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Oregon Invasive Species Council
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Horseshoe Lake previous to 2005
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Purple loosestrife leaf beetle (Galerucella calmariensis)
Purple loosestrife leaf beetle (Galerucella pusilla)
Purple loosestrife root weevil (Hylobius transversovittatus)
Purple loosestrife seed weevil (Nanophyes marmoratus)
Infestation at Horseshoe Lake in 2003
Infestation at Horseshoe Lake in 2004
Page updated: January 02, 2008
