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Erynnis tristis (Mournful Duskywing) is a species of butterflies in the family skipper butterflies. They visit flowers of Mentha canadensis, English Lavendar, scorpionweed, and yellow star-thistle.

EOL has data for 10 attributes, including:

Known occurrences, collected specimens and observations of Mournful Duskywing. View this species on GBIF