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Oligosoma robinsoni WELLS & WELLINGTON, 1985

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Higher TaxaScincidae, Eugongylinae (Eugongylini), Scincoidea, Sauria, Squamata (lizards)
Common NamesE: Crenulate skink, Hokitika skink, Cobble skink 
SynonymOligosoma robinsoni WELLS & WELLINGTON 1985
Leiolopisma infrapunctatum — HARDY 1977
Leiolopisma infrapunctatum — OWEN 1997
Oligosoma robinsoni — JEWELL & MORRIS 2011
Oligosoma infrapunctatum — GREAVES et al. 2008
Oligosoma infrapunctatum — CHAPPLE et al. 2009
Oligosoma infrapunctatum — PERROTT et al. 2011
Oligosoma infrapunctatum — TOWNS et al. 2002
Oligosoma aff. infrapunctatum “crenulate” — HITCHMOUGH et al. 2007; Oligosoma aff. infrapunctatum “crenulate” — HITCHMOUGH et al. 2010
Oligosoma aff. infrapunctatum “crenulate” — HITCHMOUGH et al. 2013
Oligosoma aff. infrapunctatum “crenulate” — BELL 2014
Oligosoma aff. infrapunctatum “crenulate” — HITCHMOUGH et al. 2016a
Oligosoma aff. infrapunctatum “crenulate” — HITCHMOUGH et al. 2016b
Oligosoma aff. infrapunctatum “crenulate” — VAN WINKEL et al. 2018
Oligosoma robinsoni — MELZER et al. 2019: 464 
DistributionNew Zealand, North Island (from the King Country, Waikato, Taupo, Rotorua and Bay of Plenty)

Type locality: Moutohorā (Whale Island) (37° 52’S, 176° 58’E)  
TypesHolotype: NMNZ RE004443 (S801) (coll. M. Imber, 01 Sep 1970). 13 other NMNZ specimens and their localities are given in Melzer 2019: 600 (erratum). 
DiagnosisDiagnosis. O. robinsoni can be distinguished from other species in the O. infrapunctatum species complex by a combination of characters (Figure 4a–j). In O. salmo sp. nov. subdigital lamellae usually <20 versus usually 20 or above in O. robinsoni. The VS count is 69 or below in O. salmo sp. nov. versus usually 69 or greater; supraciliaries 5 only (O. salmo sp. nov.) versus usually >5; ventral speckling much more pronounced in O. robinsoni than O. salmo sp. nov. There are statistical differences between O. newmani and O. robinsoni (AG/SF). Subdigital lamellae are usually 20 or below in O. newmani versus 20 or above in O. robinsoni. O. robinsoni has a longer tail relative to SVL compared with O. newmani. O. robinsoni differs from O. albornense sp. nov. in having a VS count usually 69 or greater versus 69 or below (O. albornense sp. nov.); upper ciliaries 6 or less (O. albornense sp. nov.) versus usually 6 or more; ventral speckling much more pronounced in O. robinsoni than O. albornense sp. nov. It differs from O. auroraensis sp. nov. in having subdigital lamellae usually 21 or above (O. auroraensis sp. nov.) versus usually 21 or below; VS usually 75 or less in O. robinsoni versus usually 75 or greater in O. auroraensis sp. nov.; mid-dorsal stripe to base of tail in O. robinsoni, past base of tail in O. auroraensis sp. nov. (Melzer et al. 2019: 465). 
CommentHabitat: dense grassland, scrub, shrublands, fernland and forest edge habitats; the species can also be found on the coast on boulder beaches, and beneath rocks and logs in grasses above high tide mark. 
EtymologyNamed for Professor E.S. Robinson of the School of Biological Sciences, Macquarie University, Sydney in recognition of his herpetological research (Wells & Wellington 1985). 
