones of a large skink (Reptilia: Lacertilia) from Motutapu Island, New Zealand. Records of the Auckland Institute and Museum, 22, 69–76. [https://www.jstor.org/stable/42906350]
  19. Hardy, G.S. (1977) The New Zealand Scincidae (Reptilia: Lacertilia); a taxonomic and zoogeographic study. New Zealand Journal of Zoology, 4, 221–325. https://doi.org/10.1080/03014223.1977.9517956
  20. Hitchmough, R. (2013) Summary of changes to the conservation status of taxa in the 2008–11 New Zealand Threat Classification System listing cycle. New Zealand Threat Classification Series 1. Department of Conservation, Wellington, 20 pp.
  21. Hitchmough, R.A., Hoare, J.M., Jamieson, H., Newman, D., Tocher, M.D., Anderson, P.A., Lettink, M. & Whitaker, A.H. (2010) Conservation status of New Zealand reptiles, 2009. New Zealand Journal of Zoology, 37 (3), 203–224. https://doi.org/10.1080/03014223.2010.496487
  22. Hitchmough, R., Anderson, P., Barr, B., Monks, J., Lettink, M., Reardon, J., Tocher, M. & Whitaker, T. (2013) Conservation status of New Zealand reptiles, 2012. New Zealand Threat Classification Series 2. Department of Conservation, Wellington, 16 pp.
  23. Hitchmough, R.A., Patterson, G.B. & Chapple, D.G. (2016a) Putting a name to diversity: taxonomy of the New Zealand lizard fauna. In: Chapple, D.G. (Ed.), New Zealand Lizards. Springer International Publishing, Cham, pp. 87–108. https://doi.org/10.1007/978-3-319-41674-8_4
  24. Hitchmough, R., Barr, B., Lettink, M., Monks, J., Reardon, J., Tocher, M., van Winkel, D. & Rolfe, J. (2016b) Conservation status of New Zealand reptiles, 2015. New Zealand Threat Classification Series 17. Department of Conservation, Wellington, 14 pp.
  25. Hitchmough, R.A., Nielsen, S.V. & Bauer, A.M. (2020) Earning your stripes: a second species of striped gecko in the New Zealand gecko genus Toropuku (Gekkota: Diplodactylidae). Zootaxa, 4890 (4), 578–588. https://doi.org/10.11646/zootaxa.4890.4.9
  26. Hitchmough, R., Barr, B., Knox, C., Lettink, M., Monks, J.M., Patterson, G.B., Reardon, J.T., van Winkel, D., Rolfe, J. & Michel, P. (2021a) Conservation status of New Zealand reptiles, 2021. New Zealand Threat Classification Series 35. New Zealand Department of Conservation, Wellington, 28 pp.
  27. Hitchmough, R.A., Nielsen, S.V., Lysaght, J.A. & Bauer, A.M. (2021b) A new species of Naultinus from the Te Paki area, northern New Zealand. Zootaxa, 4915 (3), 389–400. https://doi.org/10.11646/zootaxa.4915.3.7
  28. Innes, J., Nugent, G., Prime, K. & Spurr, E.B. (2004) Responses of kukupa (Hemiphaga novaeseelandiae) and other birds to mammal pest control at Motatau, Northland. New Zealand Journal of Ecology, 28 (1), 73–81. [https://www.jstor.org/stable/24058214]
  29. IUCN (2012) IUCN Red List Categories and Criteria: Version 3.1. 2nd Edition. Gland, Cham and Cambridge, iv + 32 pp.
  30. IPBES (2019) n.k. In: Brondizio, E.S., Settele, J., Díaz, S. & Ngo, H.T. (Eds.), Summary for policymakers of the global assessment report on biodiversity and ecosystem services of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services. IPBES Secretariat, Bonn, pp. 1–39.
  31. Jewell, T. (2017) Oligosoma awakopaka n. sp. (Reptilia: Scincidae) from Fiordland National Park, New Zealand. BioGecko, 4, 4–19.
