Leiopelma archeyi Turbott, 1942
© 2006 Dr. Paddy Ryan (1 of 6)
Distribution and Habitat
Country distribution from AmphibiaWeb's database: New Zealand
Terrestrial; can be found in moist forests, grassy clearings, ridges, and sub-alpine scrub around 200-1000 m altitude. Nocturnal; likes to take shelter under stone and logs by day (Gill and Whitaker 1996).
Life History, Abundance, Activity, and Special Behaviors
Defense: Can remain motionless for long periods of time. Assumes stiff-legged stance, rearing up and extending the legs (Green 1988).
Reproduction: Amplexus takes place in shallow depressions beneath logs, where it’s cool and moist. Egg clusters are later laid in strings. Diameters of egg capsules range from 8 to 11 mm. Eggs are yolky, unpigmented, and enclosed in clear capsules comprised of an outer, tougher, and initially somewhat adhesive coat, a middle gelatinous layer, and an inner vitelline membrane. Sometimes frogs, particularly males, occupy the oviposition sites for weeks or longer prior to the laying of eggs. Takes froglets at least 3 to 4 years to reach maturity. In their development, they have narrow tail fins, and only the base of the forelimbs is covered by the gular fold (Bell 1978).
Trends and Threats
Archey’s frog (Leiopelma archeyi) is considered one of the most endangered and evolutionarily distinct frogs in the world. This small frog occurs in the moist, subalpine scrub of New Zealand’s North Island in the Coromandel Peninsula and the Whareorino Forest, and is known for its direct developing young (having no tadpole stage). In March 2018, New Zealand’s Department of Conservation will proactively combat one of the threats to the frogs by setting out over a thousand self-resetting rat traps in Whareorino Forest. The deployment of automatically resetting rat traps apparently has the benefit of reducing the need for human intervention which allows long unsupervised implementation as well as reducing the exposure of the tiny frogs to human-transmitted diseases in these remote areas. The NZ Department of Conservation has shown that reducing introduced predators such as rats has allowed frog populations to stabilize and do well in translocated areas like Pureora, south of the Coromandel Peninsula (Written by Michelle Koo).
Bell, B.D. (1978). ''Observations on the ecology and reproduction of the New Zealand native frogs.'' Herpetologica, 34, 340-354.
Gill, B., and Whitaker, T. (1996). New Zealand Frogs and Reptiles. David Bateman Limited, New Zealand.
Green, D. M. (1988). ''Antipredator behavior and skin glands in the New Zealand native frogs, genus Leiopelma.'' New Zealand Journal of Zoology, 15, 39-46.
Originally submitted by: Chih Wang (first posted 2003-04-22)
Edited by: Updated by Ann T. Chang, Michelle Koo (2018-11-14)
Species Account Citation: AmphibiaWeb 2018 Leiopelma archeyi: Archey's Frog <https://amphibiaweb.org/species/2064> University of California, Berkeley, CA, USA. Accessed Sep 25, 2023.
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Citation: AmphibiaWeb. 2023. <https://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 25 Sep 2023.
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