PLATE VII. Aphididae. 



1. Longistigma (Lachnus) caryae Harris, — apterous form, x I, 



2. Aphis pomi DeGeer, — green apple aphid, x 2. 



3. Aphis psendobrassicae Davis, — turnip aphid, x 1. 



4. Anur aphis tidipae Boyer, x 1. 



5. Brevicoryne brassicae Linnaeus, — cabbage aphid, x 1. 



6. Amphorophora rhois Monell, x 1. 



Photographs by B. H. Walden. 



