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Western Grapeleaf Skeletonizer Moth (Harrisina metallica)


Detailing the physical features, habits, territorial reach and other identifying qualities of the Western Grapeleaf Skeletonizer Moth.


 Updated: 2/3/2017; Authored By Staff Writer; Content ¬©www.InsectIdentification.org



  Western Grapeleaf Skeletonizer Moth  
Picture of Western-Grapeleaf-Skeletonizer-Moth
Picture of Western-Grapeleaf-Skeletonizer-Moth Picture of Western-Grapeleaf-Skeletonizer-MothPicture of Western-Grapeleaf-Skeletonizer-Moth


Though the adult Western Grapeleaf Skeletonizer Moth does not bite or sting, its caterpillar does both, hurting leaves and people.





Black, shiny wings and a bright yellow or orange face might have an observer thinking it is a fly or bee, but the Western Grapeleaf Skeletonizer Moth is neither. That said, it is still quite a nuisance in its own ways.

Lemony colored eggs are laid in groups of 10 to 100 on the bottom of grape leaves. They hatch in about 7 days. Caterpillars are yellow and tubular. It may have a blue ring near its head and another near its rear. Its 10 yellow bands of color are broken by 11 black hairy rings that can cause painful stings to humans. The spines can cause an allergic reaction that may require medical attention. They have voracious appetites and devour the fleshy green parts of leaves of grapevines causing the plant harm as well as its fruit production. All that remains of the leaf are its veins, still in leaf shape, giving it a skeleton-type appearance. Look for them, with gloved hands and long sleeves, under grape leaves. They chew through them from the bottom. They are a major pest to California grape-growing and wine producing industries. To further aggravate the situation, many generations can be produced in one year making it possible to see a vineyard decimated by the caterpillars in one growing season. They pupate after 40 days of feasting and emerge two weeks later as winged adults, ready and able to reproduce.

A variety of methods are used to control the larvae of the Western Grapeleaf Skeletonizer Moth: introduction of granulosis virus and species-specific parasites, use of insecticide spray, keeping leaf litter and debris away from plant bases, and removing infested leaves.
Basic Information
Common Name: Western Grapeleaf Skeletonizer Moth
Scientific Name: Harrisina metallica
Category: Butterfly or Moth


General Identification
Size (Adult; Length): 22mm to 30mm (0.86in to 1.17in)
Colorwheel Graphic
Identifying Colors: black
Additional Descriptors: shiny, barbed, flare, tail




Taxonomic Hierarchy
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Zygaenidae
Genus: Harrisina
Species: metallica


Butterfly and Moth Anatomy
Graphic showing basic anatomy of a common North American butterfly and moth insect
1
Antennae: Butterflies and Moths have a pair of antennae on the head used as sensors.
2
Head: The head is home to the insect's eyes, antennae, and proboscis.
3
Thorax: Home to the three pairs of legs as well as vital internal organs.
4
Abdomen: Contains vital internal organs such as the heart(s) and reproduction facilities.
5
Forewing: The upper, forward wing pair used for flying.
6
Hindwing: The lower, rearward wing pair used for flying.
NOTE: Butterflies and Moths are part of the Lepidopteran order as they share many similarities.


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 Western Grapeleaf Skeletonizer Moth 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
State of Iowa graphic
State of Kansas graphic
State of Kentucky graphic
State of Louisiana graphic
State of Maine graphic
State of Maryland graphic
State of Michigan graphic
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
State of West Virginia graphic
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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