Earwigs reside in dark moist cracks beneath stones, wood and debris. This small, wingless insect was responsible for transmission of the devastating bubonic plague of the Middle Ages. They're found throughout the world, with the cat flea being the biggest concern for humans and pets. The body is covered with spines that project backward and they have several segments and three pairs of legs, which contributes to the flea's excellent jumping ability. The typical house fly is gray with thin, transparent wings.
Females are usually larger than males.
Sex can be determined by examining the space between the eyes. Female spacing is almost twice as broad as a male's. In the larvae or maggot stage, flies resemble greasy white worms. House flies are attracted to a variety of warm, moist substances from animal feces to human food and garbage. Mosquito Throughout their development, mosquitoes undergo complete metamorphosis via four stages, egg, larvae, pupa and adult.