The Oriental cockroach, despite its name, is belived to have originated in North Africa in areas with summer heat and moderate winters. In Great Britain it is known as the "black beetle" or "common roach" and is the most important cockroach pest. In the United States, however, it is less common than the german roach and is often referred to as a "waterbug". This roach species is easily identified. It is uniformly dark brown to black in color and about 1 1/4 inches in length. The wings of the male cover about 2/3 of the abdomen; females have characteristic short wing pads. Oriental roaches are slower moving and less wary than other domestic species. The egg capsule is more than 1/4 inch long and is not symmetrical. The capsule has no subsegments to indicate egg position and lacks lateral indentations. The first indication of an infestation may be old scattered roach parts on the floor or individual roaches caught in spider webs.
The Oriental cockroach is one of several species in the U.S. which can cause serious problems in buildings. It is more closely associated with filth and cool, dark damp areas than any of the other roach species. It is most often found in basements, crawl spaces, utility rooms, sewers and old incinerators used for trash chutes. This species fares better outdoors than most and can be found under debris, leaf litter, mulch and dense vegetation near a house and in water meter vaults.
The Oriental cockroach is long-lived- the entire life cycle is about 22 months. The egg capsule contains 12-16 eggs. After hatching, the nymphs develop into adults after several instars over a period of 17 months. The adults live 1-4 months. During that time, each female deposits an average of 12 capsules producing approximately 196 offspring.
Reducing the humidity and increasing the light and air circulation in problem areas will help control infestations. Removing food, trash and debris will help reduce harborage in nesting areas. Floor drain and condensation line traps should be full of water to prevent migration from the sewer. Abandoned drain lines should be capped. Loose bait formulated for damp areas can provide effective control in basements and crawl spaces.
For more information on Oriental Cockroaches, suggested products and treatment instructions, please contact any of the store locations below.