Dots show county records; shaded area shows likely general distribution.
County-level distribution map produced in 2003 from records in a database available on this site.

The group of records in northeast Ohio is documented in this 2014 blog by Lisa Rainsong.

In a 6 Sep 2015 email, Norman Levey reported that he first noticed this species in Lincoln, Massachusetts, in 2008, and that its numbers seem to be increasing.