© Nandini Rajamani / CC BY 4.0Question Mark Cockroach
The Question Mark Cockroach is a striking Indian species named for the cream-colored question-mark markings on its dark body. Unlike most roaches, it's active during the day, making it easy to observe its behavior in captivity. Nymphs take a long time to mature—sometimes nearly two years—but the wait pays off with strikingly patterned, display-worthy adults. Calm and slow-moving, it's a rewarding next step for keepers who already have some experience with unusual invertebrates.
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Apply as a breederQuestion Mark Cockroach key facts
- Care level
- Intermediate
- Lifespan
- 2-3 years
- Size
- 2.2-3cm
- Temperature
- 21〜29℃
- Diet
- Vegetables, fruit, grains, prepared insect food, dried hardwood leaves
- Temperature & Humidity
- Tolerates a wide 21-29 C. Keep the substrate on the dry side with one damp corner for oothecae.
- Enclosure
- A deep, layered substrate with crushed dead hardwood leaves is needed for healthy nymphs. Adults of both sexes climb glass, so seal the lid.
- Diet & Feeding
- Combine vegetables and fruit with grains or prepared insect food, and keep crushed dried hardwood leaves available.
- Temperament & Venom
- No venom and no biting. They are active by day, which makes them easy to observe.
- Notes
- Growth is slow and nymphs can take close to two years to mature; oothecae take about three months to hatch.
About Question Mark Cockroach
An Indian cockroach with cream question-mark markings on a dark body. Active by day and easy to observe, it takes time to mature but rewards patient keepers with striking, display-worthy adults.
7 things to know before welcoming a Question Mark Cockroach
1Active During the Day
Unlike most cockroaches, the Question Mark Cockroach is active during daylight hours. You can watch it feed and move around throughout the day, making it easier to enjoy than nocturnal invertebrates.
2Patience for Nymphs
The nymph stage is long, and some individuals take nearly two years to reach adulthood. This species suits keepers who enjoy watching gradual growth rather than seeing the finished pattern right away.
3Compact Adult Size
Adults measure about 2.2 to 3 cm, making them fairly compact compared to larger invertebrates. This modest size makes them easier to house even with limited space.
4Watch Temperature & Humidity
As an Indian species, it prefers moderate warmth and humidity. Avoid letting the substrate dry out completely or exposing it to prolonged cold, and check moisture levels regularly.
5Calm, Shy Temperament
Movements are relatively slow and the species isn't aggressive, though it tends to hide when startled. It's better suited to observation than frequent handling.
6Intermediate Care Level
This species is considered suitable for intermediate keepers. Prior experience with basic invertebrate care makes it easier to manage temperature, humidity, and feeding schedules.
7Provide Hiding Spots
Even though it's active by day, this species still likes to retreat into cover. Adding substrate, bark, or cork bark hides helps it feel secure, so set up the enclosure layout before bringing one home.
Frequently asked questions about Question Mark Cockroach
- Q.Is the Question Mark Cockroach good for beginners?
- A.It's generally considered suitable for intermediate keepers rather than complete beginners. Having some basic experience with invertebrate care makes temperature and humidity management easier, so it's worth starting with an easier species first if you're new to the hobby.
- Q.Is it true this species is active during the day?
- A.Yes — unlike most cockroaches, this species is diurnal. That means you can regularly watch it feed and move around during daylight hours.
- Q.How long does it take to reach adulthood?
- A.The nymph stage is long, and some individuals take nearly two years to mature into adults. This species suits keepers who enjoy watching gradual, long-term growth.
- Q.How big do adults get?
- A.Adults reach about 2.2 to 3 cm in length. That's fairly compact compared to larger invertebrate species, so they don't need much space.
- Q.Are there any legal restrictions on keeping Question Mark Cockroaches?
- A.Question Mark Cockroaches are not covered by CITES. There's no need to worry about CITES-related paperwork for this species.
Learn more about Question Mark Cockroach in the encyclopedia
View Question Mark Cockroach encyclopedia entry →
Care difficulty, lifespan, size and diet — all basics covered.
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