Willamette Fritillary (Speyeria callippe ssp.)
The Willamette Fritillary is an undescribed subspecies of the Callippe Fritillary (Argynnis callippe Boisduval) (see depiction below) that apparently was restricted to the Willamette Valley in northwestern Oregon, USA.
The form is now considered extinct.
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edited: 02.02.2024