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Deer Fly (Chrysops vittatus)


Detailing the physical features, habits, territorial reach and other identifying qualities of the Deer Fly.


 Updated: 2/27/2018; Authored By Staff Writer; Content ¬©www.InsectIdentification.org



  Deer Fly  
Picture of Deer-Fly-Chrysops-Vittatus


Female Deer Flies are a biting nuisance to both people and livestock as well as any other warm-blooded animal it comes across.





Though physically smaller than the related Horse Fly, Deer Flies still pack a painful bite and their irksome presence can make it miserable to spend time outdoors. Bites are not lethal, just annoying. Welts from bites will heal on their own, but ice may help alleviate some symptoms like swelling and pain. This species is yellow-orange with three black lines on the thorax and four thinner black lines on the abdomen. Females feed on blood and are biters. Males do not drink blood and instead take nectar from flowers. Deer are the typical host for this fly, but in their absence, Deer Fly females will take a blood meal from anything or anyone.

Females lay fertilized eggs in or around water. Once hatched, larvae eat the blood meal provided by the mother as well as aquatic insects. As they grow, larvae remain near, or in, water sources like puddles, troughs, and ponds. Adults can be found anywhere, especially areas where deer are known to roam. It is difficult to move them out of areas they have established as hunting territories like certain parts of a beach or a backyard patios.
Basic Information
Common Name: Deer Fly
Scientific Name: Chrysops vittatus
Category: Fly or Mosquito


General Identification
Size (Adult; Length): 10mm to 12mm (0.39in to 0.47in)
Colorwheel Graphic
Identifying Colors: orange, black, orange, brown
Additional Descriptors: biting, bleeding, painful, large, buzz, flying




Taxonomic Hierarchy
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Diptera
Family: Tabanidae
Genus: Chrysops
Species: vittatus




Territorial Reach (A-to-Z)
Note: An insect's reach is not limited by lines drawn on a map and therefore species may appear in areas, regions and/or states beyond those listed below as they are driven by environmental factors (such as climate change), available food supplies and mating patterns. Grayed-out selections below indicate that the subject in question has not been reported in that particular territory. U.S. states and Canadian provinces / territories are clickable to their respective bug listings.
Alabama
Alaska
Arizona
Arkansas
California
Colorado
Connecticut
Delware
Florida
Georgia
Hawaii
Idaho
Illinois
Indiana
Iowa
Kansas
Kentucky
Louisiana
Maine
Maryland
Massachusetts
Michigan
Minnesota
Mississippi
Missouri
Montana
Nebraska
Nevada
New Hampshire
New Jersey
New Mexico
New York
North Carolina
North Dakota
Ohio
Oklahoma
Oregon
Pennsylvania
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Utah
Vermont
Virginia
Washington
West Virginia
Wisconsin
Wyoming
Canadian National Flag Graphic
Alberta
British Columbia
Manitoba
New Brunswick
Newfoundland and Labrador
Nova Scotia
Ontario
Prince Edward Island
Quebec
Saskatchewan
Mexican National Flag Graphic
Mexico


Territorial Area Map (Visual Reference Guide)
The map below showcases (in red) the states and territories of North America where the Deer Fly may be found (but is not limited to). This sort of data can be useful in seeing concentrations of a particular species over the continent as well as revealing possible migratory patterns over a species' given lifespan. Some species are naturally confined by environment, weather, mating habits, food resources and the like while others see widespread expansion across most, or all, of North America.
Alaska  
Hawaii  
Prince Edward Is.  
State of Alabama graphic
State of Arizona graphic
State of Arkansas graphic
State of California graphic
State of Colorado graphic
State of Delware graphic
State of Florida graphic
State of Georgia graphic
State of Idaho graphic
State of Illinois graphic
State of Indiana graphic
State of Iowa graphic
State of Kansas graphic
State of Kentucky graphic
State of Louisiana graphic
State of Maine graphic
State of Maryland graphic
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State of Minnesota graphic
State of Mississippi graphic
State of Missouri graphic
State of Montana graphic
State of Nebraska graphic
State of Nevada graphic
State of New England graphic
State of New Jersey graphic
State of New Mexico graphic
State of New York graphic
State of North Carolina graphic
State of North Dakota graphic
State of Ohio graphic
State of Oklahoma graphic
State of Oregon graphic
State of Pennsylvania graphic
State of South Carolina graphic
State of South Dakota graphic
State of Tennessee graphic
State of Texas graphic
State of Utah graphic
State of Virginia graphic
State of Washington graphic
State of West Virginia graphic
State of Wisconsin graphic
State of Wyoming graphic
Canadian territory of Alberta graphic
Canadian territory of British Columbia graphic
Canadian territory of Manitoba graphic
Canadian territory of New Brunswick graphic
Canadian territory of Newfoundland and Labrador graphic
Canadian territory of Ontario graphic
Canadian territory of Quebec graphic
Canadian territory of Saskatchewan graphic
Territory map graphic of the country of Mexico
Contiguous United States shape map layer graphic


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