Marsh Conehead

Version of computer-generated U.S. distribution map displayed above was harvested from SINA on Aug-05-2018.See also this manually generated dot map showing U.S. and Canadian records, with shaded area showing likely general distribution.

Version of manually-generated dot map displayed above, showing U.S. and Canadian records, was harvested from SINA on Aug-05-2018.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.