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Army Cutworm Moth (Euxoa auxiliaris)


Detailing the physical features, habits, territorial reach and other identifying qualities of the Army Cutworm Moth.




A common pest of turf grass, the Army Cutworm is a nuisance in the plains and western parts of the continent.



 Updated: 5/26/2020; Authored By Staff Writer; Content ¬©www.InsectIdentification.org


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Army Cutworm Moth Video(s)



Description: A slow-moving Army Cutworm, taking breaks while digging.
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Grasses of all kinds, including crops like young wheat, are a favorite food for the caterpillar of the Army Cutworm Moth. Known simply as the Army Cutworm, the grayish-brown, worm-like larva chew down blades of cut and even cuts out 'window panes' while feeding. The result is a bedraggled appearance to the plant and is a nuisance to those growing crops. The caterpillars are plump and have pairs of small black dots along a wide, lighter 'back' stripe. Long, thin stripes form as the caterpillar matures.

The adult moth is also called a Miller Moth because its dusty appearance was thought to look like flour in a mill. The light brown moth cannot tolerate cold winters in the northern part of its range, so each summer, it flies north and even upward into the mountains to feed on wildflowers there. Eggs are laid back in the warmer south. Hatched larvae travel at night just under the soil surface to new patches of food when an area is completely consumed. Farmers scout their fields to keep abreast of any cutworm damage in the event it is severe and requiring management/control.
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General Characteristics
Capability, Shape, Texture/Pattern, Benefits, Dangers
Flying insect icon
Patterned insect icon
Pest insect icon
Rounded insect body icon


Taxonomic Hierarchy
Species Breakdown
Kingdom: Animalia
  Phylum: Arthropoda
    Class: Insecta
      Order: Lepidoptera
        Family: Noctuidae [ View More ]
          Genus: Euxoa [ View More ]
            Species: auxiliaris
Identifying Information
Size, Colors, Descriptors
Scientific Name: Euxoa auxiliaris
Other Name(s): Miller Moth
Category: Butterfly or Moth
Size (Adult; Length): 17mm to 22mm (0.66in to 0.86in)
Colorwheel Graphic Colors: brown; tan
Descriptors: tan edges; reniform spots; tooth border; round spots; flying; pest
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Relative Size Comparison
Lo: 17mm | Hi: 22mm
Territorial Reach (A-to-Z)
U.S., Canada, and Mexico
Alabama
Alaska
Arizona
Arkansas
California
Colorado
Connecticut
Delaware
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
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 above as they are driven by environmental factors (such as climate change), available food supplies and mating patterns.
Territorial Map
U.S., Canada, and Mexico
Alaska  
Hawaii  
Prince Edward Is.  
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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


Butterfly and Moth Anatomy
Graphic showing basic anatomy of a common North American butterfly and moth insect
1
Antennae: Butterflies and Moths have a pair of antennae on the head used for sensing.
2
Head: The head is home to the insect's eyes, antennae, and proboscis.
3
Thorax: Home to the three pairs of legs as well as vital internal organs.
4
Abdomen: Contains vital internal organs such as the heart(s) and reproduction facilities.
5
Forewing: The upper, forward wing pair used for flying.
6
Hindwing: The lower, rearward wing pair used for flying.
NOTE: Butterflies and Moths are part of the Lepidopteran order as they share many similarities.