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Alders

  • Latin name: Alnus sp.
  • French name: Aulne
  • Taxonomic Serial Number:
Description
Insects and mites

Insects that cause damage to this tree.

Foliage or buds

Bruce spanworm complex

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

Ceanothus silk moth

Scientific name: Hyalophora euryalis (Walker)

Large aspen tortrix

Scientific name: Choristoneura conflictana (Walker)

  • Revision 2024

Rusty tussock moth

Scientific name: Orgyia antiqua (L.)

  • Revision 2025

Saddleback looper

Scientific name: Ectropis crepuscularia (Denis and Schiffermuller)

Spongy moth

Scientific name: Lymantria dispar (Linnaeus)

  • Revision 2024

Roots, bark, stem or trunk, or branches

Ceanothus silk moth

Scientific name: Hyalophora euryalis (Walker)

European elm bark beetle

Scientific name: Scolytus multistriatus (Marsham)

  • Revision 2025

Rusty tussock moth

Scientific name: Orgyia antiqua (L.)

  • Revision 2025
Diseases caused by pathogens

Diseases caused by pathogens that cause damage to this tree.

Nectria dieback

Pathogen name: Nectria cinnabarina (Tode:Fr.) Fr.

Roots, bark, stem or trunk, or branches

Annosus root and butt rot (Heterobasidion occidentale)

Pathogen name: Heterobasidion occidentale Otrosina & Garbel

Cytospora canker

Pathogen name: Cytospora chrysosperma (Pers.) Fr.

  • Revision 2024

Hardwood Trunk Rot

Pathogen name: Phellinus igniarius (L.:Fr.) Quél.

Hypoxylon canker

Pathogen name: Entoleuca mammata (Wahlenb.) J.D. Rogers & Y.M. Ju

  • Revision 2024

Nectria canker

Pathogen name: Neonectria ditissima (Tul. & C. Tul.) Samuels & Rossman

  • Revision 2024

Red heart rot

Pathogen name: Stereum sanguinolentum (Albertini & Schwein) Fr.

  • Revision 2024

Sterile conk trunk rot of birch

Pathogen name: Inonotus obliquus (Pers.:Fr.) Pilát

Stringy Butt Rot

Pathogen name: Perenniporia subacida (Peck) Donk

White mottled rot

Pathogen name: Ganoderma applanatum (Pers.) Pat.

White spongy trunk rot

Pathogen name: Fomes fomentarius (L.) Fr. (Common name for this fungus: tinder conk)

  • Revision 2024

White spongy trunk rot of hardwoods

Pathogen name: Spongipellis delectans (Peck) Murrill