Insect & Disease Directory

These diseases impact trees and shrubs.

• Anthracnose (Discula, Apiognomonia)
• Bacterial Leaf Scorch (Xylella fastidiosa)
• Cedar-Hawthorn Rust (Gymnosporangium globosum)
• Fire Blight (Erwinia amylovora)
• Galls (Cecidia)
• Oak Wilt (Ceratocystis fagacearum)
• Pine Needle Rust (Coleosporium asterum)
• Powdery Mildew (Sawadaea tulasnei, Erysiphe pulchra)
• Salt Spray
• Sooty Mold (Generas: Capnodium, Fumago, Ascomycete and Scorias)
• Verticillium Wilt (Verticillium dahliae, verticillium albo-atrum)
• White Rot (Armillaria)
• Witches Broom

These insects feed on trees and shrubs.

• Adelgids (Adelges, Pineus)
• Aphids (Aphidoidea)
• Asian Longhorned Beetles (Anoplophora glabripennis)
• Bagworms (Thyridopteryx ephemeraeformis)
• Bark Beetles and Borers
• Elm Bark Beetles (Scolytus multistriatus, Hylurgopinus rufipes)
• Birch Leafminers (Fenusa pusilla (Lepeletier))
• Black Turpentine Beetles (Dendroctonus terebrans)
• Black Vine Weevils (Otiorhynchus sulcatus (Fabricus) )
• Bronze Birch Borers (Agrilus anxius)
• Cankerworms (Paleacrita vernata, Alsophila pometaria, Ennomos subsignaria, Erannis tiliaria)
• Carpenter Ants (Camponotus pennsylvanicus, C. noveboracensis and C. nearcticus)
• Emerald Ash Borers (Agrillus plenipennis)
• Fall Webworms (Hypanthia cunea)
• Gall Midges (Cecidomyiidae, Itonididae)
• Gypsy Moths (Lymantria dispar dispar)
• Hemlock Woolly Adelgids (Adelges tsugae Annand)
• Japanese Beetles (Popillia japonica)
• Lacewings (Neuroptera)
• Lace Bugs (Tingidae)
• Ladybugs (Coleoptera: Coccinellidae)
• Leaf Beetles (Xanthogaleruca luteola, Plagiodera versicolora, Calligrapha multipunctata)
• Peachtree Borers (Synanthedon exitiosa, Synanthedon pictipes)
• Pitch Mass Borers (Synanthedon pini)
• Plant Bugs (Miridae)
• Scale Insects (Coccoidea)
• Shothole Borers (Scolytus rugulosus)
• Spider Mites (Tetranychidae)
• Tent Caterpillars (Malacosma americanum)
• Twolined Chestnut Borers (Agrilus bilineatus)
• Two-banded Japanese Weevils (Pseudocneorhinus bifasciatus)