Here are some websites that provide additional information.
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Information and images of economically important beetles that feed on trees and shrubs.
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Invasive and exotic species whose introduction does or is likely to cause economic or environmental harm or harm to human health.
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Consolidation and dissemination of information and programs focused on invasive species, forest health, natural resources and agricultural management at the state, regional, national and international levels.
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The National Plant Board is a non-profit organization of the plant pest regulatory agencies of each of the states and the Commonwealth of Puerto Rico. Member agencies must be members in good standing of the Regional Plant Board in which their state or commonwealth is located.
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Supports APHIS' goal of safeguarding U.S. agricultural and environmental resources by ensuring that new introductions of harmful plant pests and diseases are detected as soon as possible, before they have a chance to cause significant damage.
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PPQ safeguards agriculture and natural resources from the risks associated with entry, establishment, or spread of plant pests and noxious weeds.
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Aims to improve economic, environmental, and social conditions in the United States and globally.
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The NISC provides interdepartmental coordination of invasive species actions and works with other federal and non-federal groups to address invasive species issues at the national level.
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A national awareness-building effort to stop the movement of firewood which is spreading invasive pests and killing trees.
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USFS manages national forests and grasslands, conducts forestry research, and provides technical and financial assistance to state and private forestry agencies.
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Established in 2005 at the National Agricultural Library, the NISIC web site serves as a reference gateway to information, organizations, and services about invasive species.