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Bombus sylvarum (Shrill Carder Bee) is a species of bees & apoid Wasps in the family bees. They visit flowers of common restharrow, greater knapweed, alfalfa, and Greater Bird's-foot-trefoil.

EOL has data for 9 attributes, including:

Known occurrences, collected specimens and observations of Shrill carder bee. View this species on GBIF