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Cockroaches are one of the most resilient and widespread pests in the world. They can quickly take over houses, breeding quickly and hiding in crevices while they eat and lay eggs. But what do those eggs actually look like? In this article, we will describe the size and color of cockroach eggs, how they are laid, and how to identify them during an infestation.

What Cockroach Eggs Look Like


Cockroach eggs are small, about 0.9mm to 1.3mm in length, and are yellow to orange in color when first laid. They usually come in a capsule-like capsule made out of a protein substance called chitin, or in clusters of egg cases, called Ootheca. The capsule usually contains between 10-50 eggs and can be up to 1cm long.


The egg cases, or ootheca, come in various shapes, depending on the species of cockroach. The most common is that of the German cockroach, which is a brown, oval-shaped capsule with a raised pattern on it. Other species of cockroaches such as the American and Oriental cockroaches have ootheca that are dark brown or black and either flat or slightly domed.


Cockroach eggs can take anywhere from several weeks to several months to incubate and hatch, depending on the species. The American cockroaches have a longer incubation period than the German cockroaches. Once hatched, the nymphs, or baby cockroaches, will take approximately two years to reach adulthood.

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People Also Ask

Do cockroaches lay eggs?

Yes, cockroaches lay eggs in their egg cases or ootheca.

How many eggs do cockroaches lay?

Most cockroaches lay 10-50 eggs in one ootheca.

Where do cockroaches lay their eggs?

Cockroaches usually lay their eggs in dark, damp and protected areas such as behind kitchen appliances, in crevices, and under furniture.

Are cockroach eggs hard to see?

Yes, cockroach eggs are very small and can be difficult to see, but if you know what to look for, you can identify them with a close visual inspection.

Can cockroach eggs hatch without a female?

No, cockroach eggs require a female to lay in order to hatch.

Final Words

Cockroaches are pests that can quickly take over a home, and their eggs can be hard to spot due to their small size. To identify cockroach eggs, look for yellow to orange, capsule-like ootheca in dark, damp, and protected areas. Knowing what cockroach eggs look like can help you to identify and treat an infestation quickly and effectively.