Anoecia corni
Common dogwood-grass aphid
Insects
Armillaria ostoyae
Dark honey fungus
Fungi
Cosmia trapezina
Dun-bar
Insects
Croesus latitarsus
Dusky birch sawfly
Insects
Diurnea lipsiella
Diurnea lipsiella
Insects
Dothichiza populea
Dothichiza canker
Fungi
Dothistroma septosporum
Dothistroma needle blight
Fungi
Gilletteella cooleyi
Douglas fir woolly aphid
Insects
Ophiostoma novo-ulmi
Dutch elm disease
Fungi
Paranthrene tabaniformis
Dusky clearwing
Insects
Phyllonorycter klemannella
Dark alder midget
Insects
Polyporus squamosus
Dryad’s saddle
Fungi
Total: 15