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Flower Longhorn Beetle (Strangalia luteicornis)

Detailing the physical features, habits, territorial reach and other identifying qualities of the Flower Longhorn Beetle

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Image Credit: Tammy C. from NH
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Flower Longhorn Beetles from the genus Strangalia have tapered bodies and are frequently found walking among the petals of flowers.

Updated: 03/23/2021; Authored By Staff Writer; Content ©www.InsectIdentification.org
Strangalia luteicornis, like its cousins, has broad 'shoulders' and an abdomen that gets narrower, or strangled, down the length of the abdomen. Large black and yellow spots on the elytra (wing covering) connect, forming bands across the body. The pronotum is orange with two black stripes running from head to abdomen. This species of Flower Longhorn Beetle visits flowers as an adult to drink nectar from the blossoms. It is also an accidental pollinator, which benefits gardens and meadows. Its larvae, however, bore into tree trunks, which can hinder the tree's ability to move water and nutrients over time.

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: Coleoptera
        Family: Cerambycidae
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          Genus: Strangalia
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            Species: luteicornis
Identifying Information
Size, Colors, Features
Scientific Name: Strangalia luteicornis
Category: Beetle
Size (Adult; Length): 9mm to 12mm (0.35" to 0.47")
Colorwheel Graphic Colors: yellow, black, orange
Descriptors: banded, striped, dot, flying, flower

Relative Size Comparison
Typical Size Between 9mm (0.4in) and 12mm (0.5in)
Lo: 9mm
Md: 10.5mm
Hi: 12mm
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 Flower Longhorn 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 Flower Longhorn Beetle. Insects generally go where they please, typically driven by diet, environmental changes, and / or mating habits.


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