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Hydriomena Moth (Hydriomena spp.)

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

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The members of the genus Hydriomena are hard to tell apart, but hints of green and gray are common in many of them.

Updated: 07/06/2021; Authored By Staff Writer; Content ©www.InsectIdentification.org
The woodsy moths of Hydriomena are very good at blending into the trees that they sit on. Wings are typically held open flat, giving such a low profile that the presence of the moth is difficult to detect. The mottled patterns of gray, brown, and green on the wings of many species perfectly mimic the lichen-covered tree bark found in every forest. Most have a swath of light coloring across the middle or lower part of the forewings. Moths in this group are also called Highfliers.

Look for moths in the genus Hydriomena along the edges of evergreen woods and forests. Some species are tree specific when it comes to choosing a host plant for their offspring; others are more varied and may choose deciduous trees. Aspen, alder, fir, spruce, pine, and tamarack are used by members of this genus. Hiking around areas with lots of trees in the spring and summer is a good way to try and spot them if one is up for the challenge.

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


Taxonomic Hierarchy
Species Breakdown
Kingdom: Animalia
  Phylum: Arthropoda
    Class: Insecta
      Order: Lepidoptera
        Family: Geometridae
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          Genus: Hydriomena
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            Species: spp.
Identifying Information
Size, Colors, Features
Scientific Name: Hydriomena spp.
Other Name(s): Highflier
Category: Butterfly or Moth
Size (Adult; Length): 24mm to 33mm (0.94" to 1.29")
Colorwheel Graphic Colors: gray, green, white, black, brown
Descriptors: green spots, gray, flying, woods, light band, silvery

Relative Size Comparison
Typical Size Between 24mm (0.9in) and 33mm (1.3in)
Lo: 24mm
Md: 28.5mm
Hi: 33mm
Territorial Map*
U.S., Canada, and Mexico
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Prince Edward Is.  
* MAP NOTES: The territorial heat map above showcases (in red) the states and territories of North America where the Hydriomena 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 Hydriomena Moth. Insects generally go where they please, typically driven by diet, environmental changes, and / or mating habits.


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