  32. Jewell, T.R. (2019) Skinks of southern New Zealand – a field guide. 4th Edition 4. Jewell Publications, Invercargill, 100 pp.
  33. Knox, C., Hitchmough, R.A., Nielsen, S.V., Jewell, T. & Bell, T. (2021) A new, enigmatic species of black-eyed gecko (Reptilia: Diplodactylidae: Mokopirirakau) from North Otago, New Zealand. Zootaxa, 4964 (1), 140–156. https://doi.org/10.11646/zootaxa.4964.1.7
  34. Knox, C., Patterson, G.B. & Chapple, D. (2023) Oligosoma aureocola sp. nov. (Reptilia: Scincidae) from the northern Southland high country of Aotearoa/New Zealand. Zootaxa, 5285 (2), 271–292. https://www.jstor.org/stable/26626233
  35. Knox, C., Chapple, D.G. & Bell, T. (2024) Oligosoma eludens sp. nov. (Reptilia: Scincidae) from the Hawkdun, Ida, and Saint Bathans Ranges of North Otago, Aotearoa/New Zealand. Zootaxa, 5437 (4), 480–494. https://doi.org/10.11646/zootaxa.5437.4.2
  36. Leathwick, J., Morgan, F., Wilson, G., Rutledge, D., McLeod, M. & Johnston, K. (2002) Land Environments of New Zealand: a technical guide. Ministry for the Environment, Hamilton, 244 pp.
  37. Lees, A.C. & Pimm, S.L. (2015) Species, extinct before we know them? Current Biology, 25 (5), 177–180. https://doi.org/10.1016/j.cub.2014.12.017
  38. Lettink, M. (2013) Determination of conservation status of Okuru skink (Oligosoma aff. inconspicuum ‘Okuru’) and Chesterfield skink (Oligosoma aff. infrapunctatum ‘Chesterfield’). Unpublished Report prepared for the Department of Conservation National Office. Department of Conservation National Office, Wellington, 11 pp., appendices.
  39. McCann, C. (1955) The lizards of New Zealand. Gekkonidae and Scincidae. Dominion Museum Bulletin, 17, 1–127.
  40. McEwen, W.M. (1987) Ecological Regions and Districts of New Zealand. 4 Vols. New Zealand Biological Resources Centre, Department of Conservation, Wellington. [unknown pagination]
  41. Meiri, S., Bauer, A.M., Allison, A., Castro-Herrera, F., Chirio, L., Colli, G., Das, I., Doan, T.M., Glaw, F., Grismer, L.L., Hoogmoed, M., Kraus, F., Lebreton, M., Meirte, D., Nagy, Z.T., Nogueira, C.C., Oliver, P., Pauwels, O.S.G., Pincheira-Donoso, D., Shea, G., Sindaco, R., Tallowin, O.J.S., Torres-Carvajal, O., Trape, J.F., Uetz, P., Wagner, P., Wang, Y., Ziegler, T. & Rill, U. (2017) Extinct, obscure or imaginary: The lizard species with the smallest ranges. Diversity and Distributions, 24 (2), 262–273. https://doi.org/10.1111/ddi.12678
  42. Melzer, S., Bell, T. & Patterson, G.B. (2017) Hidden conservation vulnerability within a cryptic species complex: taxonomic revision of the spotted skink (Oligosoma lineoocellatum; Reptilia: Scincidae) from New Zealand. Zootaxa, 4300 (3), 355–379. https://doi.org/10.11646/zootaxa.4300.3.2
  43. Melzer, S., Hitchmough, R.A., Bell, T., Chapple, D.G. & Patterson, G.B. (2019) Lost and found: taxonomic revision of the speckled skink (Oligosoma infrapunctatum; Reptilia; Scincidae) species complex from New Zealand reveals a potential cryptic extinction, resurrection of two species, and description of three new species. Zootaxa, 4623 (3), 441–484. https://doi.org/10.11646/zootaxa.4623.3.2
  44. Nielsen, S.V., Bauer, A.M., Jackman, T.R., Hitchmough, R.A. & Daugherty, C.H. (2011) New Zealand geckos (Diplodactylidae): Cryptic diversity in a post-Gondwanan lineage with trans-Tasman affinities. Molecular Phylogenetics and Evolution, 59 (1), 1–22. https://doi.org/10.1016/j.ympev.2010.12.007
  45. O’Donnell, C.F.J., Borkin, K.M., Christie, J.E., Lloyd, B., Parsons, S. & Hitchmough, R.A. (2018) Conservation status of New Zealand bats, 2017. New Zealand Threat Classification Series 21. New Zealand Department of Conservation, Wellington, 8 pp.
