- Size
- Length: 80–120 mm
- Lifespan
- 10–14 months
- Diet
- Leaves of rātā, pōhutukawa and other native trees.
- Habitat
- Native forest canopy and understory with dense foliage particularly in northern regions.
- Range
- Northern North Island to Wellington in native forests.
- Endemism
- Endemic
- Main Threats
- Habitat loss and predation by introduced mammals and birds.
- Population
- Locally common in suitable forest habitats though often overlooked due to cryptic behaviour.
- Conservation Status
- Not Threatened
- Human Risk
- harmless
- Handling Note
- cryptic and slow-moving, best observed without disturbance
- Conservation Note
- Endemic stick insect with widespread distribution across both main islands in scrub and forest margins, facing minimal conservation concern despite localised habitat pressures.
- Assessment
- NZTCS Invertebrates (2021)
- Te Ao Māori
- While lacking specific Māori nomenclature the Bristly Stick Insect inhabits forests rich in traditional resource values. Its presence indicates healthy canopy ecosystems. Early naturalists noted its unusual appearance. The bristles sparked curiosity. Scientific description followed later.
Predators hunt it relentlessly. Birds scan branches for movement. Spiders wait in webs. The Bristly Stick Insect survives by being uninteresting. Its body is covered in bristles. These do not sting. They deter handling. Birds find it awkward to swallow. Spiders struggle to wrap it. The defence is passive. It works.
Diet includes leaves from a range of native trees. Rātā and pōhutukawa are favoured. The insect feeds at night. During the day it remains motionless. Mimicry extends to texture. The bristles break up the outline. Light filters through the canopy. The insect disappears.
Range covers the northern half of the North Island. It extends south to Wellington in suitable habitats. Forest fragmentation limits dispersal. Continuous canopy is preferred. Gaps expose the insect to predation. Urban gardens occasionally support populations if native plants are present.
Habitat requirements include mature native forest. Young regrowth lacks sufficient cover. The insect needs height. Canopy layers provide protection. Humidity levels must be moderate. Dry conditions cause desiccation. Rainforest edges are ideal. Here food and shelter coexist.
Threats include habitat loss. Logging removes mature trees. Introduced predators like rats climb efficiently. Birds adapt to hunting strategies. Pesticides in nearby agricultural areas drift into forest margins. Despite these pressures the species persists. It is resilient within its niche.
Life span is around one year. Eggs are laid in soil. Incubation takes months. Nymphs hatch in spring. They climb immediately to find food. Growth is steady. Moulting occurs regularly. Adults emerge in summer. Mating is brief. Females lay eggs before winter. The cycle continues.