The jungle nymph is one of the heaviest stick insects, with a vivid green, spiny, wingless female and a longer lifespan than most phasmids. The smaller brown males have wings and can briefly glide. Its size and humidity needs make it an intermediate-level keeper's favorite.
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Females very large, bright green and wingless, 15-16 cm (6+ in) and heavy; brown winged males ~10 cm.
Lifespan
1–2 years
Social needs
group
Native region
Peninsular Malaysia and Southeast Asia
Origin
Old World
Climate
🌴 Tropical
Family
Heteropterygidae
Genus
Heteropteryx
Part of the Stick & Leaf Insects
Phasmids (order Phasmatodea) kept as gentle, low-cost display insects prized for their twig- and leaf-mimicking camouflage. Most are herbivorous, non-venomous, and harmless to handle, feeding on bramble and other foliage, though many non-native species are regulated (a USDA PPQ 526 permit is required for many in the US) and must never be released outdoors.
From the minimum an animal needs to be kept humanely, up to the ideal setup. Bigger is almost always better — minimums are floors, not targets.
Photo coming soon
Minimum
Very tall mesh enclosure
18 × 18 × 24 in (≥ 3× body length tall)
Heteropteryx dilatata females reach 15–17 cm and are heavy — they need a tall, sturdy mesh enclosure with strong perches. House solitary or in low-density groups. Substrate ≥ 8 cm deep for egg-laying.
Photo coming soon
Recommended
Tall planted terrarium
24 × 18 × 36 in, deep substrate, mesh
A planted terrarium at least 60 cm tall with bramble/oak/raspberry, deep coco-fibre substrate (10–15 cm) for the long incubation eggs, daily misting, and warmth (~25 °C). Defensive — males have spined legs.
Photo coming soon
Ideal
Walk-in insectarium
24 × 24 × 48 in+ , planted, bioactive
A walk-in mesh insectarium with live host plants, deep substrate, varied climbing, and bioactive cleanup. Generous height/footprint suits this giant of the stick-insect world.
Life & growth stages
How this animal changes through its life — each stage often has its own care, diet and space needs.
Photo coming soon
Egg
Insects begin as eggs, laid singly or in clusters on or near a food source. Egg size, shape, and incubation time vary widely; some are glued to surfaces, others inserted into plant tissue or soil.
Photo coming soon
Larva / Nymph
The immature stage either looks grub- or caterpillar-like and very different from the adult (a larva, in beetles, flies, and butterflies) or like a wingless miniature adult (a nymph, in roaches, mantises, and stick insects). It eats and molts repeatedly as it grows.
Photo coming soon
Pupa
In insects with complete metamorphosis, the larva pupates — often in a cocoon, chrysalis, or sealed cell — and its body is reorganized into the adult form. Nymph-developing insects skip a true pupa and molt straight to the adult.
Adult
The adult is the sexually mature, usually winged stage with the species' full coloration and form. Adults are typically the dispersing and reproducing stage, and in many insects do not grow further once mature.
Habitat & enclosure
House one or a small group in a tall, humid terrarium at least 45-60 cm high for the bulky females to molt safely. Keep warm (24-28 C) and humid (70-80%) with good ventilation. Provide stout branches — females are too heavy for flimsy perches — and standing foodplant.
Substrate
A deep layer (5-8 cm) of moist coco fiber lets females bury their eggs and helps hold humidity; keep it damp, not waterlogged.
Equipment & setup
Tall humid terrarium, sturdy branches, deep substrate, spray bottle, hygrometer, and a low heat source to hold tropical temperatures.
Diet
A herbivore eating bramble, oak, guava, rose, and salmonberry foliage. Provide fresh leaves in a covered water jar and mist heavily for humidity and drinking. Heavy-feeding females need a steady supply of fresh foodplant.
Behavior & temperament
Females are large, green and flightless; the smaller brown males are winged and can glide short distances. Spiny females defend themselves by snapping the hind legs together to pinch and can stridulate (hiss) by flaring the small wings. Lives longer than typical phasmids, so adults persist for many months. Lays large eggs buried in substrate.
Health
Sensitive to low humidity, which causes molt failure in the large females; keep humidity high but with airflow to avoid mold. The pinching hind-leg defense can draw blood, so handle with care. Provide deep substrate for egg-laying females. Note any required USDA permit / state rules for keeping exotic phasmids in the US.
Tips, DIY & hacks
Sift the substrate periodically to harvest the large eggs for incubation on damp vermiculite — hatching can take many months, so be patient. Respect the powerful hind-leg pinch when handling the females.
