Types of Cockroaches In Australia

There are many types of cockroaches in New South Wales, and correctly identifying the one infesting your property is essential for effective treatment. This cockroach control is crucial, as cockroaches bring diseases such as Salmonella, Staphylococcus, E. coli and worms, as well as triggering asthma and eczema symptoms. Below are the most common cockroach species we treat in Newcastle, Lake Macquarie, Port Stephens, Maitland and the Hunter Valley. Contact Rebel Pest Professionals for cockroach extermination today.

Oriental Cockroach

Also known as the “water bug”, oriental cockroaches are found worldwide.

Appearance and characteristics

Glossy dark brown to black in colour. They are usually 20-25mm long. The female oriental cockroach has under-developed wings, meaning she can’t fly, while the male’s wings are around ¾ of the length of the abdomen. The males generally don’t fly but can if they need to. The females also have a thicker body than the male.

Lifecycle

Once fertilised, the female oriental cockroach will carry up to 18 eggs in an ootheca (egg sac) inside the abdomen. Depending on the temperature, the nymphs will hatch in 7-11 weeks and tend to live for 12 to 18 months.

Habitat

The oriental cockroach prefers dark, moist areas, often found in drains, sewers and basements. They feed on decaying organic matter so they also can be found outside in garbage, mulch and leaf cover.


American Cockroach

One of the largest pest varieties found worldwide.

Appearance and characteristics

American cockroaches are a glossy reddish-brown colour, with lighter yellowish on the head and legs. Adults can grow from 2.9 to 5.3cm in length. Male American cockroaches have long wings which overlap the body, while the female’s wings are shorter, roughly the same length as the abdomen.

Lifecycle

The female will carry up to 16 eggs in the ootheca (egg sac) inside the abdomen. Nymphs will hatch anywhere between 4 to 8 weeks, depending on the temperature and will develop wings when they turn into adults. American cockroaches can live from 3 months to 2 years.

Habitat

American cockroaches prefer dark, quiet, humid areas so they are often found in the sub floor, roof voids and under bathroom or kitchen sinks. They also live on trees.


Australian Cockroach

Despite its name, Australian cockroaches are not actually native to Australia. They most likely originated in Africa and can be found in tropical climates worldwide.

Appearance and characteristics

The Australian cockroach is very similar in appearance to the American cockroach, with a glossy reddish-brown body and lighter coloured head and legs. They have yellowish streaks near the wings and head. Adults can reach 2.3 to 3.5cm in length. Both the male and female Australian cockroach have fully developed wings and can fly.

Lifecycle

The female can carry up to 24 eggs in the ootheca (egg sac) inside the abdomen. Nymphs will hatch between 4 to 8 weeks and will take 1-2 months to mature. Australian cockroaches live for around 3 to 12 months.

Habitat

Australian cockroaches prefer dark, warm and humid areas and are often found in subfloors, roof voids, under kitchen or bathroom sinks or outside in bins in warmer climate areas.


Brown Banded Cockroach

The brown banded cockroach is one of the smallest types of cockroaches found in Australia.

Appearance and characteristics

So named after the light brownish/tan coloured bands seen on the wings of the adult and across the body of nymphs. They are brown to black in colour and 1-1.5cm in length. The brown banded cockroach can fly, but will only do so in warmer climates.

Lifecycle

The female brown banded cockroach can carry up to 18 eggs inside the ootheca (egg sac) inside the abdomen. Nymphs will hatch between 4-8 weeks and will take 3-9 months to mature. They can survive for 3 to 12 months.

Habitat

The brown banded cockroach can survive in drier environments than other types of cockroaches, so they are often found in rooms throughout the house, as well as basements, roof areas and under bathroom or kitchen sinks.


German Cockroach

Of all the types of cockroaches, German cockroaches are the most common worldwide and the hardest to exterminate. If we find German cockroaches in your home, we will take additional measures to ensure they are eliminated.

Appearance and characteristics

The German cockroach varies in colour from tan to black, with two stripes running from the base of the head to the tips of the wings. They are large in size, from 1.1cm to 1.6cm in length. Unlike the Oriental and American cockroaches, the German cockroach cannot fly. It will emit an unpleasant odour when frightened.

Lifecycle

Once fertilised, the female carries up to 50 eggs in the ootheca (egg sac) inside the abdomen. After about a month, the eggs will hatch and reach maturity in 6-12 weeks. The German cockroach lives for 6-12 months.

Habitat

German cockroaches prefer warm, dark damp areas such as kitchens and bathrooms. They’re often found under sinks, in cracks and crevices or under electronic goods like fridges, microwaves, dishwashers and washing machines.

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