Synonyms and other taxonomic changes
Chelostoma rapunculi (Lepeletier, 1841)
Heriades rapunculi Lepeletier, 1841; Apis fuliginosa_homonym Panzer, 1798; Heriades nigricornis Nylander, 1848; Chelostoma inerme Eversmann, 1852; Heriades casularum Chevier, 1872; Osmia (Acanthosmia) archanensis Cockerell, 1928; Osmia (Acanthosmia) platyodonta Cockerell, 1928
Specimens have been collected in NY and CT
Oligolectic on Campanula
(Campanulaceae) and possibly on related genera (Amiet et al., 2004, Sedivy et al., 2008, Westrich, 1989). The Hosts section on its Discover Life species page
lists known floral associations based on specimen records and images.
Nests in preexisting cavities: insect burrows and drilled borings in dead wood or bark; hollow stems (e.g. Phragmites) and drilled borings in stems.