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Foliage or buds of broadleaf

Insects and mites

Ambermarked birch leafminer

Scientific name: Profenusa thomsoni (Konow)

Asian longhorned beetle

Scientific name: Anoplophora glabripennis (Motschulsky)

  • Revision 2024

Aspen serpentine leafminer

Scientific name: Phyllocnistis populiella Chambers

Aspen twoleaf tier

Scientific name: Enargia decolor (Walker)

Beech leaf-mining weevil

Scientific name: Orchestes fagi (L.)

  • Revision 2025

Birch budgall mite

Scientific name: Acalitus rudis (Canestrini)

Birch casebearer

Scientific name: Coleophora serratella (Linnaeus)

Birch leafminer

Scientific name: Fenusa pusilla (Lepeletier)

Birch sawfly

Scientific name: Arge pectoralis (Leach)

Birch skeletonizer

Scientific name: Bucculatrix canadensisella Chambers

Birch-aspen leafroller

Scientific name: Epinotia solandriana (Linnaeus)

Bronze birch borer

Scientific name: Agrilus anxius Gory

  • Revision 2024

Bruce spanworm complex

Scientific names:
  • Operophtera bruceata (Hulst)
  • Operophtera danbyi (Hulst)
  • Operophtera occidentalis (Hulst)
  • Revision 2025

Ceanothus silk moth

Scientific name: Hyalophora euryalis (Walker)

Crimson erineum mite

Scientific name: Aceria elongatus (Hodgkiss)

Elm leaf beetle

Scientific name: Xanthogaleruca luteola (Müller)

Elm leafminer

Scientific name: Kaliofenusa ulmi Sundevall

Elm zigzag sawfly

Scientific name: Aproceros leucopoda Takeuchi

  • Revision 2025

Emerald ash borer

Scientific name: Agrilus planipennis Fairmaire

  • Revision 2024

Fall cankerworm

Scientific name: Alsophila pometaria [Harris]

Fall webworm

Scientific name: Hyphantria cunea (Drury)

Forest tent caterpillar

Scientific name: Malacosoma disstria Hubner

  • Revision 2024

Gelechiid moth

Scientific name: Chionodes continuella (Zeller)

Greenstriped mapleworm

Scientific name: Dryocampa rubicunda (Fabricius)

Hemlock looper

Scientific names:
  • Lambdina fiscellaria (Guenée)
    • Lambdina fiscellaria fiscellaria
    • Lambdina fiscellaria lugubrosa
    • Lambdina fiscellaria somniaria
  • Revision 2025

Juniper webworm

Scientific name: Dichomeris marginella (Fabricius)

Larch pug moth

Scientific name: Eupithecia annulata (Hulst)

Large aspen tortrix

Scientific name: Choristoneura conflictana (Walker)

  • Revision 2024

Large oakapple gall

Scientific name: Amphibolips quercusinanis (Osten Sacken)

Late birch leaf edgeminer

Scientific name: Heterarthrus nemoratus (Fallen)

Lilac leafminer

Scientific name: Caloptilia syringella (Fabricius)

Lombardy leafminer

Scientific name: Paraphytomyza populicola (Walker)

Maple bladdergall mite

Scientific name: Vasates quadripedes Shimer

Maple leafblotch miner

Scientific name: Cameraria aceriella (Clemens)

Maple leafcutter

Scientific name: Paraclemensia acerifoliella (Fitch)

Maple leafroller

Scientific name: Sparganothis acerivorana MacKay

Mountain-ash sawfly

Scientific name: Pristiphora geniculata (Hartig.)

  • Revision 2024

Mourningcloak butterfly or spiny elm caterpillar

Scientific name: Nymphalis antiopa (Linnaeus)

Northern tent caterpillar

Scientific name: Malacosoma californicum pluviale (Dyar)

Oak leafshredder

Scientific name: Croesia semipurpurana (Kraft)

Ocellate gall midge

Scientific name: Acericecis ocellaris (Osten Sacken)

Orange tortrix

Scientific name: Argyrotaenia citrana (Fernie)

Packard’s gridle moth

Scientific name: Enypia packardata (Taylor)

Pear Sawfly (Pear slug)

Scientific name: Caliroa cerasi (Linnaeus)

Pear thrips

Scientific name: Taeniothrips inconsequens (Uzel)

Pero moth

Scientific name: Pero morrisonaria (Hy. Edwards)

Pine measuringworm moth

Scientific name: Hypagyrtis piniata (Pack.)

