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Alexey Yabs   cc-publicdomain

Didea alneti is a species of flies in the family flower flies. They visit flowers of brown knapweed, Euphrasia officinalis, and spotted St. Johnswort. They are . Individuals can grow to 13.8 mm.

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EOL has data for 14 attributes, including:

Known occurrences, collected specimens and observations of Didea alneti (Fallen 1817). View this species on GBIF