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Net-winged Beetle (Calopteron terminale)

Detailing the physical features, habits, territorial reach and other identifying qualities of the Net-winged Beetle

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Image Credit: Jane B from MN
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The orange and black Net-winged Beetle has fine texture on its soft wing covers, something not seen on many beetles.

Updated: 01/04/2022; Authored By Staff Writer; Content ©www.InsectIdentification.org
This beetle resembles a firefly, like its close cousin C. reticulatum, but the ridges and net-like pattern of veins on this species' wings place them in the Lycidae family. They do not glow. The elytra (wing coverings) are mostly orange with a thick black band covering the lower part. Many similar sized orange and black insects taste bad, so this coloring is a passive defense in itself, but when threatened, adults open and lift their wings as a defensive warning, perhaps making themselves appear larger and more aggressive. This Net-winged Beetle does not have a stinger, and does not fight, so this display may not always be effective in scaring off a predator.

Larvae hunt for small invertebrates and perhaps even fungi in leaf litter or decaying wood on the forest floor. Adults are usually seen at sundown either resting on flowers and other vegetation, or in the air, moving between stops. They are slow in flight.

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


Taxonomic Hierarchy
Species Breakdown
Kingdom: Animalia
  Phylum: Arthropoda
    Class: Insecta
      Order: Coleoptera
        Family: Lycidae
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          Genus: Calopteron
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            Species: terminale
Identifying Information
Size, Colors, Features
Scientific Name: Calopteron terminale
Category: Beetle
Size (Adult; Length): 9mm to 18mm (0.35" to 0.70")
Colorwheel Graphic Colors: orange; black
Descriptors: bumpy; firefly; slow; flying

Relative Size Comparison
Typical Size Between 9mm (0.4in) and 18mm (0.7in)
Lo: 9mm
Md: 13.5mm
Hi: 18mm
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 Net-winged Beetle 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 Net-winged Beetle. Insects generally go where they please, typically driven by diet, environmental changes, and / or mating habits.


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