  • Chapple, D.G.; Hitchmough, R.A.; Jewell, T.R. 2009. Taxonomic instability of reptiles and frogs in New Zealand: information to aid the use of Jewell (2008) for species identification [a comment on King 2009 and further commented by Jewell]. New Zealand Journal of Zoology 36: 59–71
  • Chapple, David G.; Peter A. Ritchie, Charles H. Daugherty 2009. Origin, diversification, and systematics of the New Zealand skink fauna (Reptilia: Scincidae). Molecular Phylogenetics and Evolution 52 (2): 470-487 - get paper here
  • Greaves, Stephanie N.J.; David G. Chapple, Charles H. Daugherty, Dianne M. Gleeson and Peter A. Ritchie 2008. Genetic divergences pre-date Pleistocene glacial cycles in the New Zealand speckled skink, Oligosoma infrapunctatum. Journal of Biogeography 35: 853–864 - get paper here
  • Hardy, G. 1977. The New Zealand Scincidae: a taxonomic study. New Zealand Journal of Zoology 4: 221-325 - get paper here
  • Hitchmough, R. A., Hoare, J.M., Jamieson, H., Newman, D., Tocher, M.D. and Anderson, P. J. 2010. Conservation status of New Zealand reptiles, 2009. New Zealand Journal of Zoology 37 (3): 203-224 - get paper here
  • Hitchmough, R., Anderson, P., Barr, B., Monks, J., Lettink, M., Reardon, J., Tocher, M. & Whitaker, T. 2013. Conservation status of New Zealand reptiles, 2012. In: New Zealand Threat Classification Series 2. Department of Conservation, Wellington, pp. 1–16
  • Hitchmough, R., Bull, L. & Cromarty, P. 2007. New Zealand Threat Classification System lists—2005. Department of Conservation, Wellington, 194 pp
  • Hitchmough, Rod; Ben Barr, Marieke Lettink, Jo Monks, James Reardon, Mandy Tocher, Dylan van Winkel and Jeremy Rolfe 2016. Conservation status of New Zealand reptiles, 2015. New Zeland Department of Conservation, 14 pp. - get paper here
  • Hitchmough, Rodney A.; Geoffrey B. Patterson, and David G. Chapple 2016. Putting a Name to Diversity: Taxonomy of the New Zealand Lizard Fauna. in: Chapple, D.G. (ed). New Zealand Lizards. Springer, pp. 87-108 - get paper here
  • Jewell, T. & Morris, R. 2011. A photographic guide to reptiles & amphibians of New Zealand. New Holland Publishers (NZ) Ltd, Auckland, 143 pp
  • MELZER, SABINE; ROD A. HITCHMOUGH, TRENT BELL, DAVID G. CHAPPLE & GEOFF B. PATTERSON 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 [erratum in Zootaxa 4688 (4): 599-600] - get paper here
  • Owen, K. 1997. Mokoia Island—the transformation of an inland island now home to endangered species. in: Johnson, T. & Boyes, P. (Eds.), New Zealand Conservation Management group Annual Conference proceedings, Rotorua, 1997, pp. 74–87
  • Perrott, J., Schragen, S., Thoresen, J. & Jayasinghe, A. 2011. Speckled skink bait experiments on Mokoia Island, Lake Rotorua. in: Hare, K. M. (Ed.), Abstracts of papers presented at the 14th Biennial Conference of the Society for Research on Amphibians and Reptiles in New Zealand, Tautuku, Otago, New Zealand, 1 New Zealand Journal of Zoology, 38 (3), pp. 276–277 - get paper here
  • Towns, D.R.; Neilson, K. and Whitaker, A.H. 2002. North Island Oligosoma spp. Skink recovery plan. Threatened species recovery plan 48. Department of Conservation, Wellington
  • van Winkel, D., Baling, M. & Hitchmough, R. 2018. Reptiles and Amphibians of New Zealand: A field guide. Auckland University Press, Auckland, 376 pp.
  • Wells, R. W. and Wellington, C. R. 1985. A synopsis of the Amphibia and Reptilia of Australia. Australian Journal of Herpetology, Supplementary Series (1): 62-64.
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