Domino Cockroach (Therea petiveriana) Care Sheet
The Domino Cockroach (Therea petiveriana) is a striking terrestrial cockroach from India, immediately recognisable as an adult by its glossy black body and contrasting white spots.
Unlike familiar household pest cockroaches, Domino Cockroaches are specialised forest-floor invertebrates. Much of their life is spent concealed within substrate and leaf litter, particularly during the nymphal stages.
Adults develop their characteristic black-and-white pattern and spend considerably more time above the substrate. Their unusual appearance has made Therea petiveriana one of the most popular ornamental cockroaches maintained by invertebrate enthusiasts.
They are generally peaceful, relatively straightforward to feed and suitable for colony housing. However, their development can be slow, and successful breeding requires patience, appropriate substrate and stable environmental conditions.
Successful husbandry requires a secure enclosure, deep moisture-retentive substrate, abundant leaf litter, moderate warmth, good ventilation, suitable food and undisturbed areas for burrowing nymphs and developing oothecae.
Quick Facts
Scientific name: Therea petiveriana
Common name: Domino Cockroach
Order: Blattodea
Family: Corydiidae
Origin: India
Adult size: Approximately 2.5–3.5 cm
Diet: Omnivorous detritivore
Lifestyle: Terrestrial and burrowing
Activity: Primarily crepuscular/nocturnal
Housing: Groups or colonies
Temperature: Approximately 22–28°C
Humidity: Moderate with a moisture gradient
Substrate: Deep organic substrate with abundant leaf litter
Handling: Limited/gentle
Flight: Adults possess wings; flight ability is limited compared with many cockroaches
Experience level: Beginner to intermediate
Major requirements: Deep substrate, leaf litter, moderate moisture, ventilation and patience
Natural Distribution
Therea petiveriana originates from:
India.
The species is associated with terrestrial habitats where cockroaches can shelter beneath:
- Leaf litter
- Decaying vegetation
- Loose soil
- Bark
- Fallen wood
- Other organic debris
These habitats provide both food and protection.
Appearance
Adult Domino Cockroaches are dramatically different in appearance from their nymphs.
Adults possess:
- Broad rounded bodies
- Dark black colouration
- Contrasting pale spots
- Developed wings
- Relatively short compact appearance
The pattern gives the species its common name.
White Spots
The distinctive pale markings resemble the spots found on:
domino tiles.
The contrast between the markings and dark background makes adults particularly attractive display insects.
Adult Size
Adults generally reach approximately:
2.5–3.5 cm.
Individual size varies according to:
- Sex
- Genetics
- Nutrition
- Developmental conditions
Nymph Appearance
Nymphs look completely different from adults.
They are generally:
- Brown
- Mottled
- Flattened
- Cryptically patterned
Their appearance helps them disappear amongst:
- Soil
- Dead leaves
- Decaying wood
Nymph Behaviour
Nymphs spend much of their time:
buried beneath the substrate.
A colony containing many healthy nymphs may therefore appear almost empty during daylight.
This is normal.
Adult Behaviour
Adults are more visible than nymphs.
They may be observed:
- Walking across leaf litter
- Feeding
- Exploring
- Resting beneath bark
- Interacting with other adults
Activity commonly increases during the evening.
Defensive Behaviour
When disturbed, Domino Cockroaches generally attempt to:
- Run
- Hide
- Burrow
- Remain concealed
They are not regarded as aggressive animals.
Housing
A secure plastic, acrylic or glass enclosure works well.
The enclosure should provide:
- Adequate floor area
- Deep substrate
- Good ventilation
- Leaf litter
- Hiding places
- Secure lid
Enclosure Size
For a starter colony, an enclosure around:
30 × 20 × 20 cm or larger
provides a useful starting point.
Larger colonies require additional space.
Floor Space
Floor area is more important than extreme enclosure height.
Domino Cockroaches are predominantly:
terrestrial and burrowing.
Secure Lid
Use a securely fitted lid.
