Osmia (Melanosmia) atriventris Cresson 1864

Osmia (Melanosmia) atriventris Cresson, 1864: 29 (Connecticut lectotype designated by Cresson, 1916). Lectotype. Female USA: Connecticut: E. Norton (USNM). Notes: This mason bee is reported to be a major visitor to blueberries (Vaccinium) in Maine (Dibble et al. 2017; Stubbs et al. 1997), and it has been collected from Vaccinium in Connecticut as well. It has been found at the edge of northern wetlands, agricultural land, a coastal wildlife refuge, a riverbank, powerline ROW, and an arboretum.