Herpetofaunal category
Authority
Robb, 1970
Previous scientific names
Cyclodina alani
Common names
Robust skink
Oligosoma alani
Image attribution

Description

A large (up to 142 mm snout to vent) and thickset skink with short limbs and toes (northern individuals of the species are particularly robust). Dorsal (upper) surface mid to dark brown or pinkish brown with a series of irregular large blotches. Blotches are usually pale cream to yellow/brown, sometimes with a dark brown edge. Flanks are light grey to grey brown with blotches of a similar appearance to those on the back, Some individuals also have black and white markings above the shoulders. Belly colour ranges from yellow to a vivid reddish pink, sometimes with dark flecks. Throat cream, often with dark flecks. A yellow, black edged ‘tear drop’ is present below each eye. Robust skink have blunt snouts and large dark eyes. The base of the tail is very thick and tapers abruptly.

Life expectancy

Up to 30 years.

Distribution

Once widespread throughout the North Island, robust skink are now confined to a few islands from the Bay of Plenty to Aupouri Peninsula.

Ecology and habitat

A nocturnal species which inhabits thick leaf litter in low coastal forest. Robust skink also live in and around seabird burrows as well as under logs and rocks in scrublands. Robust skink are vulnerable to water loss through the skin so prefer damp areas.

Social structure

Largely unknown.

Breeding biology

Robust skink give birth to litters of up to seven young in May/June, with timing variable depending on weather/seasonal conditions (D. Keall, personal communication, October 6, 2016).

Diet

Small insects and crustaceans.

Disease

Largely unknown.

Conservation strategy

Robust skink are classified by DOC as ‘recovering’. DOC have a recovery plan in place for the species, click here to read more.

References

  • Gill, B.J., & Whitaker, A.H. (2007). New Zealand frogs and reptiles. Auckland: David Bateman Limited.
  • Hitchmough, R.A., Barr, B., Lettink, M., Monks, J., Reardon, J., Tocher, M., van Winkel, D., Rolfe, J. (2016). Conservation status of New Zealand reptiles, 2015; New Zealand threat classification series 17. Wellington: New Zealand Department of Conservation.
  • Jewell, T. (2011). A photographic guide to reptiles and amphibians of New Zealand. Auckland: New Holland Publishing.
  • Towns, D. (1992). Recovery plan for Whitaker's skink and robust skink. Retrieved October 18, 2016 from http://www.doc.govt.nz/Documents/science-and-technical/TSRP03.pdf