Even species that are not notorious escape artists should always be maintained in:
escape-proof housing.
Ventilation
Good ventilation is essential.
Suitable ventilation helps prevent:
- Stagnant air
- Excessive condensation
- Mould
- Substrate souring
Humidity should never be maintained by completely sealing the enclosure.
Ventilation Openings
If breeding, ensure ventilation openings cannot allow tiny hatchlings to escape.
Fine insect mesh can be fitted over larger openings.
Substrate
Substrate is one of the most important parts of the enclosure.
A suitable mixture can include:
- Organic topsoil
- Coco fibre
- Decayed leaf material
- Rotten hardwood
- Other safe invertebrate substrate components
Substrate Depth
Provide approximately:
5–10 cm or more
of substrate.
A deeper layer is particularly beneficial because nymphs spend substantial amounts of time underground.
Leaf Litter
Provide a generous layer of:
deciduous leaf litter.
Suitable examples include pesticide-free:
- Oak
- Beech
- Other safe hardwood leaves
Leaf litter provides:
- Food
- Cover
- Humidity retention
- Natural foraging material
Leaf Litter as Food
Leaf litter is not merely decoration.
As it decomposes, it becomes part of the colony’s diet.
Maintain a layer of suitable leaves and replenish it as necessary.
Rotten Hardwood
Soft decomposed hardwood can also be included.
Suitable wood should be:
- Naturally decayed
- Soft
- Free from pesticides
- Free from paint or preservatives
Wood to Avoid
Never use:
- Treated timber
- Painted wood
- Varnished wood
- Pressure-treated wood
- Chemically preserved wood
Avoid collecting material from contaminated areas.
Hides
Suitable hides include:
- Cork bark
- Pieces of hardwood bark
- Leaf litter
- Small pieces of rotten wood
Much of the colony may choose to remain underground regardless of the hides provided.
Naturalistic Housing
Domino Cockroaches are particularly well suited to naturalistic enclosures.
A display can contain:
- Deep soil
- Leaf litter
- Cork bark
- Decayed wood
- Suitable live plants
Ensure plants have not been treated with insecticides.
Temperature
A useful temperature range is approximately:
22–28°C.
Around:
24–26°C
works well for many colonies.
Cooler Conditions
They can tolerate somewhat cooler conditions, but prolonged low temperatures may result in:
- Reduced activity
- Slower growth
- Slower reproduction
Excessive Heat
Avoid prolonged excessive heat.
Temperatures above approximately:
30°C
should generally be avoided.
Heating
If additional heat is necessary, suitable options include:
- Heating the room
- Gentle external heating
- Thermostatically controlled equipment
Heat Mat Position
If a heat mat is used, placing it against:
the side of the enclosure
is generally preferable to heating the entire floor.
Because the animals burrow, they should be able to move deeper without encountering increasing heat.
Thermostat
Dedicated heating equipment should ideally be controlled by:
a reliable thermostat.
Temperature Gradient
Where practical, provide:
- A warmer area
- A cooler area
This allows behavioural thermoregulation.
Direct Sunlight
Never place the enclosure in direct sunlight.
Transparent enclosures can overheat rapidly.
Humidity
Domino Cockroaches appreciate:
moderate humidity.
Approximately:
60–75% relative humidity
provides a useful general guide.
Substrate condition is more useful than attempting to maintain an exact number.
Moisture Gradient
Rather than keeping everything equally damp, provide a:
moisture gradient.
One portion of the substrate can remain slightly moist while another remains somewhat drier.
Substrate Moisture
The substrate should generally feel:
slightly moist, not saturated.
Avoid:
- Standing water
- Mud
- Constantly soaked substrate
- Foul-smelling anaerobic conditions
Misting
Light misting can be used to maintain moisture.
Allow some surface areas to dry somewhat between mistings.
Ventilation and Humidity
Humidity and ventilation are not opposites.
The goal is:
moist substrate with fresh air, rather than a sealed wet container.
