Occurrence of Trichosirocalus horridus (Coleoptera: Curculionidae) on Native Cirsium altissimum Versus Exotic C. vulgare in North American Tallgrass Prairie

@inproceedings{Takahashi2009OccurrenceOT,
  title={Occurrence of Trichosirocalus horridus (Coleoptera: Curculionidae) on Native Cirsium altissimum Versus Exotic C. vulgare in North American Tallgrass Prairie},
  author={Masaru Takahashi and Svaťa M. Louda and Tom E. X. Miller and Charles W. O'brien†},
  booktitle={Environmental entomology},
  year={2009}
}
ABSTRACT Postrelease studies can provide data with which to evaluate expectations based on prerelease tests of biological control insects. In 2004, we observed Trichosirocalus horridus Panzer (Coleoptera: Curculionidae), the rosette weevil introduced into North America against Eurasian thistles, feeding on native tall thistle, Cirsium altissimum L. Spreng., in tallgrass prairie. In this study, we examined the rosette weevil's use of tall thistle, compared with its use of the co-occurring… 

First documentation of adult Trichosirocalus horridus on several non-target native Cirsium species in Tennessee

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Genetic and morphological studies of Trichosirocalus species introduced to North America, Australia and New Zealand for the biological control of thistles.

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Molecular evidence, morphological analysis and host plant associations support the synonymy of T. horridus (Panzer, 1801) and T. briesei (Alonso-Zarazaga & Sánchez-Ruiz, 2002), which is determined to have been established in Canada, USA, New Zealand and Australia and to be established in Australia.

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