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Pale Green Weevil (Polydrusus impressifrons)

Detailing the physical features, habits, territorial reach and other identifying qualities of the Pale Green Weevil

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Image Credit: Troy D. taken in ME
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Image Credit: Nathan L. from West Warwick, RI
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The light green body of the Pale Green Weevil helps hide it while it feasts for a short time on the leaves of various hardwood trees.

Updated: 07/07/2021; Authored By Staff Writer; Content ©www.InsectIdentification.org
The Pale Green Weevil is also known as the Leaf Weevil, a name more descriptive of its diet than its appearance. Pale Green Weevils are a bright green color with linear ridges on the elytra (wing coverings). Their green heads are marked with large black eyes and a small black line by the base of each bent antennae. The face is slightly flattened and long. They take flight when approached.

This species is not native to North America and was transported from Europe in the early 1900's. The first documented sighting of them on this continent was in New York in 1906. The adults chew on the leaves of birch, maple, willow, and poplar trees as well as orchard trees like apple, pear, cherry, peach, and plum. Feeding only lasts a few weeks in the spring and early summer, so their impact on tree health is usually insignificant. They leave jagged edges on the leaves they have chewed, and are only a threat to the health of very young trees that do not have an abundance of branches and leaves yet. Orchards might have an annual inspection for this weevil in areas where new saplings are growing. Mature trees recover from any leaf loss by simply generating more leaves.

Pale Green Weevil caterpillars are found in the soil at the base of host trees where they chew at the small roots emerging from the trunk at the soil line. Their feeding activity there is also considered insignificant unless the tree is young.©InsectIdentification.org

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General Characteristics

Capability, Shape, Texture/Pattern, Benefits, Dangers
Flying insect icon
Garden pest insect icon
Pest insect icon

Taxonomic Hierarchy

Species Breakdown
Kingdom: Animalia
  Phylum: Arthropoda
    Class: Insecta
      Order: Coleoptera
        Family: Curculionidae
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          Genus: Polydrusus
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            Species: impressifrons

Identifying Information

Size, Colors, Features
Scientific Name: Polydrusus impressifrons
Other Name(s): Leaf Weevil
Category: Beetle
Size (Adult; Length): 5mm to 7mm (0.19" to 0.27")
Colorwheel Graphic Colors: green
Descriptors: green, bright, flying, wings, pest, garden pest

Relative Size Comparison

Typical Size Between 5mm (0.2in) and 7mm (0.3in)
Lo: 5mm
Md: 6mm
Hi: 7mm

Territorial Map*

U.S., Canada, and Mexico
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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 Pale Green Weevil 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 Pale Green Weevil. Insects generally go where they please, typically driven by diet, environmental changes, and / or mating habits.
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