Taxonomy;

 

Class: Insecta 

Order: Mantodea

Family: Deroplatyidea

Sub-Family: Deroplatyinae

Tribe: Deroplatyini

Genus: Deroplatys

Species: trigonodera

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🌿 Habitat

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A rainforest built for shadows, stillness, and perfect dead‑leaf deception

 

The rainforests of Borneo and Malaysia are living green engines — ancient, humid, and layered from canopy to forest floor. Warmth rises from the ground like breath, moisture hangs in the air, and every surface is draped in life. Vines coil up towering dipterocarps, moss softens bark, and the understory glows in deep greens and warm browns.

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This is where Deroplatys trigonodera — the Malay dead‑leaf mantis — disappears into the scenery. Not on the trunks. Not in the canopy. But down in the dim, leaf‑littered understory, where curled brown leaves gather and shadows stay cool.

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🌡️ Climate: Warm, Stable, and Saturated

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The forests these mantises call home are defined by constant warmth and high humidity:

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• Daytime temperatures: 24–30°C

• Night-time dip: a gentle slide to 20–22°C

• Humidity: 70–90% with natural daily fluctuations

• Rainfall: short, frequent showers; misty mornings; long stretches of saturated air

 

The air is moist but never stagnant — even in the lower understory, there’s always a soft drift of airflow carrying heat, scent, and moisture through the forest.

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🍂 Microhabitat: The Leaf‑Litter Kingdom

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Beneath the canopy, the world is a mosaic of:

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• Deep leaf litter in ochres, browns, and brittle curls

• Low shrubs and bushes offering perches and cover

• Filtered light that flickers like shifting shadows

• Moist soil that never fully dries

• Gentle airflow preventing mould despite the humidity

 

This is the perfect stage for a mantis that looks like a crisp, folded, forgotten leaf. D. trigonodera sits motionless among the debris, swaying subtly with the forest’s breath, waiting for an unsuspecting insect to wander close enough for an ambush.

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🪵 Behavioural Fit

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The species’ entire design — colour, posture, stillness — is tuned to this environment:

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• Low light keeps the camouflage convincing

• High humidity prevents the “leaf” from becoming brittle

• Stable warmth keeps metabolism and moulting on track

• Natural airflow stops mould from creeping into the leaf litter

 

Your enclosure should echo this: warm, humid, breathable, and shaded, with plenty of leaf litter and vertical structure for perching.

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🪞 Appearance & Sexual Dimorphism

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Cream‑toned leaf mimicry with dramatic differences between the sexes

 

🎨 Colouration

 

The “trig” is instantly recognisable for its creamy to parchment‑white body tones, especially in earlier instars. As they mature, subtle gradients of beige, bone, and soft brown develop across the pronotum and wings, giving them the look of a sun‑bleached, curled forest leaf.

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• Nymphs: pale cream → soft beige

• Subadults: mottled parchment with faint leaf‑vein texturing

• Adults: deeper contrast on the pronotum, still maintaining the “dry leaf” illusion

♀️ Females: Broad, Armoured, and Leaf‑Perfect

Female D. trigonodera are the larger, wider, and more imposing sex — a classic dead‑leaf silhouette.

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• Pronotum: noticeably wider and more sculpted from the 4th instar onward, forming the iconic jagged “leaf shield”

• Body shape: broad, heavy‑set, with a rounded abdomen

• Wings: shorter, not built for sustained flight

• Overall impression: a thick, curled, brittle leaf lying in the understory

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Their size and shape make them the more convincing mimics — and the more visually dramatic.

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♂️ Males: Slim, Agile, and Built for Flight

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Males take a different evolutionary route: sleek, narrow, and aerodynamic.

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• Body shape: slim, elongated, with a tapered abdomen

• Wings: long, fully functional, extending past the abdomen and capable of true flight

• Pronotum: narrower and less flared than females

• Overall impression: a lighter, thinner leaf fragment, designed for mobility rather than intimidation

 

Their build makes them more agile, more exploratory, and more prone to short flights in captivity.

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🍂 Why the Difference?

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This species’ sexual dimorphism mirrors its ecological strategy:

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• Females rely on stillness + heavy camouflage, anchoring themselves in the leaf litter as ambush predators.

• Males rely on mobility + flight, especially during adulthood when locating females becomes their primary mission.

 

Both forms are perfectly tuned to the rainforest understory — just in different ways.