Drinking Water
Much of the colony’s hydration can come from:
- Moist foods
- Substrate moisture
- Environmental humidity
Deep water dishes are unnecessary.
Diet
Domino Cockroaches are:
omnivorous detritivores.
Their diet should include decomposing plant material alongside supplementary foods.
Natural Dietary Foundation
Important dietary materials include:
- Decaying leaves
- Decayed wood
- Other decomposing plant matter
These should remain available within the enclosure.
Vegetables
Suitable supplementary vegetables include:
- Carrot
- Sweet potato
- Squash
- Courgette
- Pumpkin
- Leafy greens
Fruit
Fruit can be offered in moderation.
Suitable examples include:
- Apple
- Pear
- Banana
- Melon
Fruit should not replace the natural detritus component of the diet.
Dry Food
A suitable dry supplementary food can be provided.
Options may include:
- Quality invertebrate diets
- Suitable grain-based foods
- Small amounts of appropriate fish food
Protein
Occasional dietary protein can be beneficial.
Suitable formulated foods can provide this without requiring animal prey.
Avoid excessive protein-rich food, which can encourage:
- Mites
- Mould
- Spoilage
Feeding Frequency
Supplementary food can generally be offered:
two or three times per week
and adjusted according to colony size.
Leaf litter and decomposed material should remain continuously available.
Food Dish
Using a shallow food dish can make cleaning easier.
It prevents fresh food from becoming buried immediately.
Remove Spoiled Food
Remove fresh foods when they become:
- Mouldy
- Heavily fermented
- Slimy
- Heavily contaminated
Pesticides on Produce
Wash fresh produce before feeding.
Do not use fruit or vegetables known to have been contaminated with insecticides.
Foods to Avoid
Avoid:
- Mouldy foods
- Heavily salted foods
- Highly processed human foods
- Chemically contaminated produce
Calcium
Domino Cockroaches do not require reptile-style calcium supplementation.
A varied diet and appropriate decomposing organic material are more important.
Activity
The species is primarily:
crepuscular and nocturnal.
Activity may increase:
- In the evening
- At night
- After misting
- When food is introduced
Daytime Hiding
Do not be concerned if few cockroaches are visible during daylight.
Nymphs in particular may spend almost all their time underground.
Lighting
Specialised lighting is unnecessary.
Provide a normal:
day/night cycle.
UVB
Dedicated UVB lighting is not required.
Handling
Handling should be:
gentle and occasional.
Adults can be allowed to walk onto the hand.
Handling Nymphs
Avoid repeatedly digging up nymphs simply for handling.
Their natural behaviour is to remain concealed within the substrate.
Picking Up Adults
Encourage an adult to walk onto:
- Your hand
- A piece of bark
- A small container
Avoid squeezing the body.
Falling
Handle close to a table or other safe surface.
Although adults are robust, unnecessary falls should be avoided.
Biting
Domino Cockroaches are not generally aggressive toward people.
Biting is not a normal defensive response.
Hand Hygiene
Wash hands after:
- Handling cockroaches
- Touching substrate
- Cleaning the enclosure
Colony Housing
Domino Cockroaches are suitable for:
group housing.
A colony can contain:
- Adult males
- Adult females
- Nymphs
Aggression
Serious aggression is uncommon when adequate:
- Space
- Food
- Hides
- Substrate
are provided.
Colony Density
Avoid severe overcrowding.
Excessive density can cause:
- Increased waste
- Competition
- Poor hygiene
- Difficulty monitoring the colony
Expand or divide a large colony when necessary.
Sexual Dimorphism
Sexing adults is possible, although differences are less dramatic than in species such as Madagascan Hissing Cockroaches.
Experienced keepers may use:
- Body proportions
- Abdominal characteristics
for identification.
When accurate sexing is important, examine mature adults carefully rather than relying on colour pattern alone.
GROWTH AND MOULTING
Domino Cockroaches undergo:
incomplete metamorphosis.
The life cycle consists of:
Egg → Nymph → Adult
There is no pupal stage.
