American roachAmerican – American cockroach adults range in size from 1½ to 2 inches. Generally, they are red-brown in color, with pale yellow “halo-like” markings behind the head. The nymphs are about ¼ inch long when they hatch from the egg case and are initially gray-brown. As they develop, they become more red-brown and the “halo” becomes more prominent. American cockroaches are often found in dark, moist, warm areas, especially around sewers, storage rooms, and garbage areas. Along the coast they may be found in trees. When inside, they generally stay on the basement and first floor levels. Adults may fly on warm evenings.

German roachGerman – The most persistent cockroach pests are the smaller kinds that live and breed indoors with people. This includes the very common German cockroach and the less common brownbanded cockroach. German cockroach adults are 1/2 to 5/8 inch long and pale brown or tan with two parallel black streaks behind the head. Unlike most cockroaches, German cockroach females protect their egg cases by carrying them around. The egg case protrudes from the body until the eggs are nearly ready to hatch. Each egg case contains thirty to forty eggs that take about 2 weeks to hatch. A female German cockroach may produce one to seven cases during her life. German cockroach nymphs are about 1/8 inch long when they hatch and uniformly dark, except for a lighter brownish area in the middle of the body. German cockroaches are mainly found in kitchens and bathrooms around sinks and drains, behind refrigerators and stoves, and in cabinets. However, if sanitation is poor, German cockroaches may be found in other places. Even though adult German cockroaches have wings, they do not fly.

Oriental roachOriental – Oriental cockroach adults are 1 to 1¼ inches in length and dark-brown to jet black in color. The wings of the males are 2/3 the length of the body, while the females have only small wing pads. Neither sex is capable of flight. The nymphs are about ¼ inch long when they hatch and go from red-brown to black as they develop. Oriental cockroaches prefer dark, damp, and relatively cool locations. They can be found in water meter boxes, sewer lines, leaf litter, crawl spaces, and basements. In a structure, they rarely go above the basement level