thistle crown weevil (Trichosirocalus horridus ) on slenderflower thistle (Carduus tenuiflorus )

thistle crown weevil
Trichosirocalus horridus (Panzer, 1801)

Host: slenderflower thistle (Carduus tenuiflorus W. Curtis)
Descriptor: Damage
Description: attack site of crown weevil, bud is destroyed (dead tissue in center). Plants can produce secondary stems afterwards, but flowering is delayed.
Image type: Field
Image location: Oregon, United States

Photographer Information

Name: Eric Coombs
Organization: Oregon Department of Agriculture
Country: United States

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Subject: thistle crown weevil
Genus: Trichosirocalus
Family: Curculionidae
Order: Coleoptera
Class: Hexapoda (including Insecta)
Photographer: Eric Coombs
Organization: Oregon Department of Agriculture
Area: Natural Resources - Biological Control

Image Number: 5436219

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Image Citation:(?) Eric Coombs, Oregon Department of Agriculture, Bugwood.org

Node Affiliation: Bugwood - UGA

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Image uploaded on Tuesday, May 17, 2011
Image Information last updated on Wednesday, May 18, 2011