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Yellow-fringed Dolichomia (Hypsopygia olinalis)

Detailing the physical features, habits, territorial reach and other identifying qualities of the Yellow-fringed Dolichomia

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A deep pink line above yellow fringe makes this moth easier to distinguish from look-a-likes.

Updated: 07/15/2021; Authored By Staff Writer; Content ©www.InsectIdentification.org
Yellow-fringed Dolichomia is a purple moth with two yellow, triangular marks on the outer edge of each forewing. A thin yellow line running across the wings connects the left and right marks at the base of the triangle. There are a couple of other moths with similar markings and coloration, but this species also has a dark pink-purple line along the bottom edges of the wings. A hairy, yellow fringe extends beyond it. It looks a lot like the Pink-fringed Dolichomia and the Clover Hayworm Moth.

The caterpillars of the Yellow-fringed Dolichomia feed on oak leaves. Adults are drawn to lights, and are most active from spring through autumn, though they extend activity in warmer southern states.

General Characteristics
Capability, Shape, Texture/Pattern, Benefits, Dangers
Flying insect icon


Taxonomic Hierarchy
Species Breakdown
Kingdom: Animalia
  Phylum: Arthropoda
    Class: Insecta
      Order: Lepidoptera
        Family: Pyralidae
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          Genus: Hypsopygia
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            Species: olinalis
Identifying Information
Size, Colors, Features
Scientific Name: Hypsopygia olinalis
Category: Butterfly or Moth
Size (Adult; Length): 10mm to 10mm (0.39" to 0.39")
Colorwheel Graphic Colors: purple; yellow
Descriptors: dark pink border; yellow triangles; flying

Relative Size Comparison
Typical Size Between 10mm (0.4in) and 10mm (0.4in)
Lo: 10mm
Md: 10mm
Hi: 10mm
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 Yellow-fringed Dolichomia 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 Yellow-fringed Dolichomia. Insects generally go where they please, typically driven by diet, environmental changes, and / or mating habits.


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