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Black Vine Weevil (Otiorrhynchus sulcatus)


Detailing the physical features, habits, territorial reach and other identifying qualities of the Black Vine Weevil



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The evasive Black Vine Weevil can and will eat most any plant, which can decimate production in a wholesale greenhouse or nursery.



Updated: 01/26/2021; Authored By Staff Writer; Content ©www.InsectIdentification.org
Weevils are a type of beetle and this particular weevil is a member of the family Curculionidae, the largest family of insects known to date. The Black Vine Weevil actually hails from Europe, and is believed to have made its way to North America sometime in the mid-to-late 19 century. The 'nose' of the weevil is called a snout and it curves downward in front of the face, somewhat like an anteater. They are small beetles and nocturnal feeders, making it difficult at first to identify them as culprits in a plant's destruction. This species is black and covered in fine hairs. The body has ridges and appears bumpy. Females bore holes into stems or seeds and lay eggs in the summer. One female can lay hundreds of eggs so infestations can come about rapidly. Grubs (offspring) live underground until maturity.

The Black Vine Weevil is the known pest of an expansive variety of plants and it usually feeds at night. Leaves are chewed away, leaving gardeners and farmers to wonder what happened the next morning. Infestations are more common in large-scale perennial plant growing facilities than small backyard gardens. Occasionally home gardeners may find weevil grubs in purchased container plants. Adult Black Vine Weevils seem to prefer eating rhododendrons and yews, but have no problem eating their way through any myriad of plants that are in front of them. Their grubs will also destroy plants from underground as they eat away at roots and stems until the plant dies.




General Characteristics
Capability, Shape, Texture/Pattern, Benefits, Dangers
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Harmful insect icon
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Taxonomic Hierarchy
Species Breakdown
Kingdom: Animalia
  Phylum: Arthropoda
    Class: Insecta
      Order: Coleoptera
        Family: Curculionidae
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          Genus: Otiorrhynchus
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            Species: sulcatus
Identifying Information
Size, Colors, Features
Scientific Name: Otiorrhynchus sulcatus
Category: Beetle
Size (Adult; Length): 3mm to 7mm (0.11" to 0.27")
Colorwheel Graphic Colors: black, red
Descriptors: snout, beak, curve, trunk, elephant, anteater, harmful, pest, garden pest
Relative Size Comparison
Typical Size Between 3mm (0.1in) and 7mm (0.3in)
Lo: 3mm
Md: 5mm
Hi: 7mm
Territorial Map*
U.S., Canada, and Mexico
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Alaska  
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* MAP NOTES: The territorial heat map above showcases (in red) the states and territories of North America where the Black Vine 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 Black Vine Weevil. Insects generally go where they please, typically driven by diet, environmental changes, and / or mating habits.

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