Nymph Growth
Nymphs increase in size through repeated:
moults.
After each moult, the new exoskeleton must harden.
Freshly Moulted Nymphs
A freshly moulted cockroach may appear:
- White
- Cream
- Very pale
- Soft
This is completely normal.
Darkening
The exoskeleton gradually:
- Hardens
- Darkens
- Develops normal colouration
Leave freshly moulted animals undisturbed.
Exuviae
The shed exoskeleton is called the:
exuvia.
Cockroaches may consume shed exoskeletons.
This is normal behaviour.
Development Rate
Domino Cockroaches are not among the fastest-developing cockroach species.
Nymphal development may take:
many months.
Temperature, food and individual genetics influence development speed.
Patience
A newly established colony may appear to make little progress for some time.
This is normal.
Much of the population may be developing invisibly beneath the substrate.
BREEDING
Domino Cockroaches can be bred successfully in captivity, but reproduction is considerably slower than that of many feeder cockroach species.
Breeding Conditions
Successful breeding requires:
- Mature males and females
- Suitable warmth
- Adequate moisture
- Deep substrate
- Leaf litter
- Good nutrition
- Minimal unnecessary disturbance
Oothecae
Females produce egg cases called:
oothecae.
Unlike Madagascan Hissing Cockroaches, Domino Cockroaches deposit their oothecae rather than retaining them internally until live young emerge.
Ootheca Deposition
Females generally place oothecae within:
- Substrate
- Leaf litter
- Sheltered areas
This is another reason to avoid unnecessary complete substrate replacement in breeding colonies.
Ootheca Appearance
Oothecae are relatively small and can be difficult to locate within natural substrate.
There is usually no need to search for them constantly.
Incubation
Oothecae can generally be left:
within the established colony substrate.
Stable temperature and moisture allow them to develop naturally.
Ootheca Moisture
Do not allow breeding substrate to become:
- Completely desiccated
- Waterlogged
A stable slightly moist environment is preferable.
Hatching
Tiny nymphs eventually emerge from successful oothecae.
Because they are small and immediately secretive, they may remain unnoticed for some time.
Hatchling Escape Prevention
Check ventilation and lid gaps carefully.
Openings that securely contain adults may not necessarily contain newly hatched nymphs.
Hatchling Food
Young nymphs can consume:
- Decomposing leaves
- Fine organic substrate
- Small pieces of supplementary foods
They do not require a completely separate diet.
Nymph Rearing
Young nymphs can remain within the colony if:
- Space is adequate
- Food is plentiful
- Moisture is appropriate
Separate rearing is generally unnecessary unless the keeper is maintaining detailed breeding records.
Breeding Speed
Domino Cockroaches reproduce relatively slowly.
Do not expect explosive population growth comparable with many feeder cockroach species.
This can actually make them easier to manage as ornamental colonies.
Population Planning
Despite their relatively slow reproduction, successful colonies can eventually become large.
Plan for:
- Additional enclosure space
- Food
- Substrate
- Responsible distribution of surplus animals
Preventing Breeding
If breeding is not wanted, maintain:
single-sex groups
where accurate sexing is possible.
Lifespan
The overall life cycle is relatively long for a small cockroach.
Nymphal development can take many months, while adults may live for:
several additional months.
Exact lifespan varies with environmental conditions.
Cleaning
Naturalistic colonies benefit from:
spot cleaning rather than constant complete substrate replacement.
Remove:
- Spoiled food
- Excess waste
- Mouldy material
while leaving much of the established substrate intact.
Why Complete Substrate Changes Can Be a Problem
Breeding substrate may contain:
- Tiny nymphs
- Oothecae
- Buried juveniles
Discarding substrate without careful inspection can accidentally remove much of the colony.
Deep Cleaning
A complete substrate replacement should generally be reserved for situations such as:
- Serious contamination
- Severe pest problems
- Foul substrate
- Other major husbandry issues
Springtails
Springtails can be useful inhabitants of naturalistic enclosures.
