American Roaches Identification Guide

Periplaneta americana

American cockroaches are the largest common roach species found in homes, reaching up to 2 inches in length. Known for their reddish-brown color and yellowish figure-eight pattern behind the head, they prefer warm, humid environments like basements, crawl spaces, and sewers.

Taxonomy

Kingdom: Animalia Phylum: Arthropoda Class: Insecta Order: Blattodea Family: Blattidae
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Close-up of an American cockroach showing its reddish-brown coloring and yellowish figure-eight pattern behind the head

American Roaches Coloration

Common color patterns to help identify american roaches

Reddish-Brown
Brown
Tan
Quick Identification

American Roaches

Low Property Risk
Size
30–53 mm
Type
Cockroach
Legs
6
Wings
Yes
Can fly

Seasonal Activity

When american roaches are most active throughout the year

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
None Low Moderate High
Photo Gallery

American Roaches Identification Guide

Physical Characteristics

American roaches are reddish-brown in color with a yellowish figure-eight pattern behind their heads. They are the largest common roach species found in homes, often reaching up to 2 inches in length. Their long antennae and fully developed wings allow them to glide short distances, though they are more commonly seen running. These roaches prefer warm, humid environments and are often found in basements, crawl spaces, and kitchens.

Common Species

Periplaneta americana (American Cockroach)

American Roaches Behavior and Biology

American roaches thrive in warm, damp areas such as sewers, drains, and basements. They are omnivorous scavengers, feeding on decaying organic matter, food scraps, and even paper or fabric in extreme cases. These pests reproduce quickly, with a single female capable of producing over 150 offspring in her lifetime. Their nocturnal nature makes them more active at night, when they search for food and moisture sources.

How We Treat for American Roaches

When treating for American roaches, our technicians focus on inspecting basements, crawl spaces, and other damp areas for signs of activity such as droppings or live roaches. Our process includes:

  • Inspection: Identifying entry points, moisture issues, and harborage areas.

  • Treatment: Applying repellent and non-repellent insecticides inside and outside the home, targeting cracks, crevices, baseboards, and potential entry points.

  • Moisture Control: Recommending steps to reduce humidity, fix leaks, and seal cracks around pipes and drains.

  • Ongoing Prevention: Regular maintenance and preventative treatments to keep American roach populations under control.

Other Cockroaches

Explore other species in the cockroaches family

Commonly Confused With

American Roaches are often mistaken for these similar pests

Where American Roaches Are Found

Hover over states to see their names. Green regions indicate where american roaches have been reported.

Present (65 regions)Not reported
US: 51Canada: 6Mexico: 8

Common Questions about American Roaches

How do American roaches get inside my home?

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They typically enter through cracks in foundations, gaps around doors and windows, or by hitchhiking in grocery bags, cardboard boxes, or drains.

Are American roaches dangerous?

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Yes. They can carry bacteria like salmonella and E. coli, contaminating food and surfaces. Their droppings and shed skin can also trigger allergies and asthma in sensitive individuals.

Can American roaches fly?

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While they have wings, they are mostly gliders and prefer to run rather than fly.

How long does it take to get rid of American roaches?

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Depending on the severity of the infestation, full elimination can take several treatments over a few weeks. Our seasonal treatment plans ensure long-term control.

What should I do to prevent American roaches?

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Reduce moisture by fixing leaks and using dehumidifiers, seal cracks and gaps, store food in airtight containers, and maintain regular professional pest control services.

More Resources About American Roaches

Explore our guides and articles for more information about american roaches.

George Schulz
About the Author
George Schulz

With five years of hands-on experience in the pest control industry, George Schulz is a registered technician with the Virginia Pest Management Association and a proud third-generation professional in a family business that's been protecting homes for over 57 years. He manages and trains a team of service pros while also leading internal research efforts—recently spearheading a deep-dive review of thousands of documents on pest control materials to hand-pick the most kid and pet friendly, most effective solutions tailored specifically for homes in the DC metro area.

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