However, these are not always effective against all biting fly varieties. Wear insect repellants, such as those that contain DEET or picaridin.Ideally, these would be light colored, as dark colored clothing may attract flies. Cover their skin by wearing a long sleeved shirt, pants, and a hat.In addition to these preventive steps, a person can also: Keeping the yard neat and well trimmed can also help minimize the amount of flies in the area. Examples include marshlands, forests, shady areas, or locations that have very dense plant life. When possible, a person should avoid spending time in areas where biting flies are common. Share on Pinterest A hat with protective netting can help keep flies away from a person’s head. Doctors do not think they can transmit diseases. Stable flies tend to bite people’s ankles. They usually appear in the late summer to fall, and they typically bite in the morning or late afternoon. They have several stripes on their bodies. Although most do not transmit disease, there is a subset of sand flies in Texas that can transmit a severe condition called cutaneous leishmaniasis. These tiny, worm-like flies are small and usually brown to gray. Their bites do not transmit diseases but can be painful due to how they bite the skin. They usually live near water or other warm, wet locations. They may have green heads or be completely black. They have dark bands on their wings and are predominantly either yellow-black or brown.ĭeer flies can transmit a disease called tularemia, or rabbit fever, to humans. These medium sized flies normally appear in the spring and are usually the size of a housefly. They will usually bite the skin on a person’s head. They do not transmit diseases to humans, but they can cause severe allergic reactions in humans and livestock.Įxamples of reactions include swelling, bleeding, and itching. Some people may also call them buffalo gnats. Black fliesīlack flies are very small flies that have a humpbacked appearance. They do not transmit disease but can cause small, itchy bites. People may also call them no-see-ums, punkies, or gnats. These six biting flies are: Biting midgesīiting midges are very small flies, usually no larger than 1/32 of an inch. Most of the flies in this article do not cause harm other than the bite itself, though some can transmit disease or cause severe allergic reactions. Some of these flies may have variations that are similar in appearance yet do not bite. Accessed October 20, 2016.There are six major types of biting fly in the United States. " Piebaldism." Genetics Home Reference: Your Guide to Understanding Genetic Conditions. " Re: Why Don't Humans Have Spotted or Striped Skin Color?" MadSci Network: General Biology. There are some people with vitiligo and piebaldism, who can appear to have spots, but they are a very low segment of the world's overall population.Ĭarlson, Christopher. However, it's likely that our overall skin color probably is a result of adaptation as well. Those animals with stripes were more likely to survive, and to pass along the genes that produce stripes to their offspring.įor humans, this apparently wasn't the case. For certain species, like zebras, stripes provided an evolutionary advantage because they worked as camouflage. If the melanocytes that produce dark pigments and light pigments migrate in streaks, you end up with stripes. From there, these cells migrate through the developing skin towards the belly of the animal. In the embryos of mammals, the melanocytes originate from the same group of cells that produces the spinal cord and the brain. The skin cells that produce melanin are known as melanocytes. Together, these two pigments account for just about every color you might see on the skin of mammals: white, red, yellow, brown, and black and every shade in between. Humans and animals get their skin color from melanin pigments, which can be either black or yellow. Have you ever wondered why we humans don't have spots or stripes? It feels strange that we don't, especially compared to the many striped, spotted, and multicolored animals around us.
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