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🍽️ Feeding Behaviour

An ambush predator with a surprisingly broad menu

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🌳 In the Wild — Opportunistic Ambush Hunter

 

In their native Malaysian and Bornean rainforests, D. trigonodera are true opportunists. They don’t chase; they wait, perfectly disguised among curled leaves until something edible wanders into striking distance.

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• 🪰 Flies — from tiny midges to chunky forest blowflies

• 🦋 Moths — soft‑bodied and easy to subdue

• 🦗 Locusts & grasshoppers — taken when size allows

• 🐛 Beetle grubs — nutrient‑dense and slow-moving

• 🦗 Crickets & katydids — grabbed if they come close enough

• 🐸 Small frogs — rare but possible for large females

• 🦎 Tiny reptiles — only if they can be held securely

 

If it fits in the raptorial arms and stops wriggling, it’s food. Their strategy is simple: stay still, strike fast, waste nothing.

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🏡 In Captivity — Strong Preference for Flying Prey

 

While still opportunistic, captive trigs show clear preferences shaped by movement and ease of capture.

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🪰 Preferred Prey (High Response)

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• Flying insects — bluebottles, green bottles, houseflies, fruit flies

• Moths — especially at subadult and adult stages

• Hoverflies & lacewings — excellent for stimulating feeding response

 

Flying prey triggers their natural ambush instincts, producing fast, accurate, confident strikes.

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🍗 Accepted Prey (Reliable but Less Exciting)

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• Beetle grubs — waxworms, mealworms (in moderation), buffalo worms

• Maggots — great for juveniles

• Small roaches — red runners, banana roaches, dubia nymphs

 

They’ll take these readily, especially when hungry, but the feeding response is calmer and more deliberate.

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🚫 Notes & Cautions

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• Crickets are technically accepted but not recommended due to injury risk and possible disease and parasite carriers.

• Avoid oversized prey — trigs are strong but not reckless.

• Overfeeding leads to sluggishness and difficult moults.

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🍽️ Feeding by Abdomen Check — Not by Human Time

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Mantises don’t own clocks. They own abdomens.

 

Praying mantises never follow a human feeding schedule. Their metabolism is driven by temperature, humidity, age, sex, and moulting cycles, which means their hunger naturally rises and falls. The only reliable way to know when to feed is to look at the abdomen, not the calendar.

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👀 The Abdomen Test — Your Only Accurate Gauge

 

Mantises communicate their hunger visually. Their abdomen tells the whole story:

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• 🍂 Slim / Flat Abdomen → Time for food A narrow, flattened abdomen means the mantis has burned through its last meal and is ready to eat again. This is your cue to offer prey.

• 🛑 Plump Abdomen → No feeding required When the abdomen is rounded and full, the mantis is satisfied. If you can see the pale membrane between the abdominal segments, it’s a clear sign to stop feeding.

 

⚠️ Why This Matters

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• Overfeeding can cause abdominal ruptures, especially in species with delicate exoskeletons.

• Underfeeding is rare if you check the abdomen regularly — mantises are efficient hunters with slow metabolisms.

• Moulting cycles require careful feeding: a mantis with a full abdomen may be preparing to moult and should not be offered prey.

 

🌡️ Metabolism Drives Hunger

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Insects don’t regulate their body temperature internally. Their metabolism is entirely shaped by their environment:

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• Warm temperatures → faster metabolism → more frequent feeding

• Cooler temperatures → slower metabolism → longer gaps between meals

• High humidity → smoother moults → stable appetite

• Low humidity → stress → reduced feeding response

 

This is why a rigid “feed every X days” schedule simply doesn’t work. Your mantis eats when its body says so — not when your calendar does.

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🧭 Keeper Rule of Thumb

 

Feed the abdomen, not the date. If it looks flat, feed. If it looks full, wait.

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🌡️ Temperature & Humidity Requirements

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Echoing the warm, saturated breath of the Malaysian and Bornean rainforests

Deroplatys trigonodera comes from one of the most stable climates on Earth — the dim, humid understory of Southeast Asian rainforests.

 

These forests don’t swing wildly between seasons; they breathe, shifting gently between warm days, cooler nights, and constant moisture. Your enclosure should mirror that rhythm.

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🔥 Daytime Temperature: Warm & Steady

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24–28°C This range reflects the rainforest floor, where heat is softened by canopy shade but never truly drops. Warmth keeps:

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• Metabolism active

• Feeding response sharp

• Moults smooth and predictable

• Camouflage colours rich and stable

 

Avoid spikes above 30°C — the species is adapted to stable warmth, not tropical heatwaves.

