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United States Department of Agriculture

Agricultural Research Service

Root Crown Weevil biocontrol
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1 - Yellow starthistle project
2 - California's #1 invasive species
3 - Watershed-level approach
4 - Chaetorellia succinea biological control
5 - Fly emergence laboratory tests
6 - Model application of fly and Yellow starthistle interactions
7 - Linkage of insect and plant models
8 - Root Crown Weevil biocontrol

Root Crown Weevil biocontrol

More information on Certapion basicorne:


No-choice host specificity testing (1.2 MB). 

Smith, L.  2007.  Physiological host range of Ceratapion basicorne, a prospective biological control agent of Centaurea solstitialis (Asteraceae).  Biological Control 41: 120-133. 


Field tests conducted in Turkey (301 KB). 

Smith, L., R. Hayat, M. Cristofaro, C. Tronci, G. Tozlu and F. Lecce.  2006.  Assessment of risk of attack to safflower by Ceratapion basicorne (Coleoptera: Apionidae), a prospective biological control agent of Centaurea solstitialis (Asteraceae).  Biological Control  36(3): 337-344. 


Petition submitted to TAG (USDA-APHIS Technical Advisory Group) (5 files = 22.2 MB).

Smith, L.  2006.  Proposed Field Release of the Weevil, Ceratapion basicorne (Coleoptera: Apionidae), from Turkey for Biological Control of Yellow Starthistle (Centaurea solstitialis) in the United States.  Petition 06-01 to USDA-APHIS Technical Advisory Group (TAG).  138 pp.

 C. basicorne petition pt1 (18.9 MB)

 C. basicorne petition pt2 (110 KB)

 C. basicorne petition pt3 (2.43 MB)

 C. basicorne petition pt4 (414 KB)

 C. basicorne petition pt5 (301 KB)


APHIS_PPQ and TAG (Technical Advisory Group) regulatory & review process.



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Last Modified: 4/17/2017
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