Plants
(non-native trees, shrubs, vines, grasses, and herbaceous plants)
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Photo: Sericea lespedeza (Lespedeza cuneata). Credit: SR Turner, Missouriplants.com
Animals
(non-native mammals, birds, and amphibians)
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Photo: European starling (Sturnus vulgaris). Credit: Tony Gazso, Lake Metroparks
Insects
(Non-native beetles, wasps, spiders, flies, and worms)
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Photo: Emerald ash borer (Agrilus planipennis). Credit: American Forest Foundation
Pathogens and Diseases
(disease-causing bacteria, viruses, fungi, and parasites)

Photo: White-Nose Syndrome (Pseudogymnoascus destructans). Credit: Steve Taylor, University of Illinois Urbana-Champaign Prairie Research Institute