Oriental cockroaches are found throughout the world and is often referred to as the "waterbug". Adult Oriental cockroach males are usually about 1" long; females usually average 1 1/4" in length. The Oriental cockroach is shiny black to dark reddish brown in color. The male Oriental cockroach has wings that cover only about 75% of the abdomen. The female has no extended wings (wing pads only present at base). They are not able to fly.
Nymphs are shiny reddish brown. Egg capsules are reddish brown when deposited, then change to black, and are about 3/8" long. They contain 8 eggs per side (total 16 eggs) but capsules are not as distinctly furrowed between eggs.
The female carries the egg capsule for about 30 hours. It is then either dropped or glued to something near a warm protected food source. The female Oriental cockroach will produce about 8 egg capsules during her life. Developmental time from egg to adult takes about 575 days (males) to 600 days (females). Adult males live about 4-5 months. Females live about 1-6 months.
The oriental cockroach is often comfortable living outdoors. It may be found under debris, stones and leaf litter. It may also live in porch and wall voids. It typically enters structures through door thresholds, sliding glass doors, unscreened ventilators, or through sewers and drains. They are found indoors in damp, dark places such as basements or sewers, cellars, crawl spaces, and on upper floors near water pipes that they use for climbing.
Oriental cockroaches feed on all kinds of decaying matter, but prefer to feed on starchy foods. People dislike these insects because of their strong "roachy" odor and because they feed on filth.
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