Subjects affecting spiny plumeless thistle (Carduus acanthoides)
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    N/A (3)
    Larva(e) (2)
    Adult(s) (1)

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Image Subject Name Scientific Name Description
0580024 thistle crown weevil Trichosirocalus horridus neocrosis of rosette due to feeding
0580032 thistle crown weevil Trichosirocalus horridus
0580027 thistle crown weevil Trichosirocalus horridus close up of third instar
0580028 thistle crown weevil Trichosirocalus horridus stand before release of weevil
0580030 thistle crown weevil Trichosirocalus horridus collapse of thistle rosette infested by larvae
0580031 thistle crown weevil Trichosirocalus horridus stand 8 years after release

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