US Counties within Illinois in which the Spectaclecase (mussel), is known to or is believed to occur:

State County
Illinois Adams
Illinois Hancock
Illinois Henderson
Illinois Madison
Illinois Massac
Illinois Mercer
Illinois Pike
Illinois Rock Island
Illinois Wabash
Illinois Will

This report contains Counties in which this species is known to or is believed to occur. If you are looking for the Section 7 range (for Section 7 Consultations), please visit the IPaC application.