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Higher TaxaScincidae, Eugongylinae (Eugongylini), Scincoidea, Sauria, Squamata (lizards)
Common NamesE: Te Kakahu skink 
Oligosoma inconspicuum ‘Te Kakahu’ CHAPPLE et al. 2009: 485
Oligosoma sp. 6 (Te Kakahu skink) JEWELL 2008: 89
Oligosoma tekakahu — HITCHMOUGH et al. 2016 
DistributionNew Zealand

Type locality: Chalky Island (Te Kakahu), Fiordland (46° 03’S, 166° 31’E).  
Reproductionviviparous (not imputed, fide Zimin et al. 2022) 
TypesHolotype: NMNZ RE006879, adult male (coll. T. Bell, January 2008). 
DiagnosisDiagnosis: Oligosoma tekakahu can be distinguished from other related Oligosoma species through a combination of characters (Figure 4). Compared to O. maccanni, O. tekakahu has a glossy appearance, with brown predominating whereas O. maccanni has a greyer ground colour. The ear opening in O. maccanni often has large projecting scales on the interior margin, whereas these are minimal in O. tekakahu. The number of subdigital lamellae in O. maccanni (19–28) does not overlap with O. tekakahu (16). Longitudinal striping is more pronounced in adjacent populations of O. polychroma, which almost always have a pale stripe on the outside of the forelimbs and a prominent mid-dorsal stripe which O. tekakahu lacks. The ear opening in O. polychroma often has prominent projecting scales on the interior margin. The number of subdigital lamellae in O. tekakahu (16) is less than in any other member of the O. inconspicuum species complex. The number of ventral scales in O. tekakahu (68) is fewer than O. toka sp. nov. (70–88). Oligosoma tekakahu has a larger head relative to SVL than any other member of the O. inconspicuum species complex (its head length, 9.8 mm, was longer than any other specimen measured in the study). 
CommentAbundance: only known from its original description (Meiri et al. 2017). 
EtymologyFrom Te Kakahu, the Maori name for the type locality (= Chalky Island). 
  • CHAPPLE, DAVID G., TRENT P. BELL, STEPHANIE N.J. CHAPPLE, KIMBERLY A. MILLER, CHARLES H. DAUGHERTY & GEOFF B. PATTERSON 2011. Phylogeography and taxonomic revision of the New Zealand cryptic skink (Oligosoma inconspicuum; Reptilia: Scincidae) species complex. Zootaxa 2782: 1–33
  • 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.
  • Meiri, Shai; Aaron M. Bauer, Allen Allison, Fernando Castro-Herrera, Laurent Chirio, Guarino Colli, Indraneil Das, Tiffany M. Doan, Frank Glaw, Lee L. Grismer, Marinus Hoogmoed, Fred Kraus, Matthew LeBreton, Danny Meirte, Zoltán T. Nagy, Cristiano d 2017. Extinct, obscure or imaginary: the lizard species with the smallest ranges. Diversity and Distributions - get paper here
  • van Winkel, D., 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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