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Dart Moth (Agnorisma bolii)

Detailing the physical features, habits, territorial reach and other identifying qualities of the Dart Moth

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Image Credit: MasterQ from TN
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Rarely seen, this small Dart Moth has atypical, distinctive black markings that put it squarely in its genus.

Updated: 01/03/2022; Authored By Staff Writer; Content ©www.InsectIdentification.org
Agnorisma bolii is one of three moths in its genus that live in North America. It is a small moth, and the brown wings are common enough among moths, as are the two pale lines that cross them, dividing the wings into three bands. The middle band has special features though, adding interest that is hard to overlook. A solid black square in the center of each forewing is a curious shape. Most markings seen on moths are oval or round, but this genus has sharp, squared edges on its most prominent marking. A trio of black dots sits above this square. A light brown thorax is covered in hair and the antennae have comb-like teeth.

Of the three Agnorisma moths, this one is rarely seen. Its diminutive size and cryptic coloring help hide it among woods and plants. What its caterpillars feed on is unknown, and its preferred habitat is also a bit of a mystery. It seems that gaps in this moth's life history are to be expected when the insect itself is scarcely found.©InsectIdentification.org

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General Characteristics
Capability, Shape, Texture/Pattern, Benefits, Dangers
Flying insect icon
Hairy insect icon
Patterned insect icon
Striped or banded insect icon


Taxonomic Hierarchy
Species Breakdown
Kingdom: Animalia
  Phylum: Arthropoda
    Class: Insecta
      Order: Lepidoptera
        Family: Noctuidae
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          Genus: Agnorisma
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            Species: bolii
Identifying Information
Size, Colors, Features
Scientific Name: Agnorisma bolii
Category: Butterfly or Moth
Size (Adult; Length): 17mm to 20mm (0.66" to 0.78")
Colorwheel Graphic Colors: brown; black
Descriptors: trio black dots; three black squares; black square; brown wings; flying; black line head; furry

Relative Size Comparison
Typical Size Between 17mm (0.7in) and 20mm (0.8in)
Lo: 17mm
Md: 18.5mm
Hi: 20mm
Territorial Map*
U.S., Canada, and Mexico
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Territory map graphic of the country of Mexico
Contiguous United States shape map layer graphic
Prince Edward Is.  
* MAP NOTES: The territorial heat map above showcases (in red) the states and territories of North America where the Dart Moth may be found (but is not limited to). This sort of data is useful when attempting to see concentrations of particular species across the continent as well as revealing possible migratory patterns over a species' given lifespan. Some insects 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. States/Territories shown above are a general indicator of areas inhabited by the Dart Moth. Insects generally go where they please, typically driven by diet, environmental changes, and / or mating habits.


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