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The Common Cockroach (Blatta orientalis) is a large species of cockroach, measuring about 1 in (2.5 cm) in length at maturity. It is dark brown to black in colour and has a glossy body. The female Common cockroach has a somewhat different appearance to the male, appearing to be wingless at casual glance but has two very short and useless wings just below her head. She has a wider body than the male. The male has long wings, which cover a majority of his body and are brown in colour, and has a more narrow body. The odd male is capable of very short flights, ranging about 2 to 3 meters. The female Common cockroach looks somewhat similar to the Florida woods cockroach, and may be mistaken for it.

HabitatEdit

The Common cockroach tends to travel somewhat more slowly than other species. They are often called "waterbugs" since they prefer dark, moist places. They can often be found around decaying organic matter, and in sewers, drains, damp basements, porches, and other damp locations. They can be found outside in bushes, under leaf groundcover, under mulch, and around other damp places outdoors. They are major household pests in parts of the northwest, mid-west, and southern United States.

AdaptationEdit

In order to thrive, cockroaches need a place to hide. They prefer warm places and a relatively high humidity if possible; they also need a source of food/liquid. The optimum temperature for Common cockroaches is between 20 °C (68 °F) to 29 °C (84 °F). Female Common cockroaches have vestigial tegmina (reduced forewings) and males have longer tegmina. Cockroaches are mainly nocturnal. Common cockroaches can be elusive in that a casual inspection of an infested dwelling during the day may show no signs of roach activity.

DistinctionEdit

Signs of cockroaches are their oothecae, which are “egg cases” containing up to 16 individual eggs in the case of Common cockroaches. These oothecae are dropped by females and hatch on their own in about two months. Common cockroaches can be harder to get rid of than other roaches. Although adults can be fairly easily killed by the application of residual insecticide, the insecticides can get washed away, and two months later females can hatch new nymphs.

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