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Banded Alder Borer Beetle (Rosalia funebris)


Detailing the physical features, habits, territorial reach and other identifying qualities of the Banded Alder Borer Beetle.


 Updated: 3/15/2018; Authored By Staff Writer; Content ¬©www.InsectIdentification.org



  Banded Alder Borer Beetle  
Picture of Banded-Alder-Borer-Beetle
Picture of Banded-Alder-Borer-Beetle Picture of Banded-Alder-Borer-BeetlePicture of Banded-Alder-Borer-BeetlePicture of Banded-Alder-Borer-Beetle


The larvae of the black-and-white Banded Alder Borer Beetles enjoys digging into the heartwood of more than just alder trees.





The Banded Alder Borer Beetle is a member of the Longhorn Beetle family Cerambycidae. Their antennae are quite long, sometimes three times longer than the body of the beetle. These data-detecting body parts make large sweeps back and forth, both behind and in front of the insect, collecting environmental information. There are over 1,200 species of Longhorn Beetle on the continent.

The head of the Banded Alder Borer is black, but its prothorax ('shoulder' area) is white with a black spot in the center of it. The elytra (wing covering) has thick, alternating bands of black and white along the rest of the body. The antennae of this species are also banded in black and white.

Though they are visually easy to recognize, more research can be done to learn about the life cycle of this beetle. Oddly, adult beetles are attracted to the smell of drying paint. It is believed that the odor the paint emits might be similar to pheromones that the beetles make themselves, and they are drawn to the paint unintentionally. Another suggestion is that the paint mimics the smell of dying trees, which this beetle species finds attractive.

Adults are active in the day and can be found in large numbers on the trunks and branches of trees. Different populations seem to prefer a particular type of tree based on their geographical position. In the Southwest, they cluster on alder trees, their namesake, but in the Rocky Mountains, they are seen on willows and in the Pacific Northwest, they are common on ash trees. Whichever area they are in, adults all seem to deposit their eggs on the outside of the bark of a distressed or fallen tree. The tiny larvae hatch and then bore into dead tree trunk. This beetle may be a bit of a nuisance to the logging industry. Freshly chopped-down trees are potential landing sites for eggs deposits, and once the larvae bore into the inner trunk, the tunneled wood may become less attractive and useful.
Basic Information
Common Name: Banded Alder Borer Beetle
Other Name(s): California Laurel Borer
Scientific Name: Rosalia funebris
Category: Beetle


General Identification
Size (Adult; Length): 23mm to 40mm (0.90in to 1.56in)
Colorwheel Graphic
Identifying Colors: black; white; gray
Additional Descriptors: banded, antennae, spot, flying




Taxonomic Hierarchy
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Family: Cerambycidae
Genus: Rosalia
Species: funebris


Beetle Anatomy
Graphic showing basic anatomy of a common North American Beetle insect
1
Antennae: Beetles have a pair of antennae on the head used as sensors.
2
Head: The head is home to the insect's eyes, antennae, and mandibles (jaws).
3
Thorax: Holds the three pairs of legs as well as vital internal organs.
4
Elytron: One of two wing cases on a Beetle that protects its wings (plural: elytra).
5
Wings: Appendages used for flying and kept under the elytra until needed.
6
Abdomen: Houses organs related to circulation, reproduction, and excretion.
7
Legs: Beetles have three pairs of legs located at the thorax, numbering six legs in all.


Territorial Reach (A-to-Z)
Note: An insect's reach is not limited by lines drawn on a map and therefore species may appear in areas, regions and/or states beyond those listed below as they are driven by environmental factors (such as climate change), available food supplies and mating patterns. Grayed-out selections below indicate that the subject in question has not been reported in that particular territory. U.S. states and Canadian provinces / territories are clickable to their respective bug listings.
Alabama
Alaska
Arizona
Arkansas
California
Colorado
Connecticut
Delware
Florida
Georgia
Hawaii
Idaho
Illinois
Indiana
Iowa
Kansas
Kentucky
Louisiana
Maine
Maryland
Massachusetts
Michigan
Minnesota
Mississippi
Missouri
Montana
Nebraska
Nevada
New Hampshire
New Jersey
New Mexico
New York
North Carolina
North Dakota
Ohio
Oklahoma
Oregon
Pennsylvania
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Utah
Vermont
Virginia
Washington
West Virginia
Wisconsin
Wyoming
Canadian National Flag Graphic
Alberta
British Columbia
Manitoba
New Brunswick
Newfoundland and Labrador
Nova Scotia
Ontario
Prince Edward Island
Quebec
Saskatchewan
Mexican National Flag Graphic
Mexico


Territorial Area Map (Visual Reference Guide)
The map below showcases (in red) the states and territories of North America where the Banded Alder Borer Beetle may be found (but is not limited to). This sort of data can be useful in seeing concentrations of a particular species over the continent as well as revealing possible migratory patterns over a species' given lifespan. Some species 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.
Alaska  
Hawaii  
Prince Edward Is.  
State of Alabama graphic
State of Arizona graphic
State of Arkansas graphic
State of California graphic
State of Colorado graphic
State of Delware graphic
State of Florida graphic
State of Georgia graphic
State of Idaho graphic
State of Illinois graphic
State of Indiana graphic
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State of Kansas graphic
State of Kentucky graphic
State of Louisiana graphic
State of Maine graphic
State of Maryland graphic
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State of Minnesota graphic
State of Mississippi graphic
State of Missouri graphic
State of Montana graphic
State of Nebraska graphic
State of Nevada graphic
State of New England graphic
State of New Jersey graphic
State of New Mexico graphic
State of New York graphic
State of North Carolina graphic
State of North Dakota graphic
State of Ohio graphic
State of Oklahoma graphic
State of Oregon graphic
State of Pennsylvania graphic
State of South Carolina graphic
State of South Dakota graphic
State of Tennessee graphic
State of Texas graphic
State of Utah graphic
State of Virginia graphic
State of Washington graphic
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State of Wisconsin graphic
State of Wyoming graphic
Canadian territory of Alberta graphic
Canadian territory of British Columbia graphic
Canadian territory of Manitoba graphic
Canadian territory of New Brunswick graphic
Canadian territory of Newfoundland and Labrador graphic
Canadian territory of Ontario graphic
Canadian territory of Quebec graphic
Canadian territory of Saskatchewan graphic
Territory map graphic of the country of Mexico
Contiguous United States shape map layer graphic


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