They help consume:
- Mould
- Decaying food
- Organic waste
They are generally harmless to healthy cockroaches.
Isopods
Some keepers combine cockroaches with cleanup invertebrates.
However, adding other larger detritivores can create:
- Food competition
- Egg disturbance
- Difficulty monitoring breeding
Springtails are usually the simpler cleanup option.
Mites
Small decomposer mites may occasionally appear.
Large mite populations usually indicate:
- Excess food
- Excessive moisture
- Accumulated organic waste
Correct the husbandry conditions rather than using pesticides.
Mould
Occasional fungal growth may occur in organic substrate.
Persistent heavy mould usually indicates:
- Excess moisture
- Poor ventilation
- Too much uneaten food
Fungus Gnats
Moist organic substrate can attract fungus gnats.
Control measures include:
- Avoiding excessive moisture
- Removing spoiled food
- Maintaining ventilation
- Using appropriate cleanup organisms
Never use insecticide around the cockroach enclosure.
Household Chemicals
Keep the enclosure away from:
- Cockroach sprays
- Fly sprays
- Ant killers
- Flea treatments
- Garden pesticides
Products designed to kill pest insects can also kill ornamental cockroaches.
Aerosols
Avoid spraying near the enclosure:
- Air freshener
- Perfume
- Cleaning sprays
- Deodorising aerosols
Natural Materials
Collect leaves and wood only from locations known to be free from:
- Pesticides
- Herbicides
- Road contamination
- Industrial pollution
Quarantine
New cockroaches should ideally be observed separately before introduction to an established colony.
Monitor for:
- Unusual mites
- Injury
- Poor condition
- Unexpected mortality
Health
Domino Cockroaches are generally robust when their basic environmental requirements are met.
Common husbandry problems include:
- Excessive dryness
- Waterlogged substrate
- Poor ventilation
- Overheating
- Inadequate nutrition
- Chemical exposure
Warning Signs
Potential concerns include:
- Repeated unexplained deaths
- Failed moults
- Persistent surface wandering by normally burrowing nymphs
- Severe inactivity under suitable temperatures
- Loss of coordination
Check environmental conditions first.
Nymphs on the Surface
Occasional surface activity is normal.
However, many nymphs suddenly abandoning the substrate can indicate a problem such as:
- Excessive moisture
- Excessive dryness
- Overheating
- Poor substrate condition
Investigate the enclosure.
Common Husbandry Mistakes
Common mistakes include:
- Substrate that is too shallow
- Insufficient leaf litter
- Allowing the enclosure to dry completely
- Keeping everything constantly saturated
- Poor ventilation
- Excessive heat
- Removing all substrate from breeding colonies
- Assuming hidden nymphs have died
- Overfeeding fresh fruit
- Failing to remove mouldy food
- Using pesticide-contaminated natural materials
- Expecting extremely rapid reproduction
Are Domino Cockroaches Suitable for Beginners?
Yes, provided the keeper understands that they are:
slow-developing burrowing display cockroaches rather than fast-producing feeder insects.
Their basic husbandry is straightforward.
They require:
- Deep substrate
- Leaf litter
- Moderate warmth
- Appropriate moisture
- Good ventilation
- A varied detritivore diet
Their slower development makes patience the main challenge.
Display Value
Adult Domino Cockroaches are particularly attractive display animals.
Their glossy dark bodies and pale circular markings make them look dramatically different from the typical image people associate with a cockroach.
A naturalistic enclosure containing:
- Leaf litter
- Cork bark
- Moss
- Decaying wood
can make an excellent invertebrate display.
Educational Value
Therea petiveriana provides opportunities to observe:
- Cockroach development
- Incomplete metamorphosis
- Burrowing behaviour
- Detritivore ecology
- Moulting
- Ootheca production
- Cryptic juvenile colouration
- Dramatic adult colouration
The difference between nymphs and adults is particularly interesting.
Ecological Role
In natural ecosystems, detritivorous cockroaches contribute to:
nutrient cycling.
