Items of Interest:

Discovery of forest pest triggers state, federal response (Jul 29, 2008)
Missouri Department of Conservation.
On Jul 25, 2008, the Animal and Plant Health Inspection Service (APHIS) positively identified emerald ash borer (EAB), Agrilus planipennis, in Wayne County, Missouri. This is the first detection of EAB in the State of Missouri.

Emerald Ash Borer - Information for Missouri and Reporting Options
Missouri Department of Conservation.

Find Experts and See State Specific Threats:

Invasive Species Experts - Missouri
Aquatic Nuisance Species Task Force.

Nonindigenous Species List - Missouri or Display Species List by Taxonomic Group (select State)
DOI. USGS. Florida Integrated Science Center.
Includes fact sheets, maps and collection information.

State Noxious Weed List - Missouri
USDA. NRCS. National Plant Data Center. PLANTS Database.
Designated legally noxious plants.

Pest Tracker - Missouri
USDA. APHIS. Cooperative Agricultural Pest Survey. National Agricultural Pest Information System.

Forest Threat Summary Viewer - Missouri
USDA. FS. Eastern Forest Environmental Threat Assessment Center.
See what threats (invasive plants, insects and diseases) are in my state.