The Smokybrown cockroach is closely related to the American cockroach , but is a uniform shiny, dark-brown or mahogany color. It is about 1 ¼ to 1 3/8 inches long; the wings of both sexes cover the abdomen. The female Smokybrown has a broader abdomen than that of the male and lacks styli. Young nymphs have white markings on the thorax and abdomen, and on some antennal segments. Older nymphs are uniformly dark brown. Reported in Florida as early as 100 years ago, this roach has become a major pest in many parts of the United States. It is most prevalent in the moist regions, Gulf Coast states and southern and eastern portions of Mississippi, Alabama and Florida. Due to its large size and the speed at which it moves, this is not one of the most popular visitors in any home.
The Smokybrown cockroach has a great tendency to lose moisture through the cuticle and thus requires water every two to three days. These requirements are important to remember when implementing your roach extermination program. This pest is most likely found in areas which are protected, moist, dark, relatively warm and free from the desiccating effects of air flow. In nature, tree holes and the canopies of palm trees offer the ideal environment in which this bug can thrive. The home equivalent of these conditions include: