Analyses by Greaves et al (2008) revealed four strongly supported clades within O. infrapunctatum. These clades were largely allopatric, except on the west coast of the South Island, where representatives from all four clades were found. Clade 1 is known from the Southern North Island (Mt Bruce), Cook Strait, Nelson and coastal Westland. Clade 2 (a) also known as the crenulate skink of Jewell (2008) is known from Westland, and Clade 2 (b) is known from the Bay of Plenty and Central North Island. Clade 3 (a) contains the 'Chesterfield skink' (see O. sp. 'Chesterfield') and Clade 3 (b) contains skinks from the Alborn mine. Clade 4 corresponds to O. sp. 'Southern North Island'. Cobble skink: It is unclear which Clade the 'Cobble skink' of Jewell 2008 belongs to. Paparoa skink: Jewell (2008) lists the 'Paparoa skink' as a distinct taxon. However, Chapple & Hitchmough (2009) consider it more likely that this represents a morphologically aberrant population (i.e. anti-cryptic species) of O. infrapunctatum, as demonstrated by molecular data, rather than a distinct species.
The scientific name means 'spotted below'.
Not yet available.
There is considerable variation in morphology and DNA throughout the range of O. infrapunctatum and future taxonomic revision is likely. See the section on 'Cryptic Species Complex' in this syopses.
Not available yet. 106 mm SVL (Towns et al 2002)
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