A Petition for Experimental Open–Field Release of Hypena Opulenta a Potential Biological Control Agent of Swallowworts (Vincetoxicum nigrum and V. rossicum) in North America. Submitted to Canadian Biological Control Review Committee-CFIA an

Casagrande, R., Weed, A., Hazlehurst, A.F., Tewksbury, L., Schwarzländer, M., Gassmann, A., Bourchier, R.S. (2011). "A Petition for Experimental Open–Field Release of Hypena Opulenta a Potential Biological Control Agent of Swallowworts (Vincetoxicum nigrum and V. rossicum) in North America. Submitted to Canadian Biological Control Review Committee-CFIA and USDA-APHIS Technical Advisory Group for Biological Control of Weeds.", 48 pages.