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Museum of Comparative Zoology, Harvard University   cc-by-nc-sa-3.0

Systoechus oreas is a species of flies in the family bee flies. They visit flowers of (page not found), Common perennial gaillardia, and western aster. They are diurnal.

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EOL has data for 8 attributes, including:

Known occurrences, collected specimens and observations of Systoechus oreas Osten Sacken 1877. View this species on GBIF