German vs. American Cockroaches on Long Island: How to Tell the Difference
Long Island sees two main cockroach species in homes: German cockroaches and American cockroaches. They look different, behave differently, and need different treatment. Here's how to tell them apart.
German Cockroaches
- Size: About 1/2 inch — small and light brown
- Markings: Two dark stripes on the pronotum (the area behind the head)
- Where you find them: Kitchens, bathrooms, behind appliances, inside cabinets — wherever there's warmth, food, and water
- Reproduction: Extremely fast. A few can become hundreds in weeks
- Resistance: Many populations have built resistance to over-the-counter sprays
For German cockroaches, see our German cockroach treatment.
American Cockroaches
- Size: 1.5–2 inches — large and reddish-brown
- Markings: Yellow figure-8 pattern on the pronotum
- Where you find them: Basements, garages, sewers, crawlspaces, drains
- Behavior: Can fly short distances; drawn to moisture
- Entry: Often through floor drains, sump pits, and foundation cracks
For American cockroaches, see our American cockroach treatment.
How to Identify Yours
Look at size and color first. Anything bigger than an inch is almost certainly American. Smaller, lighter roaches in a kitchen are almost certainly German. When in doubt, capture one in a sealed bag and we'll identify it on-site.
Why Identification Matters
The species determines the treatment. Spraying for an American cockroach problem won't solve a German cockroach issue — and vice versa. Read our step-by-step cockroach treatment process for what comes next.