🐾 LandCare difficulty: IntermediateLegal complexity: Low
Domino Cockroach
Therea petiveriana · also called Seven-spotted cockroach, Desert cockroach, Indian domino roach
A strikingly patterned ornamental cockroach from southern India prized as a display species. Adults forage above ground while nymphs spend most of their time buried in deep substrate.
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Quick facts
| Size | Adults about 20-27 mm long; rounded, beetle-like body with bold black-and-white 'domino' spotting. Nymphs are flattened, drab burrowers. |
| Lifespan | 1–2 years |
| Social needs | group |
| Native region | Southern India (dry scrub and forest-floor habitats) |
| Origin | Old World |
| Climate | ⛅ Subtropical |
| Family | Corydiidae |
| Genus | Therea |
Part of the Cockroaches
Pet and display cockroaches — from ornamental domino and giant cave species to feeder colonies — kept in ventilated tubs with appropriate substrate, warmth, and a simple omnivorous diet. Hardy, harmless, and fascinating, though local and federal pest-species regulations apply.
Habitat & space requirements
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.
Life & growth stages
How this animal changes through its life — each stage often has its own care, diet and space needs.
Habitat & enclosure
Keep a colony in a well-ventilated terrarium or tub with at least 8-12 cm of substrate for the burrowing nymphs. Maintain 24-28C (75-82F); they tolerate a warm, fairly dry setup better than soggy conditions. Provide leaf litter, bark, and flat hides on the surface. Keep most of the substrate slightly damp with a drier surface layer. Nymphs cannot climb smooth surfaces and are flightless, but adults have a limited ability to climb glass and the species is flightless overall, so use a secure, ventilated lid to keep adults in and pests out.
Substrate
A deep, mostly dry-to-slightly-damp mix of coconut fiber and/or organic topsoil with plenty of leaf litter and rotten wood for the nymphs to burrow through and feed on. Keep the lower layers lightly moist and the surface drier to mimic their seasonally arid native habitat.
Equipment & setup
A heat mat on the side or under one end if your room is below ~22C, controlled by a thermostat. No UVB needed. Cross-ventilation (mesh panels) is important to prevent stagnant, damp air. A hygrometer/thermometer helps; water gel crystals or a shallow sponge dish provide safe hydration.
Diet
Omnivorous detritivores. Offer a staple of dry dog/fish food or grain-based roach chow plus fresh produce (carrot, apple, leafy greens, squash) and dried leaf litter. A calcium source and occasional protein keep the colony productive. Remove uneaten fresh food before it molds; provide water via gel crystals, a damp sponge, or fresh produce to avoid drowning risk.
Behavior & temperament
Peaceful, social, and entirely harmless to humans — no venom, no bite. Primarily nocturnal-to-crepuscular, though adults are frequently seen moving on the surface by day, making this a genuine display roach; nymphs burrow and are rarely seen. The species is flightless and nymphs cannot climb glass; adults have only a limited climbing ability, so escapes are uncommon with a proper lid. Best kept as a colony; they are observed rather than handled, though they tolerate gentle contact.
Health
Hardy if kept warm with good ventilation. The main pitfalls are excessive moisture (leading to mold, mites, and nymph die-off) and chilling, which stalls breeding. Slow population growth is normal — this is not a fast-breeding feeder species. Grain mites and fungus gnats indicate the substrate is too wet.
Tips, DIY & hacks
Start with a group of 20+ to establish a self-sustaining colony, since they breed slowly. Be patient: nymphs take months and stay buried, so resist digging through the substrate. As a slow-breeding ornamental that is flightless and a poor climber, this is among the least objectionable roaches to keep, and it is legal in most places — but in the US, keeping non-native cockroaches can require a USDA permit and some states/countries restrict roach species, so check your local and federal regulations before ordering.
Sources
- Therea petiveriana — Roach Crossing care information (reference)
- Therea petiveriana — Wikipedia (reference)
- Wikipedia: Domino Cockroach (wiki)