  46. O’Donnell, C.F.J., Borkin, K.M., Christie, J.E., Davidson-Watts, I.B., Dennis, G., Pryde, M. & Pascale, M. (2023) Conservation status of New Zealand bats, 2022. New Zealand Threat Classification Series 41. New Zealand Department of Conservation, Wellington, 18 pp.
  47. Parkes, J.P., Byrom, A.E. & Edge, K.A. (2017) Eradicating mammals on New Zealand island reserves: What is left to do? New Zealand Journal of Ecology, 41, 263–270. [https://www.jstor.org/stable/26198808]
  48. Patterson, G.B. & Bell, T.P. (2009) The Barrier skink Oligosoma judgei n. sp. (Reptilia: Scincidae) from the Darran and Takitimu Mountains, South Island, New Zealand. Zootaxa, 2271 (1), 43–56. https://doi.org/10.11646/zootaxa.2271.1.4
  49. Patterson, G. & Hitchmough, R. (2021) A new alpine skink species (Scincidae: Eugongylinae: Oligosoma) from Kahurangi National Park, New Zealand. Zootaxa, 4920 (4), 495–508. https://doi.org/10.11646/zootaxa.4920.4.2
  50. Pievani, T. (2014) The sixth mass extinction: Anthropocene and the human impact on biodiversity. Rendiconti Lincei, 25 (1), 85–93. https://doi.org/10.1007/s12210-013-0258-9
  51. Pimm, S.L., Jenkins, C.N., Abell, R., Brooks, T.M., Gittleman, J.L., Joppa, L.N., Raven, P.H., Roberts, C.M. & Sexton, J.O. (2014) The biodiversity of species and their rates of extinction, distribution, and protection. Science, 344 (6187), 1246752. https://doi.org/10.1126/science.1246752
  52. Purdie, S. (2022) A naturalist’s guide to the reptiles and amphibians of New Zealand. John Beaufoy Publishing Ltd, Oxford, 176 pp.
  53. Reardon, J.T., Whitmore, N., Holmes, K.M., Judd, L.M., Hutcheon, A.D., Norbury, G. & Mackenzie, D.I. (2012) Predator control allows critically endangered lizards to recover on mainland New Zealand. New Zealand Journal of Ecology, 36 (2), 141–150. [https://www.jstor.org/stable/24060839]
  54. Robertson, H.A., Baird, K., Dowding, J.E., Elliott, G.P., Hitchmough, R.A., Miskelly, C.M., McArthur, N., O’Donnell, C.F.J., Sagar, P.M., Scofield, R.P. & Taylor, G.A. (2017) Conservation status of New Zealand birds, 2016. New Zealand Threat Classification Series 19. Department of Conservation, Wellington, 23 pp.
