Helopicus subvarians (Banks)
has been collected mostly from medium to large creeks and rivers in Pennsylvania. Previous adult records are from the Delaware River basin in Carbon County and the Susquehanna River basin in Huntingdon, Lycoming, and Union Counties. Helopicus subvarian s is found from Maine and Quebec south to Florida.
New records: DAUPHIN: (S) Susquehanna River, on Market Street Bridge near downtown Harrisburg, 1 May 2000, 1♂, 1♀ (DB); Mifflin: (S) Penns Creek, near mouth of Swift Run, 20 May 1998, 1♂ (CL); same location, 22 May 2007, 1♀ (CL); WAYNE: (D) Delaware River, 1 km downstream of Stockport, 20 May 2007, 1♀ (TD); Delaware River, across from the New York State Forest Preserve at Bouchouxville Rd., 24 June 2007, 1♀ (TD).