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Jim Moore (Maryland)   cc-by-nc-4.0

Thecophora occidensis is a species of flies in the family thick-headed flies. They visit flowers of Suisun Marsh aster, roughleaf coneflower, sheep fleabane, and Pendleton's eryngo. They are diurnal.

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EOL has data for 10 attributes, including:

Known occurrences, collected specimens and observations of Thecophora occidensis (Walker 1849). View this species on GBIF