Rasvena terna (Frison)

has only two previous confirmed adult records in Pennsylvania, a 1994 record from Grays Run in Lycoming County and a 1958 record of unknown location. Surdick (2004) reported that R. terna is restricted to the Appalachian Highlands of eastern North America, from Maine south to North Carolina and Tennessee.

New records: CLINTON: (S) North Branch Tangascootack Creek, near mouth, 13 May 1998, 1♀; FORREST: (O) Minister Creek, 100 m upstream of SR 2001, 14 April 2008, 5 late instar nymphs, (RR). These are the first confirmed collection of Rasvena nymphs in Pennsylvania. These records suggest a preference for small, clear coldwater creeks.