Calythea nigricans is a species of flies in the family anthomyiid flies. They visit flowers of shepherd's purse, Caulophyllum thalictroides, Cassia, and Ruth's milkweed. They are diurnal.

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EOL has data for 8 attributes, including:

Known occurrences, collected specimens and observations of Calythea nigricans (Robineau-Desvoidy 1830). View this species on GBIF