Osmia (Melanosmia) inermis Zetterstedt, 1838

Osmia (Melanosmia) inermis Zetterstedt, 1838 View in CoL

Unarmed Mason

Notes: This species was reported for Connecticut in Mitchell (1962) and remains plausible in the northern counties of Connecticut although we have not been able to confirm any specimens. The reason we accept Mitchell’s record is that the other similar non-metallic species are less plausible on biogeographic grounds (Rightmyer et al. 2010). All regional records should be rechecked however with respect to updated keys to non-metallic Osmia by Rightmyer et al. (2010). Osmia inermis was last recorded in Massachusetts in 1914 (Veit et al. 2022[“2021”]), however it was detected in 2006 in Orange County, New York during a survey of the Black Rock Forest Preserve (Giles & Ascher 2006). This site in southern New York State and Connecticut are believed to be at the southern range limits of this northern species.