PLATE VI. 



A. — Acaudus lychnidis, cornicle of alate form. 



B. — Acaudus lychnidis, cauda of alate form. 



C. — Anuraphis amygdali, cornicle of alate form. 



D. — Anuraphis amygdali, cauda of alate form. 



E. — Anuraphis amygdali, head of alate form. 



F. — Anuraphis carotae, cornicle and cauda of alate form. 



G. — Aphis sambuci, head of alate form. 



H. — Aphis sambuci, cornicle of alate form. 



I. — Aphis sambuci, cauda of alate form. 



J. — Brevicoryne brassicae, cauda of alate form. 



K. — Brevicoryne brassicae, cornicle of alate form. 



L. — Aspidaphis polygonii, cornicle of alate form. 



M. — Aspidaphis polygonii, cornicle more enlarged. 



N. — Aspidaphis polygonii, cauda of apterous form. 



O. — Aspidaphis polygonii, head of apterous form. 



P. — Atarsos grindeliae, cornicle of alate form. 



Q.— Atarsos grindeliae, head of alate form. 



R. — Atarsos grindeliae, cauda of alate form. 



S. — Atarsos grindeliae, tibia of alate form. 



T. — Brachycolus stellariae, cornicle of alate form. 



U. — Brachycolus stellariae, cauda of alate form. 



V. — Carolinaia cyperi, cornicle of alate form. 



W. — Carolinaia cyperi, cauda of alate form. 



X. — Cavariella pastinacae, cornicle of alate form. 



Y. — Cavariella pastinacae, cauda of alate form. 



Z. — Cavariella pastinacae, tubercle of alate form. 



AA. — Hyadaphis xylostei, cauda of apterous form. 



BB. — Hyadaphis xylostei, cornicle of apterous form, 



CC. — Toxoptera aurantiae, head of alate form. 



DD. — Toxoptera aurantiae, cornicle of alate form. 



EE. — Toxoptera aurantiae, cauda of alate form. 



FF. — Rhopalosiphum rufomaculata, cornicle of alate form. 



GG. — Rhopalosiphum rufomaculata, head of alate form. 



HH. — Rhopalosiphum rufomaculata, cauda of alate form. 



II. — Rhopalosiphum, nymphaeae, cornicle of alate form. 



JJ. — Rhopalosiphum nymphaeae, cauda of alate form. 



KK. — Pergandeidia ononidis, cauda and cornicle of alate form. 



LL. — Pergandeidia trirhodus, cauda of apterous form. 



MM. — Pergandeidia trirhodus, cornicle of apterous form. 



NN. — Liosomaphis berberidis, cornicle and cauda of apterous form. 



00. — Liosomaphis berberidis, cauda of alate form. 



PP. — Cryptosiphum artemesiae, cornicle of apterous form. 



QQ. — Cryptosiphum artemesiae, cauda of apterous form. 



RR. — Hyalopterus arundinis, cornicle of alate form. 



SS. — Hyalopterus arundinis, cauda of alate form. 



TT. — Hyalopterus deformans, cauda of apterous form. 



UU. — Hyalopterus deformans, cornicle of apterous form. 



VV. — Hyalopterus deformans, cauda of alate form. 



WW. — Hyalopterus deformans, cornicle of alate form. 



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