Cockroach Eggs of Different Species {Every Info You Want}

Cockroaches in your house- this one line can create enough panic and now imagine ‘cockroaches laying eggs in your house’- well, this is like a never-ending bad dream and although as unfortunate as it sounds, this is how an infestation begins.

Even though there are now many remedies available to deal with such problems, you first need to understand what exactly are you dealing with and this article is here to help you do that.

Keep reading to find out everything you need to know about cockroaches egg and how to get rid of them.

What Does Cockroach Eggs Look Like?

Cockroaches lay multiple eggs at a time and these eggs are all inside a single casing known ‘ootheca’.

The egg capsules are usually dark-brown to reddish-brown in color and range from 5 to 14 mm long depending on the species of cockroach you are dealing with and despite what some people believe, the egg case of cockroaches can be spotted and seen with naked eyes however they can be sometimes overlooked because they are glued to or deposited in hidden places which are not easily visible to us like under wooden furniture, behind photo frames, etc.

Eggs of different roach species

Finding an egg case is a sign of infestation in the home.

American Cockroach Eggs 

One of the most common cockroach species is the American cockroach; they prefer warm and damp places and usually enter houses to find water and food.

Female American cockroaches, during reproduction, create shielding cases for their eggs. These cases are shaped like capsules that are deposited by the female cockroaches in a humid, warm area.

An average American cockroach egg case contains about 16 to 17 eggs and when they hatch, tiny nymphs come out of these capsules. The cockroaches emerge from eggs in 6–8 weeks and need 6–12 months to mature.

These egg cases are about 35-38 mm long. They are dark-colored—blackish or reddish-brown. People usually find these egg sacks in basements, kitchens or laundry rooms, under cabinets or appliances, etc. American cockroaches also deposit their eggs behind stored items in sheds and garages. 

Roach eggs

German Cockroach Eggs

The German cockroach is another concerning pest that reproduces very quickly and efficiently.

 The female carries the developing eggs inside the capsule and deposits the capsule right before the eggs hatch.

A German cockroach’s ootheca is brown-red in color and mostly measures between 6 to 9 mm in length. The female cockroach carries around the ootheca until the eggs inside it are ready to hatch.

After depositing the egg sack, the females can start producing more eggs in a couple of weeks.

One single ootheca can accommodate up to 50 nymphs. Female German cockroaches can usually produce between 4 and 9 egg capsules in a lifetime and for an egg to develop into an adult usually takes up to 103 days on average.

Because German cockroaches can produce multiple egg sacks containing large numbers of eggs, populations can grow rapidly in a relatively short period. A typical German cockroach infestation will contain around 75% nymphs in the population.

FAQ about Roach Eggs

What is a Cockroach Egg Case?

Cockroach egg case, also known as oothecae is a protective outer shell that protects the nymphs inside. Oothecae hold numerous eggs that are encompassed by a protein substance that slowly hardens into a protective, strong casing. 

What is the Size of Cockroach Egg?

The size of an average cockroach egg case is approximately 0.9cm. It’s brownish-red in color and is long-shaped like a dry kidney bean. Depending on the species of the cockroach, an egg case contains between 16 – 50 eggs.

How long does it take for a cockroach egg to hatch?

An average cockroach egg takes 7-8 weeks before they hatch and the nymphs grow big enough to leave. While some female cockroaches drop the egg case after producing them, other species carry it until they are ready to hatch.

Where do cockroaches lay their eggs?

Female cockroaches usually deposit their egg sacks in protected locations away from the sight of humans like crevices and corners of your house.

You might normally find them in your bathroom corners and kitchen, under your pipes and near your sinks, under furniture and drawers and in the dark recesses of your basement and pantry, etc.

What kills roaches and their eggs?

There are many remedies available to kill roaches and their eggs, while there are some home DIY solutions that you can use for example diatomaceousearth, boric acid, essential oils, etc., insecticides and pesticides specifically manufactured to deal with this problem are a common choice among people.

However, in case of a serious infestation, it is always advised to hire the services of the professionals who are aptly prepared to deal with such nuisances.

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Final Words

The fact that you have cockroach eggs in your house is a wake-up call for you because this means that there is a chance of a major infestation, and getting rid of an infestation is sometimes much harder than it looks because it usually consists of innumerable small pests still yet to grow into adults and therefore getting rid of them gets that much more difficult.

Hence, it is better to make sure that you don’t let the situation escalate and take all the necessary precautions to keep this problem at bay and away from your house.

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