The German cockroaches are the most common species in Utah. Adults are pale brown to tan and about 1/2 inch in length. Adults have wings and are distinguished by having two dark stripes that run lengthwise along the pronotum that is located at the back or top of the head. This species has the highest reproduction potential, mean it is capable of laying the greatest number of eggs in the shortest life cycle, of all the house infesting cockroaches.
Females carry their egg capsule protruding from their abdomen until the eggs are ready to hatch. Females produce 4 to 8 capsules in their lifetime. Each capsule contains 30 to 50 eggs, which hatch in about 28 days at room temperature. The eggs usually die if the mother is killed. Females usually live an average of 250 days. German cockroaches are generally found close to moisture and food, such as in kitchens and other food areas, restrooms, and around plumbing fixtures. Infestations found scattered throughout a building, including nonfood areas, indicate very high populations.