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Oligosoma polychroma (PATTERSON & DAUGHERTY, 1990)

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Higher TaxaScincidae, Eugongylinae (Eugongylini), Scincoidea, Sauria, Squamata (lizards)
Subspecies 
Common NamesE: Southern grass skink, common New Zealand skink 
SynonymLeiolopisma nigriplanatre polychroma PATTERSON & DAUGHERTY 1990
Oligosoma nigriplantare polychroma — PATTERSON & DAUGHERTY 1995
Oligosoma nigriplantare polychroma — HICKSON et al. 2000
Oligosoma polychroma — JEWELL 2008
Oligosoma polychroma — HITCHMOUGH et al. 2016
Oligosoma aff. polychroma — FRANK 2017
Oligosoma aff. polychroma Clade 1a — BARRETT 2017
Oligosoma polychroma — GOLLIN et al. 2020
Oligosoma chionochloescens — TITUS 2022
Oligosoma chionochloescens — PURDIE 2023 
DistributionNew Zealand (North Island [Hawkes Bay, Wellington], South Island)

Type locality: Pukerua Bay, 41° 03’ S, 174° 54’ E.  
Reproductionviviparous (not imputed, fide Zimin et al. 2022) 
TypesHolotype: NMNZ R2080 
Diagnosis 
CommentSynonymy: Titus 2022 stated that Oligosoma chionochloescens was “previously calssified as Oligosoma aff. polychroma Clade 5”, mentioning “Jewell, 2022: 12” as source but without any citation.

Variation: three colour morphs of the southern grass skink (O. aff. polychroma Clade 5) 
References
  • BARRETT, PAUL 2017. Observations of insect egg predation by the northern grass skink Oligosoma aff. polychroma Clade 1a. BioGecko (4): 70-72
  • 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 - get paper here
  • 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
  • Cree, Alison and Kelly M. Hare 2016. Reproduction and Life History of New Zealand Lizards. in: Chapple, D.G. (ed). New Zealand Lizards. Springer, pp. 169-206 - get paper here
  • FRANK, HERMANN 2017. Salvage of southern grass skinks (Oligosoma aff. polychroma Clade 5) in an old riverbed of the Rangitata South Branch, Canterbury, New Zealand. BioGecko (4): 35-48
  • Gollin, J. F., Gorman, N., & Armstrong, D. P. 2020. Twenty years on: changes in lizard encounter rates following eradication of rats from Kāpiti Island. New Zealand Journal of Ecology, 45(1), [2021] - get paper here
  • HICKSON, Robert E.; KERRYN E. SLACK AND PETER LOCKHART 2000. Phylogeny recapitulates geography, or why New Zealand has so many species of skinks. Biological Journal of the Linnean Society 70: 415–433 - 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, Tony 2008. A Photographic Guide to Reptiles and Amphibians of New Zealand [with corrections and comments in Chapple & Hitchmough 2009]. New Holland Publishers (NZ) Ltd,Auckland, 143 pp.
  • LETTINK, MARIEKE; JIM YOUNG & JOANNE MONKS. 2022. Comparison of footprint tracking and pitfall trapping for detecting skinks. New Zealand Journal of Ecology 46(2): 1–5. - get paper here
  • NORBURY, GRANT; DEBORAH J. WILSON, DEAN CLARKE, ELLA HAYMAN, JAMES SMITH & SIMON HOWARD. 2022. Density-impact functions for invasive house mouse (Mus musculus) effects on indigenous lizards and invertebrates. Biological Invasions 2022: 1–15. - get paper here
  • Patterson, G.B. and Daugherty, C.H. 1990. Four new species and one new subspecies of skinks, genus Leiolopisma (Reptilia: Lacertilia: Scincidae) from New Zealand. Journal of the Royal Society of New Zealand 20 (1): 65-84 [erratum p. 252] - get paper here
  • Patterson, G.B.; Daugherty, C.H. 1995. Reinstatement of the genus Oligosoma (Reptilia: Lacertilia: Scincidae). J. Royal Soc. New Zealand 25 (3): 327-331 - get paper here
  • Purdie, Samuel 2023. Reptile/Invertebrate Survey - Pisa Range. Southern Lakes Sanctuary Trust, New Zealand Department of Conservation - get paper here
  • REES, GLENDA 2014. In dire straits: grey-faced heron predating on southern grass skink (Oligosoma polychroma Clade 5). BioGecko (2): 50 - get paper here
  • VERHAEGH, SJUUL 2015. Photo Gallery: White-faced herons predating on southern grass skinks. BioGecko (3): 74
  • Winkel, D. van, Baling, M. & Hitchmough, R. 2018. Reptiles and Amphibians of New Zealand: A field guide. Auckland University Press, Auckland, 376 pp.
  • Zimin, A., Zimin, S. V., Shine, R., Avila, L., Bauer, A., Böhm, M., Brown, R., Barki, G., de Oliveira Caetano, G. H., Castro Herrera, F., Chapple, D. G., Chirio, L., Colli, G. R., Doan, T. M., Glaw, F., Grismer, L. L., Itescu, Y., Kraus, F., LeBreton 2022. A global analysis of viviparity in squamates highlights its prevalence in cold climates. Global Ecology and Biogeography, 00, 1–16 - get paper here
 
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