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Ivory Marked Beetle (Eburia quadrigeminata)


Detailing the physical features, habits, territorial reach and other identifying qualities of the Ivory Marked Beetle



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Image Credit: Paul T., Tulsa, OK
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Larvae of the Ivory Marked Beetle bore deep into trees, possibly emerging years later from furniture made in the interim.



Updated: 08/23/2019; Authored By Staff Writer; Content ©www.InsectIdentification.org
The defining ivory dashes on the top of this beetle come in pairs. They are usually found in forests or lumberyards where the orange-brown adults eat leaves and twigs. They are small and most active in the summer when they are seen flying around on hot days.

Females lay one egg at a time in fissures or cracks in tree bark. Larval development can take years. After hatching, they bore deep into tough, central heartwood of a tree, destroying it from the inside. Trees such as oak, maple, hickory and ash are popular hosts for larval infestation.

Because they can compromise the integrity of the wood as they tunnel through it, Ivory Marked Beetles may become a nuisance to the lumber industry.
Sometimes wood gets harvested, and the small grubs escape detection and find themselves part of a table, floor, or sofa frame. Adult beetles can emerge from finished woodwork years after it was built or installed. Sometimes the wood they bore into is destined to become firewood so adults have been found inside homes by customers who buy seasoned wood fuel.




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




Taxonomic Hierarchy
Species Breakdown
Kingdom: Animalia
  Phylum: Arthropoda
    Class: Insecta
      Order: Coleoptera
        Family: Cerambycidae
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          Genus: Eburia
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            Species: quadrigeminata
Identifying Information
Size, Colors, Features
Scientific Name: Eburia quadrigeminata
Category: Beetle
Size (Adult; Length): 13mm to 25mm (0.51" to 0.98")
Colorwheel Graphic Colors: brown; ivory; white; yellow; black
Descriptors: spot, flying
Relative Size Comparison
Typical Range Between 13mm and 25mm
Lo: 13mm
Md: 19mm
Hi: 25mm
Territorial Map*
U.S., Canada, and Mexico
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Territory map graphic of the country of Mexico
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Alaska  
Hawaii  
Prince Edward Is.  
* MAP NOTES: The territorial heat map above showcases (in red) the states and territories of North America where the Ivory Marked 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 Ivory Marked Beetle. Insects generally go where they please, typically driven by diet, environmental changes, and / or mating habits.

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