Poplar bud gall mite

Scientific name: Aceria parapopuli (Keif.)

Poplar-and-willow borer

Scientific name: Cryptorhynchus lapathi (Linnaeus).

Purplestriped shootworm

Scientific name: Zeiraphera unfortunana Powell

Red-barred tortrix

Scientific name: Ditula angustiorana (Haworth)

Redcrossed stink bug

Scientific name: Leptocorus trivittatus (Say)

Rusty tussock moth

Scientific name: Orgyia antiqua (L.)

  • Revision 2025

Saddleback looper

Scientific name: Ectropis crepuscularia (Denis and Schiffermuller)

Saddled prominent

Scientific name: Heterocampa guttivitta Walker

Satin moth

Scientific name: Leucoma salicis (L.)

  • Revision 2024

Speckled green fruitworm

Scientific name: Orthosia hibisci (Guenée)

Spongy moth

Scientific name: Lymantria dispar (Linnaeus)

  • Revision 2024

Spring cankerworm

Scientific name: Paleacrita vernata (Peck)

Spruce climbing cutworm

Scientific name: Syngrapha alias (Ottolengui)

Uglynest caterpillar

Scientific name: Archips cerasivorana (Fitch)

Western oak looper

Scientific name: Lambdina fiscellaria somniaria (Hulst)

White slaut

Scientific name: Tetracis cachexiata (Guenée)

Whitelined looper

Scientific name: Epirrita pulchraria (Taylor)

Whitetriangle leafroller

Scientific name: Clepsis persicana (Fitch)

Winter moth

Scientific name: Operophtera brumata (L.)

  • Revision 2025

Diseases caused by pathogens

Anthracnose of maple

Pathogen name: Aureobasidium apocryptum (Ellis & Everh.) Hermanides-Nijhof.

Birch leaf blister

Pathogen name: Taphrina carnea Johanson

Brown felt blight

Pathogen name: Herpotrichia juniperi (Duby) Petr.

Cercospora leaf spot

Pathogen name: Cercospora graphioides Ellis

Conifer-aspen rust

Pathogen name: Melampsora medusae f. sp. tremuloidis Shain

  • Revision 2024

Conifer-poplar rust

Pathogen name: Melampsora occidentalis Jacks.

  • Revision 2024

Dogwood anthracnose

Pathogen name: Discula destructiva Redlin

Dutch elm disease

Pathogen names:
  • Ophiostoma ulmi (Buisman) Nannf.
    • Ophiostoma novo-ulmi Brasier
    • Ophiostoma ulmi (Buisman) Nannf.
  • Revision 2025

Fir-blueberry rust

Pathogen name: Pucciniastrum geoppertianum (Kuehn) Kleb.

Fire blight

Pathogen name: Erwinia amylovora (Burrill) Winslow. et al.

Hemlock-willow rust

Pathogen name: Melampsora epitea Thuem.

Horsechestnut leaf blotch

Pathogen name: Phyllosticta paviae Desm.

  • Revision 2025

Ink spot of aspen

Pathogen name: Ciborinia whetzelii (Seaver) Seaver

  • Revision 2024

Leaf blight (Ventura populina)

Pathogen name: Venturia populina (Vuill.) Fabric.

Leaf blight (Linospora tetraspora)

Pathogen name: Linospora tetraspora G. E. Thompson

Maple leaf spot

Pathogen name: Phyllosticta minima (Berk. & M.A. Curtis) Underw. & Earle

Marssonina leaf spot

Pathogen name: Marssonina populi (Lib.) Magnus

Oak leaf blister

Pathogen name: Taphrina caerulescens (Desmaz. & Mont.) Tul.

Septoria (leaf-spot and) canker of poplars

Pathogen name: Sphaerulina musiva (Peck) Quaedvl., Verkley & Crous

  • Revision 2024

Septoria leaf spot of poplars

Pathogen name: Sphaerulina populicola (Peck) Quaedvl., Verkley & Crous

  • Revision 2024

Shepherd’s crook of aspen

Pathogen name: Venturia moreletii Rulamort

  • Revision 2024

Speckled tar spot

Pathogen name: Rhytisma punctatum (Pers.) Fr.

  • Revision 2025

Tar spot

Pathogen name: Rhytisma americanum Hudler & Banik

Tar spot (Rhytisma salicinum )

Pathogen name: Rhytisma salicinum (Pers.:Fr.) Fr.

Willow scab

Pathogen name: Venturia saliciperda (Nüesch)

Diseases and damage caused by other agents