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🌙 Night‑Time Drop: Gentle, Natural Cooling

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20–22°C Rainforest nights don’t get cold — they simply ease off the daytime warmth. This subtle drop:

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• Reduces metabolic strain

• Supports natural circadian rhythm

• Prevents overheating in enclosed setups

• Mimics the calm, shaded understory after sunset

 

A dramatic night drop is unnecessary; a soft exhale of coolness is all they need.

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💧 Humidity: High, Breathable, and Dynamic

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70–85% with natural fluctuations The rainforest understory is humid, but never swampy. Airflow is constant, moisture is everywhere, and the leaf litter stays damp without becoming stagnant.

 

Your goal is high humidity + good ventilation, not a sealed terrarium.

 

✔️ Benefits of proper humidity

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• Reliable moults with minimal risk of limb deformities

• Healthy, flexible exoskeleton that maintains the “dead leaf” texture

• Natural behaviour — swaying, ambushing, and perching comfortably

• Reduced stress and improved feeding response

 

✔️ How to achieve rainforest‑style humidity

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• Light daily misting (morning preferred)

• Deep, naturalistic leaf litter that holds moisture

• A breathable enclosure with cross‑ventilation

• Occasional humidity spikes after misting to mimic short rainforest showers

 

🌬️ Airflow: The Secret Ingredient

 

Even in the rainforest, the air moves. A trig enclosure should never feel “stuffy”.

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• Good ventilation prevents mould

• Gentle airflow keeps humidity healthy, not stagnant

• Naturalistic microclimates form — some drier perches, some damper leaf litter pockets

 

This balance is exactly what the species evolved for.

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🧭 Keeper Summary

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• 🌞 Day: 24–28°C

• 🌙 Night: 20–22°C

• 💧 Humidity: 70–85%

• 🌬️ Ventilation: High — always breathable

• 🍂 Substrate: Moist leaf litter, not wet soil

• 🌧️ Rhythm: Warm days, soft nights, brief humidity spikes

 

This setup recreates the quiet, dim, saturated world where Deroplatys trigonodera perfected its dead‑leaf disguise.

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🏡 Enclosure – Designing a Safe, Functional Home

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📏 Sizing: The Keeper‑Verified Standard

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A quick Google search will tell you the same generic formula for every mantis:

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• 3× the mantis’s length = enclosure height

• 2× the mantis’s length = enclosure width

 

This works only for an empty enclosure.

Once you add substrate, décor, branches, or plants, you reduce the vertical space your mantis needs to moult safely.

 

At The Mantis Garden, we recommend the corrected, keeper‑approved standard:

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• 4× the mantis’s length for height

• 2× for width

 

This ensures safe moulting clearance at every age and for every species.

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🌿 Decorating With Purpose

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These dimensions work universally, but young mantises need clean vertical space.
Before your mantis reaches adulthood, avoid:

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• Dense planting

• Heavy décor

• Cluttered branches

 

During moulting, nothing should obstruct their ability to hang freely.
Think of it as furnishing a room around someone who occasionally needs to drop from the ceiling.

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🕸️ The Mesh Lid: Absolutely Essential

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A mesh lid is non‑negotiable. Mantises must be able to:

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• Hook onto the mesh

• Hang vertically

• Complete a full, clean moult

 

Without a proper hanging point, they may attempt to moult from unsuitable surfaces, leading to:

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• Failed moults

• Missing limbs

• Internal or external injuries

• Fatal complications

 

A simple mesh top helps prevent all of this.

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🌳 Free‑Roaming Adults (Advanced Keepers Only)

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This species is large, calm, and confident — and many adults will happily free‑roam if provided with a suitable plant.

Mantises naturally move upwards, rarely descending to the floor unless:

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• Unwell

• Searching for a place to lay an ootheca

 

A tall plastic or real plant placed on an eye‑level shelf can become a stable, enriching home for an adult.

 

⚠️ Important Warning

 

Free‑roaming is not recommended unless you fully understand mantis behaviour.
And remember:

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• Cats

• Dogs

• Birds

 

…will all happily turn a mantis into a snack. They’re tough, but not indestructible.

desiccata are also large enough and have the power to do great damage to smaller birds or even kill them.

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🧬 Breeding

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Feisty timing, careful supervision, and rainforest‑calm patience

 

Breeding Deroplatys trigonodera is a very different experience compared to other dead‑leaf species. The females are notoriously reactive, especially when freshly matured, and the males rely heavily on short‑burst flight to approach safely. Success comes from timing, supervision, and controlled introductions.

