Class: Insecta, Order: Diptera Flies are insects that have one set of wings in the adult stage. They grow through the process of complete metamorphosis with life stage of egg, larva, pupa and adult. The larval stages are commonly called "maggots". Flies are worldwide in distribution and there are estimated to be over 240,000 different species. Only about half this number have been identified and described. The order Diptera includes insects such as house flies, mosquitoes, gnats, midges, bottle and blow flies. Flies, especially mosquitoes are vectors for some diseases in humans such as dengue, malaria, yellow fever, encephalitis and other infectious diseases. Others are known to spread food-borne illnesses such as salmonella. Click here for a FREE fly control consultation or call 1-855-PEACHTREE (732-2487).