PLATE I. 
A. — Anoecia querci, apterous form. 
B. — Anoecia querci, wings. 
C. — Anoecia. querci, antenna of alate form. 
D. — Anoecia corni, fore wing. 
E. — Anoecia corni, antenna of alate form. 
F. — Anoecia corni, cornicle of alate form. 
G. — Nippolachnus pyri, fore wing. 
H. — Nippolachnus pyri, head of alate form. 
I. — Anoecia corni, head of alate form. 
J. — Nippolachnus pyri, cornicle of alate form. 
K. — Nippolachnus pyri, antenna of alate form. 
L. — Eulachnus agilis, body of alate form. 
M. — Eulachnus agilis, fore wing. 
N. — Eulachnus agilis, antenna of alate form. 
0. — Eulachnus agilis, cornicle of alate form. 
P. — Eulachnus rileyi, head of alate form. 
Q. — Eulachnus rileyi, cornicle of alate form. 
R. — Eulachnus rileyi, segment III, antenna of alate form. 
S. — Essigella calif ornica, body of alate form. 
T. — Essigella calif ornica, fore wing. 
U. — Essigella californica, antenna of alate form. 
V. — Essigella californica, cornicle of alate form. 
W. — Essigella californica, head of alate form. 
X. — Essigella californica, cauda of alate form. 
Y. — Essigella californica, antenna of apterous form 
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