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♀️ Female Readiness — Calm Comes With Age

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Female trigs are far more defensive and swat‑happy than other Deroplatys species when the timing isn’t right.

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• 3–4 weeks post‑final moult → females begin to settle, becoming calmer and more tolerant

• Attempting earlier is possible, but:

  • Younger females = more feisty

  • Higher risk of rejection or aggressive swatting

• A well‑fed female is essential — never pair a hungry female

 

Their temperament softens with maturity, making this waiting period critical.

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♂️ Male Readiness — Awareness Takes Time

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Males mature faster but benefit from patience:

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• 10–14 days after final moult is the minimum

• 14–18 days is ideal for full sexual awareness and confidence

• Well‑fed males are less likely to panic‑fly or misjudge distance

 

Males rely on flight to initiate pairing, so confidence matters.

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🏕️ The Pairing Setup — Safety First

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A mesh pop‑up enclosure is the gold standard for this species:

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• 🪟 High ventilation prevents stress

• 🕸️ Mesh walls allow males to grip and fly safely

• 🛡️ Soft surfaces reduce injury risk during panic flights

 

Never leave the pair unsupervised. A non‑receptive female can injure or kill a male within seconds.

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🕊️ The Approach — Controlled Chaos

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Male trigs typically launch themselves from a short distance, landing abruptly on the female. This often causes:

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• Startle reactions

• Wing flaring

• Swatting attempts

 

Keep the enclosure within arm’s reach so you can intervene instantly if the female decides he’s a snack rather than a suitor.

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🔗 The Mounting Process — Awkward but Effective

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Once contact is made:

• The male grips the short wing nub at the end of the female’s wings

• The female may walk, drag, or ignore him while he hangs on

• He often climbs on facing the wrong direction at first

• Once confident she won’t swat him, he turns, aligns, and connects

⏳ Connection Duration

• Average: 6 hours

• Possible: 12+ hours

• The male will eventually attempt to fly off — this is the most vulnerable moment

• Stay close to ensure he leaves intact and uneaten

 

🥚 Ootheca Timeline

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After a successful pairing:

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• 3–30 days → female lays her ootheca

• Placement:

  • Top of the enclosure

  • Underside of décor or bark

• 4–6 weeks to hatch under correct temperature and humidity

• Maintain stable rainforest‑style conditions for best viability

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​​​​Ootheca Care & Hatching

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Within the hobby, their oothecae (“ooths”) are best incubated at:

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• Humidity: 70–80%

• Temperature: 25–30 °C

• Incubation time: 4-6 weeks

• Expected hatch: 50-100 nymphs (average)

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Setting Up the Incubation Container

 

Ooths can be gently removed after laying and placed into 32 oz pots. Attach the ootheca to the mesh lid using a tiny dab of superglue or a small piece of Blu Tack—just enough to hold it securely using the thread provided.

 

Line the bottom of the pot with 1–2 cm (½″) of damp coco fibre or sphagnum moss. Maintain warmth and light moisture to keep the internal environment stable at 25–30 °C. Under these conditions, the ooth should hatch within 3–6 weeks of being laid.

 

Hatch Day Care

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A newly hatched ootheca typically releases around 25–40 nymphs, all of which emerge extremely thirsty. Provide water by lightly misting the mesh lid only, allowing tiny droplets to form where the nymphs can safely drink.

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Do not spray directly into the pot. Large droplets on the walls or substrate can trap or drown first‑instar nymphs

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Early Nymph Behaviour & First Feeding

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Contrary to popular belief (and what Google often claims), newly emerged nymphs are not ready to hunt immediately. They hatch soft, pale, and highly vulnerable, avoiding confrontation until their bodies harden. This process usually takes 2–3 days, and only after this period do they require external food.

 

There is no rush to separate this species at hatch. When provided with light misting and appropriate food, they can remain together in the incubation pot for several days without issue and a larger container for several weeks.

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Feeding the First Instars

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• D. hydei (fruit flies) are the ideal first food.

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​​Potting Up Nymphs

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To house individual nymphs, 4‑oz (120 ml) deli pots work perfectly. Fit each pot with a mesh‑topped lid by cutting out the centre and clamping a piece of mesh between the lid and the rim to ensure good airflow.

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A make‑up pad placed at the bottom of the pot helps absorb excess moisture from misting and provides a stable source of humidity. This simple setup keeps conditions safe and consistent for early growth.