Summary description from Wikipedia:

Operophtera occidentalis in languages:

English

Western Bruce Spanworm

English

Western Winter Moth

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Parent Taxon

• Operophtera

Sibling Taxa

• Operophtera bruceata
• Operophtera brumata
• Operophtera brunnea
• Operophtera crispifascia
• Operophtera danbyi
• Operophtera elegans
• Operophtera fagata
• Operophtera japonaria
• Operophtera mizunoi
• Operophtera nana
• Operophtera occidentalis
• Operophtera peninsularis
• Operophtera rectipostmediana
• Operophtera relegata
• Operophtera tenerata
• Operophtera variabilis

Top Observation Places

• Vancouver