A Guide to the Cockroaches Identification of Australia

Cockroaches Identification

Cockroaches Identification Guide

Cockroaches have been on the Earth for millions of years. The world currently has about 4,000 different cockroach species in existence. In Australia, roughly 450 of those cockroach species are within its states and territories. They can become annoying pests for homeowners if the conditions of their homes are inviting to the cockroaches. If you know more about the Cockroaches Identification then it will help you to get rid of them easily using the proper treatment.

Of course, each type of cockroach has its own unique characteristics. But if there are areas of your home with exposed food, organic materials, moisture, water, and warm temperatures, then don’t be surprised if you see cockroaches roaming around those areas. Here are the 6 main cockroaches that you need to worry about in Australia and Checkout the Cockroaches Identification Guide:


1) German Cockroaches

German cockroaches are found all over the world. You’ll recognize German cockroaches when you see them because their pronotum has two black stripes on it. When they grow into adulthood, the length of their body may range between 12mm and 15mm.

German cockroaches like to set up their nests indoors because they love humid areas with lots of moisture. Your bathrooms and kitchens are the two biggest attractions for these cockroaches because of their frequent use of water. Kitchens are even more of an attraction when you consider the food in them.

A female German cockroach lays an egg case (ootheca) that contains anywhere from 35 to 40 eggs. It only takes the eggs just one month before they hatch. Over the next 6 months, they will grow to become adults. This cycle happens with new cockroaches about 4 times per year.


2) Australian Cockroaches

 Australian cockroaches love to inhabit gardens and any kind of organic matter or debris. Australians who tend to their gardens may inadvertently bring Australian cockroach eggs into their homes if they don’t clean the soil from their gardening tools beforehand.

At night, the cockroaches from your outdoor vegetation will try to find their way into your home. If you don’t have heavy winters in your area, then you’ll have a greater chance of dealing with Australian cockroaches.

The females of the species lay an egg case called an ootheca. Each ootheca possesses roughly 24 eggs. If they lay one egg case per day, then you can imagine how many eggs will eventually hatch. The growth cycle from nymph to adulthood takes between 6 to 12 months for Australian cockroaches. Despite the name of the species, Australian cockroaches are believed to have originated in the continent of Africa.

American Cockroaches

3) American Cockroaches

American cockroaches are the most recognizable because they’re so large. In fact, they’re some of the largest cockroaches to infest residential and commercial properties in Australia. They have a body length of between 35mm and 40mm, which has a reddish-brown colour.

These cockroaches also go by the name “palmettos” or “palmetto bugs” because of their tendency to inhabit trees. They love dark environments with a lot of humidity and moisture, especially if they’re unlikely to get disturbed by humans or animals. In a home or building, you may find American cockroaches in bathrooms, roof openings, kitchens, basements, and subfloors.

American cockroaches don’t typically fly unless the temperatures are very hot. They will run very quickly to get to where they need to go, which is wherever food may be present. Watch around your kitchens and trash bins because they are the highest risk to have American cockroaches roaming around.


4) Oriental Cockroaches

 Oriental cockroaches prefer cooler environments and damp environments. A lot of restaurants and businesses involved with food storage and preparation will often face the annoyance of dealing with oriental cockroaches. Whenever there is food in a colder environment, such as a walk-in refrigerator or freezer, then you must be on the lookout for them.

Damp areas are another place where oriental cockroaches like to present themselves, such as below garden mulch and flooring, where dampness exists. If organic debris is present in any of these areas, the risk of infestation is even greater. Porches, basements, and drains are the top three places where dampness might attract oriental cockroaches.

Although the oriental cockroaches have wings, they do not fly. Instead, they are very fast runners. A female lays an egg case with approximately 16 eggs in it. The eggs take about 2 months to hatch. The hatchlings need another 6 to 8 months before they grow into adulthood.


5) Brown Banded Cockroach

 Brown-banded cockroaches are much smaller than your average cockroach pests in Australia. The adults-only grow to a length of between 10mm and 15mm. You’ll recognise these particular cockroaches because their abdomens have yellowish-brown stripes on them.

Environments with a lot of warmth and humidity will attract brown-banded cockroaches. If the climate is warm enough, they may even fly with the use of their wings. But most of the time, they will run on the ground in search of food. You can find brown band cockroaches nesting inside of heating houses and buildings.

Their favourite hiding places are ceilings, kitchens, furniture and attics. If you have big appliances or light fittings that generate a lot of heat, they will stay near them as well. Nighttime is when brown-banded cockroaches are most actively searching for food. Any organic materials with lots of starches will be the ideal food for them.

Smoky Brown Cockroach

6) Smoky Brown Cockroach

Smoky brown cockroaches like to stay outdoors for the most part. Their preferred food is plant and vegetable matter. If you have a garden, storage shed, garage, or nursery in your backyard, then you can expect to find smoky brown cockroaches inside of them or around them. It depends on how well secure you keep these areas.

Smoky brown cockroaches will grow between 30 to 35 mm in length. They’re almost all black, but they do have a dark brown colour to them as well. Like with the other cockroaches, they do have wings. However, they’ll only fly in hotter weather conditions. They prefer to run to find their food.

A female smoky brown cockroach will lay an egg case that has between 22 and 26 eggs inside of it. The younger nymph cockroaches don’t have wings, but they’ll grow into adults with wings after 6 to 12 months. Be careful when you have food lying around because they can easily contaminate your food with harmful bacteria.