Depending on the particular species, adult cockroaches measure between 1 and 5 centimetres in length and range in colour from black to reddish-brown. Most species of cockroaches in Canada have wings but are not capable of sustained, powered flight. Some species may use their wings to glide for short distances. Each cockroach has pair of long antennae and six legs, which are typically long and spiny. The body is flattened back to front and oval-shaped, as a result, they are perfectly equipped for hiding in small cracks or crevices that touch both the topside and the underside of the body. Immature cockroaches, known as nymphs, look like smaller wingless versions of fully grown adults. Types of Cockroaches in Canada Although roughly 4,500 different cockroach species exist worldwide, less than 1% of them are regarded as pests which regularly invade homes and other buildings. Cockroaches in Canada frequently enter heated structures to escape the colder weather, as the tropical natives prefer warmer environments. The German cockroach is the species most often found throughout Canada and the rest of North America. Other structure-infesting cockroach species commonly encountered in Canada include the American cockroach, oriental cockroach, brown-banded cockroach, and wood cockroaches.