leafy spurge biological control
| 17 Images |
 Montana State University Archive Montana State University |
(a) flowering stems, (b) dense patch |
 USDA Agricultural Research Service Archive USDA Agricultural Research Service |
rangeland severly infested |
 USDA Agricultural Research Service Archive USDA Agricultural Research Service |
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 USDA Agricultural Research Service Archive USDA Agricultural Research Service |
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 USDA APHIS PPQ Archive USDA APHIS PPQ |
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 USDA APHIS PPQ Archive USDA APHIS PPQ |
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 USDA APHIS PPQ Archive USDA APHIS PPQ |
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 USDA APHIS PPQ Archive USDA APHIS PPQ |
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 USDA APHIS PPQ Archive USDA APHIS PPQ |
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 USDA APHIS PPQ Archive USDA APHIS PPQ |
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 USDA APHIS PPQ Archive USDA APHIS PPQ |
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 USDA APHIS PPQ Archive USDA APHIS PPQ |
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 USDA APHIS PPQ Archive USDA APHIS PPQ |
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 USDA APHIS PPQ Archive USDA APHIS PPQ |
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 USDA APHIS PPQ Archive USDA APHIS PPQ |
(a) adult (b) gall made by midge larva (inset) |
 USDA Agricultural Research Service Archive USDA Agricultural Research Service |
Leafy spurge infestation on the N-Bar Ranch, Grass Range, Montana, prior to release of the beetle that same year |
 USDA Agricultural Research Service Archive USDA Agricultural Research Service |
N-Bar Ranch, Grass Range, Montana, four years after release of beetle |
