Fourteen species of Plecoptera, Allocapnia aurora, A. simmonsi, Parale
uctra sara, Ostrocerca albidipennis, O. prolongata, Prostoia completa,
P. similis, Bolotoperla rossi, Oemopteryx contorta, Taenionema atlant
icum, Taeniopteryx ugola, Acroneuria filicis, Agnetina flavescens and
Hansonoperla appalachia are reported for the first time from Pennsylva
nia. Two additional species, Diploperla duplicata and Agnetina capitat
a are confirmed for the state. Alloperla neglecta, Isogenoides doratus
and Yugus arinus are deleted from the state list. With these addition
s and deletions, the number of species known from Pennsylvania is 113.