Summary description from Wikipedia:

Pachysphinx occidentalis in languages:

English

Big Poplar Sphinx Moth

English

Western Poplar Sphinx Moth

English

Western Poplar Sphinx

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Parent Taxon

• Pachysphinx

Sibling Taxa

• Pachysphinx modesta
• Pachysphinx occidentalis
• Pachysphinx regalis

Child Taxa

• Pachysphinx occidentalis occidentalis
• Pachysphinx occidentalis peninsularis

Top Observation Places

• Boulder
• Albuquerque
• Rio Rancho