Cockroaches
WouterCockroaches are arthropods that belong to the class Insecta and phylum Arthropoda. They have two compound eyes that are made of many cells containing photoreceptor cells. They also have a heart that is funnel-shaped and consists of several chambers, called spiracles. Cockroaches are very gregarious creatures and live in warm conditions.
There are 55 species of cockroaches in the United States. They prefer warm, moist habitats. Some species are scavengers, and are found in buildings and structures. They also feed on cheese and meat products. Cockroaches can also be found in household compost piles, and are known to leave a trail of droppings.
The male cockroach has anal styles, which are two thin, paired projections from the sides of its sternum. The female cockroach does not have these projections. The female cockroach has eight ovarioles in each ovary. Cockroaches are uricotelic, meaning they excrete nitrogenous waste in the form of uric acid.
Cockroaches are found in many areas of the world. They are adapted to many environments and thrive in warm conditions. They are most active at night and will run away when exposed to light. People with cockroach allergies should consider using a preventative measure. Many people with severe cockroach allergies need to visit the hospital more often than others because of their symptoms.
