Pestilence in Nature
This list includes organisms that are affected from any kind of affliction, such as parasitism or disease- including fungal infections, parasitism, galls, blight, cankers, leaf spot, mealybugs, aphids, mange, tick infestation, chytridiomycosis, mite infestation, white-nose syndrome, caterpillar infestation damage, parasitic plants, etc.
Christine Young created this list  7 years ago 
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  Parasitized Bolete 
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parasite in water drop on dragonfly ( Amphiallagma parvum ) 
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  Parasite 
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  murder she wrote... 
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  The Chestnut Lamprey (Ichthyomyzon castaneus) 
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  Ant infected by Cordyceps Fungi 
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  Mucormycosis 
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  Black Oak Burl 
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  Parasitized false morel - Hypomyces cervinigenus 
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Phylloxera spinosa 
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Ocellate gall midge (Acericecis ocellaris)- 
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Pachypsylla celtidismamma-Hackberry Nipple Gall 
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  Six-Spotted Tiger Beetle (with Mites) 
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  Blue Dasher (with Mites) 
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  Tomentose Burying Beetle (with Phoretic Mites) - Nicrophorus tomentosus 
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  Parasitic Fungus on Amanita 
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  The Plague of Gypsy Moths - Eggs, Pupae, and Adults 
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  Caterpillar Mummy 
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  Monarch Butterfly Chrysalis 
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  Dogwood Sawfly Larvae 
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  Great Spangled Fritillary 
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  Amanita Mold (Hypomyces hyalinus) 
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  Beech Blight Aphids 
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  Eastern Spruce Gall Adelgid on White Spruce