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Jewel Weevil (Eurhinus magnificus)


Detailing the identifying qualities of the Jewel Weevil, including physical features and territorial reach.


 Updated: 6/3/2016; Authored By Staff Writer; Content ¬©www.InsectIdentification.org







  Jewel Weevil  
Picture of Jewel-Weevil
Picture of Jewel-Weevil Picture of Jewel-Weevil


The Jewel Weevil is a bright and gleaming newcomer to North America, looking like its precious namesake but with potential to become a pest.





A native to countries in Central America, the Jewel Weevil started making appearances in Florida in 2002. It was first seen in a plant nursery for ornamental plants and on a shipment of bananas the year after. Since then, the frequency of sightings and numbers increased and the species is now established in Miami-Dade and Broward counties. Their host plant is the possum grape vine (also called princess vine). It is still unknown if this insect will threaten grapevines grown in Florida for food and vine production. The Jewel Weevil has no known biological controls yet, so research is needed in both areas.

Females embed a fertilized egg into the stem of the plant and a gall will form as the plant swells around the egg. Galls are swollen, round bumps on a stem. If cut open before hatching, eggs will be visible inside the gall. Galls on this plant with this species can grow to almost a centimeter in diameter on the stem and are usually found at the softer, younger parts of a stem. The larvae molt and pupate while inside their galls and emerge as adults. Adults feed on the plant stems and petioles (the leaf 'stem' that connects it to the main plant), then repeat the reproduction cycle. This insect activity at various life stages can cause overloaded stems to break, fall off, or fail to move nutrients to the rest of the vine.









Picture of the Jewel Weevil
Picture of the Jewel Weevil


Jewel Weevil Information



Category: Beetle
Common Name: Jewel Weevil
Scientific Name: Eurhinus magnificus


Taxonomy Hierarchy



 Arrow graphic Kingdom: Animalia
  Arrow graphic Phylum: Arthropoda
   Arrow graphic Class: Insecta
    Arrow graphic Order: Coleoptera
     Arrow graphic Family: Curculionidae
      Arrow graphic Genus: Eurhinus
       Arrow graphic Species: magnificus

Size, Identifying Tags and Territorial Reach



Size (Adult, Length): Size (Adult, Length): 4 mm to 6 mm (0.156 inches to 0.234 inches)
Identifying Colors: green, red, copper, yellow, black
Additional Descriptors: rainbow, multicolored, colorful, metallic, shiny, snout, nose, trunk

North American Territorial Reach (Though Not Limited To): Florida

A Note About Territorial Reach: Keep in mind that 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 above. Insects are driven by environmental factors, food supplies and mating patterns and do not nescessarily work within hard-and-fast territorial lines like we humans do.

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