By consuming decomposing organic material, they help break down:
- Dead leaves
- Plant debris
- Other organic matter
This returns nutrients to the ecosystem.
Responsible Sourcing
Captive-bred animals should be preferred.
When purchasing a starter colony, ask:
- Is the species correctly identified?
- Are multiple ages represented?
- Are the animals captive-bred?
- What conditions has the colony been maintained under?
Similar Species
Several ornamental cockroaches can superficially resemble members of Therea.
Accurate scientific identification is important, particularly for breeding colonies.
Avoid mixing different Therea species unless there is a specific husbandry reason and reproduction is prevented.
Maintaining Pure Colonies
Keep separately labelled colonies when maintaining multiple Therea species.
Do not intentionally produce unidentified hybrids.
Accurate captive records benefit the wider invertebrate hobby.
Legal Considerations
Regulations concerning exotic cockroaches vary by jurisdiction.
Restrictions may apply to:
- Possession
- Import
- Export
- Breeding
- Sale
- Transport
Always verify current rules before obtaining the species.
Never Release Captive Cockroaches
Never release:
- Adults
- Nymphs
- Oothecae
into the environment.
Unwanted animals should be responsibly rehomed.
Responsible Ownership
Before obtaining Domino Cockroaches, ensure you can provide:
- Secure housing
- Deep organic substrate
- Abundant leaf litter
- Appropriate warmth
- Moderate moisture
- Good ventilation
- Suitable supplementary food
- Long-term colony space
Remember that much of the colony may remain invisible beneath the substrate.
Summary
The Domino Cockroach (Therea petiveriana) is a distinctive ornamental cockroach from India, famous for the contrasting pale spots displayed by its dark adult form.
Its nymphs look completely different from the adults and spend much of their development buried beneath substrate and leaf litter.
Successful husbandry requires a secure enclosure, approximately 5–10 cm or more of organic substrate, abundant deciduous leaf litter, moderate warmth, good ventilation and a moisture gradient.
A temperature range of approximately 22–28°C, with around 24–26°C providing a useful routine target, works well for many colonies.
The substrate should remain slightly moist without becoming waterlogged. Maintaining one somewhat moister area and another relatively drier area gives the animals a choice of microclimate.
Domino Cockroaches are omnivorous detritivores. Decomposing leaves and other safe organic material should form an important part of the enclosure, supplemented with vegetables, moderate amounts of fruit and suitable dry foods.
The species can be maintained in groups and breeds through deposited egg cases called oothecae. These are often concealed within the substrate, so breeding colonies should not undergo unnecessary complete substrate changes.
Development is relatively slow. Nymphs may remain hidden underground for many months before eventually becoming the striking black-and-white adults.
With patience, deep substrate, plentiful leaf litter and stable environmental conditions, Therea petiveriana makes an attractive and fascinating colony species for both newer and experienced invertebrate keepers.
IMPORTANT INFORMATION
This care sheet provides general husbandry guidance and does not replace current species-specific research or applicable wildlife, agricultural, import or invasive-species legislation.
Domino Cockroach nymphs are strongly burrowing and may remain hidden for long periods. Do not assume a colony has failed simply because few animals are visible.
Provide deep organic substrate and abundant pesticide-free deciduous leaf litter. Leaf litter functions as both shelter and part of the diet.
Maintain moderate moisture while providing good ventilation. The enclosure should be neither completely dry nor permanently saturated.
Breeding females deposit oothecae within sheltered areas and substrate. Avoid unnecessary complete substrate replacement because eggs and tiny nymphs may be accidentally discarded.
Fresh food should be removed before it develops heavy mould or fermentation.
Never use household insecticides or pesticide-contaminated natural materials around the enclosure.
Keep different Therea species separately when maintaining breeding colonies to preserve accurate captive lines.
Never release captive adults, nymphs or oothecae into the environment.
Always verify current regulations concerning possession, breeding, sale, transport, import and export in your jurisdiction.
Information correct at the date of publication.
reptilecommunity.com | Revised: August 2026