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What do cockroaches look like?

Cockroaches are found all over the planet and if you live in a city, it is likely that you have seen them in the alleys, among the garbage cans or even running around your business. They are unsanitary scavengers that humans have battled for centuries.

There are so many varieties of cockroach of various  sizes, shapes and colors that it can be hard to identify them. If you find insects scurrying around your restaurant kitchen floor, beneath the sink or in the pantry, it is very difficult to identify the pest accurately. How can you tell the difference between a cockroach and a variety of beetle or weevil? What do cockroaches look like?

Rentokil knows what cockroaches look like. Contact us here!

Cockroach description

Cockroaches are six-legged insects and, according to scientists, they have remained pretty much the same as they were back when dinosaurs roamed the planet.

Cockroaches have:

  • Six legs
  • Flat bodies
  • A thorax with three segments
  • An abdomen with ten segments
  • Large compound eyes
  • Two large, flexible antennae
  • A tough exoskeleton
  • Wings
  • Small claws at the end of their legs

They range in size from about an inch long to some species that can be up to three inches long. The heaviest cockroach can weigh more than 30 grams.

Bugs that look like cockroaches

There are a number of insects that are commonly confused with cockroaches. It is important to know exactly what pests are on your property in order to provide the right pest control program and services.

ground beetle

Ground Beetles

Though similar in shape and color as cockroaches, close examination shows the head and body of ground beetles are differently shaped. Many beetles, such as June bugs, can fly and do so often. Cockroaches rarely fly.

water bug

Water Bugs

Often confused with cockroaches, they look very similar as they have roughly the same shape and color. However, water bugs are blood-feeding insects and are generally larger than roaches. Water bugs prefer to be around water.

cricket

Crickets

Their size and shape can cause confusion among homeowners. Crickets have differently shaped legs and many species are smaller and darker in color than cockroaches. The back legs allow them to jump high and far.

The pest control professionals

The best way to make sure that the insects that you find around your business are cockroaches is to call in the highly trained technicians at Rentokil. We are cockroach experts and can identify which insect is infesting your business. We can discuss the proper cockroach control and prevention methods that will work best for your property.

The first step is to schedule a free inspection of your business by calling us at 800-837-5520 or use our online contact form.

Cockroach species

There are over 3,000 different types of cockroaches — some are considered pests while others are beneficial in their natural environment.

The three main types of cockroaches commonly found in businesses in the U.S. include the German cockroach, Oriental cockroach and American cockroach.

Find more detailed information below about these common species.

German Cockroach

(Blatella germanica)

German Cockroach

Appearance

  • Color: Light brown with 2 dark longitudinal stripes on their pronotum
  • Length: 12-15mm
Lifecycle and habits of the German cockroach

Lifecycle

  • Females carry 35-40 eggs in an ootheca (egg case) until they are ready to hatch
  • Eggs hatch in 1 month
  • Nymphs take between 6 weeks to 6 months to develop into adults
  • 3-4 generations per year.

Habits

  • Most commonly found indoors.
  • Prefer wet, humid conditions and are typically found in kitchens and bathrooms

Oriental Cockroach

(Blatta orientalis)

Oriental cockroach

Appearance

  • Color: Dark brown or black
  • Length: 20 -25mm
  • Wings: Undeveloped in females and cover ¾ length of the abdomen in males
Lifecycle and habits of the oriental cockroach

Lifecycle

  • Females deposit 16 eggs in an ootheca (egg case)
  • Eggs hatch in 2 months
  • Nymphs take 6-18 months to develop into adults

Habits

  • Thrive in cool, damp areas, drains and openings beneath porches
  • Known for their preference for feeding on garbage and decay
  • Often found in landfills and leaf litters
  • Runs instead of flying

American Cockroach

(Periplaneta americana)

The American cockroach is one of the largest pest cockroaches to invade commercial properties.

American cockroach

Appearance

  • Color: Red–brown
  • Length: 35-40mm
  • Wings: Longer than the body in males and only just overlap the abdomen in females
Lifecycle and habits of the American cockroach

Lifecycle

  • Females carry the ootheca (egg case) with up to 16 eggs inside for several days depositing it
  • Oothecae are sometimes cemented down and tend to be grouped
  • Eggs hatch in 1-2 months
  • Nymphs usually develop in 6 -12 months, can take up to 15 months

Habits

  • Prefers dark, humid and undisturbed areas such as subfloors, basements, kitchens, roof voids and bathrooms
  • Sometimes live on trees
  • Runs but may fly in very high temperatures
Rentokil knows what cockroaches look like. Contact us here!

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