PLECOPTERA NYMPHS OF NORTH AMERICA 127 
PLATE 1 
Vig keyyy 
Amani \! 
Rhy mn 
Tay ae 
\ 
\ 
Tite 
eae, 
op alteye 
re 
Pteronarcys californica 
Jp aN 
‘ ACY a “i 
Fy ME 
/1) ' 16 |! 
am 
! 
uf 
1; 
4 
