- Size
- Length: 40–60 mm
- Lifespan
- 12–18 months
- Diet
- Leaves of native coastal plants endemic to the Three Kings.
- Habitat
- Coastal scrub and rocky outcrops on the Three Kings Islands group.
- Range
- Three Kings Islands only.
- Endemism
- Endemic
- Main Threats
- Invasive plants and climate change. Restricted range increases extinction risk.
- Population
- Restricted to a small island group. Population size is small and vulnerable to stochastic events.
- Conservation Status
- Nationally Vulnerable
- Human Risk
- harmless
- Handling Note
- restricted to protected island ecosystem, avoid contact to prevent biosecurity risks
- Conservation Note
- Endemic stick insect restricted to the Three Kings Islands, vulnerable to stochastic events and habitat changes despite current predator-free status.
- Assessment
- NZTCS Invertebrates (2021)
- Te Ao Māori
- The Three Kings Islands hold spiritual significance for local iwi. While this specific insect lacks recorded traditional names it forms part of the unique biodiversity protected by customary guardianship. Its rarity mirrors the fragility of the island ecosystem itself.
In 1990 the species was formally described. Before that it was unknown to science. The Three Kings Stick Insect lives on a remote archipelago north of Cape Reinga. Isolation protected it. Now isolation threatens it. The range is tiny. One storm could wipe it out.
Threats are severe. Introduced pests like rats are absent but invasive plants alter habitat structure. Climate change impacts coastal vegetation. Sea level rise reduces available land. Human visitation is restricted but accidental introduction of predators remains a risk. Biosecurity is critical.
Diet consists of native coastal plants. Specific host species include those endemic to the Three Kings. The insect has evolved to utilise these unique plants. Feeding occurs at night. Daytime is spent hidden in crevices or under bark. Camouflage is effective against seabirds.
Range is limited to the Three Kings Islands. No other populations exist. This endemism makes it globally significant. Conservation efforts focus on maintaining predator-free status. Monitoring is difficult due to remote location. Surveys are infrequent.
Habitat includes coastal scrub and rocky areas. Vegetation is sparse compared to mainland forests. The insect adapts to exposed conditions. Wind resistance is necessary. Body shape minimises drag. Legs grip tightly to prevent dislodgement. Survival depends on holding on.