Eastern persius duskywing: COSEWIC assessment and status report: chapter 11
Special Significance of the Species
Erynnis p. persius is a regional endemic, restricted to the Great Lakes region east to New England and south to Virginia and West Virginia. It is presently considered a subspecies of a wide-ranging species. Matt Holder, however, believes it may be taxonomically distinct, based on biological and morphological differences between it and the three other identified subspecies within the species, and may deserve full species status, pending a more thorough taxonomic review of material.
No traditional knowledge on this skipper was discovered.
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