Exatosoma popa is a large, heavily armoured Australian stick insect known for its dense spination and robust, thorn‑covered body. Females are thick‑set and imposing, with sharply defined spines along the thorax and abdomen that give them a distinctly “armoured branch” appearance. Males are slimmer and winged, but still noticeably more spined than their close relatives, giving them a rugged, bark‑mimicking profile. Their colours range from earthy browns to muted greens, allowing them to blend seamlessly into eucalyptus and woodland vegetation.
 
In the wild, E. popa inhabits warm, humid forest regions where its thorny camouflage provides excellent protection from predators. Eggs are large, seed‑like, and textured, blending naturally into the leaf litter. Nymphs hatch dark and cryptic, gradually developing the characteristic spines as they mature. Although visually dramatic, the species is calm, hardy, and rewarding in captivity, thriving with stable warmth, moderate humidity, and plenty of climbing structure.
 
Compared to its more famous cousin, the Macleay’s Spectre (Extatosoma tiaratum), E. popa is less leaf‑lobed and more heavily spined, giving it a very different aesthetic despite their shared Australian heritage. This makes popa an excellent species for keepers who enjoy the “thorny branch” look rather than the leafy, sculptural form of tiaratum.
 
Feature
Exatosoma popa
Extatosoma tiaratum
(Macleay’s Spectre)
Overall look
Thorny, spined,
branch‑mimicking
Leaf‑lobed, sculptural,
leaf‑mimicking
Body shape 
(females)
Chunky, angular,
heavily armoured
Broad, lobed, rounded, “leafy”
Spination
Dense, sharp spines across
body & legs
Moderate spines + large leaf‑like
lobes
Colouration
Brown to green‑brown,
bark‑like
Green, brown, mottled leaf
patterns
Male appearance
More spined, slightly heavier,
weaker fliers
Very slender, delicate, strong fliers
Egg shape
Elongated,
rough‑textured
Rounder with capitulum
(ant‑dispersed)
Nymph behaviour
Hatch dark and
cryptic
Famous ant‑mimicking
hatchlings
Hardiness
Hardy but more
humidity‑dependent
Extremely hardy and forgiving
Camouflage 
strategy
Thorny branch mimic
Leaf mimic
Overall impression
Armoured, thorny,
imposing
Leafy, ornate, iconic