  55. Scarsbrook, L., Sherratt, E., Hitchmough, R., Fordyce. R.E. & Rawlence N.J. (2021) Skeletal variation in extant species enables systematic identification of New Zealand’s large, subfossil diplodactylids. BMC Ecology and Evolution, 21 (1), 67. https://doi.org/10.1186/s12862-021-01808-7
  56. Sinervo, B., Mendez-De-La-Cruz, F., Miles, D.B., Heulin, B., Bastiaans, E., Villagrán-Santa Cruz, M., Lara-Resendiz, R., Martínez-Méndez, N., Calderón-Espinosa, M.L., Meza-Lázaro, R.N. & Gadsden, H. (2010) Erosion of lizard diversity by climate change and altered thermal niches. Science, 328 (5980), 894–899. https://doi.org/10.1126/science.1184695
  57. Tingley, R., Hitchmough, R.A. & Chapple, D.G. (2013) Life-history traits and extrinsic threats determine extinction risk in New Zealand lizards. Biological Conservation, 165, 62–68. https://doi.org/10.1016/j.biocon.2013.05.028
  58. Towns, D.R. & Daugherty, C.H. (1994) Patterns of range contractions and extinctions in the New Zealand herpetofauna following human colonization. New Zealand Journal of Zoology, 21 (4), 325–339. https://doi.org/10.1080/03014223.1994.9518003
  59. Townsend, A.J., de Lange, P.J., Duffy, C.A.J., Miskelly, C.M., Molloy, J. & Norton, D.A. (2007) New Zealand Threat Classification System manual. Department of Conservation, Wellington, 35 pp.
  60. van Mierlo R. (1998) West Coast skink (Oligosoma sp.) survey: September 1997–May 1998. Unpublished report prepared for West Coast Conservancy. New Zealand Department of Conservation, Hokitika, 23 pp.
  61. van Winkel, D., Baling, M. & Hitchmough, R. (2018) Reptiles and Amphibians of New Zealand: a field guide. Auckland University Press, Auckland, 376 pp.
  62. van Winkel, D., Wells, S., Harker, N. & Hitchmough, R. (2023) On the sand and among the crowds: a new species of Woodworthia gecko (Reptilia: Diplodactylidae) from Auckland, Aotearoa/ New Zealand. Zootaxa, 5374 (2), 263–294. https://doi.org/10.11646/zootaxa.5374.2.7
  63. Waters, C.N., Zalasiewicz, J., Summerhayes, C., Barnosky, A.D., Poirier, C., Gałuszka, A., Cearreta, A., Edgeworth, M., Ellis, E.C., Ellis, M. & Jeandel, C. (2016) The Anthropocene is functionally and stratigraphically distinct from the Holocene. Science, 351 (6269). [published online] https://doi.org/10.1126/science.aad2622
  64. Whitaker, A.H. (1984) Hoplodactylus kahutarae n. sp. (Reptilia : Gekkonidae) from the Seaward Kaikoura Range, Marlborough, New Zealand. New Zealand Journal of Zoology, 11 (3), 259–270. https://doi.org/10.1080/03014223.1984.10428239
  65. Whitaker, T., Chapple, D.G., Hitchmough, R.A., Lettink, M. & Patterson, G.B. (2018) A new species of scincid lizard in the genus Oligosoma (Reptilia: Scincidae) from the mid-Canterbury high country, New Zealand. Zootaxa, 4377 (2), 269–79. https://doi.org/10.11646/zootaxa.4377.2.7
  66. Wiles, A. (2014) Habitat preferences of Oligosoma “Whirinaki” within Bream Head Scenic Reserve, Whangarei, Northland, New Zealand. Report to Department of Conservation, Wellington, 26 pp.
  67. Wilmshurst, J.M., Atholl, J., Anderson, A.J., Thomas, F.G., Higham, T.F.G. & Worthy, T.H. (2008) Dating the late prehistoric dispersal of Polynesians to New Zealand using the commensal Pacific rat. Proceedings of the National Academy of Sciences, 105 (22), 7676–7680. https://doi.org/10.1073/pnas.080150710
  68. Worthy, T.H. (1991) Fossil skink bones from Northland, New Zealand, and description of a new species of Cyclodina, Scincidae. Journal of the Royal Society of New Zealand, 21 (4), 329–348. https://doi.org/10.1080/03036758.1991.10420831
  69. Worthy, T.H. (2016) A review of the fossil record of New Zealand lizards. In: Chapple, D.G. (Ed.), New Zealand Lizards. Springer International Publishing, Cham, pp. 65–86. https://doi.org/10.1007/978-3-319-41674-8_3