Black Peach Aphis 



149 



but after its last moult the slimy covering is thrown off 

 and the skin becomes a light orange color and clean and 

 dry. It then goes into the ground, and emerges again in 

 twelve or fifteen days as a fly. It spends the winter in the 

 pupal stage just under the surface of the soil. Arsenical 

 poisons, either dusted or sprayed on the foliage will con- 

 trol it. Because of its slimy nature, even road dust thrown 

 on it often results in extermination. 



The bag-worm: A, caterpillar removed from the bag; 

 b, male chrysalis; c, wingless and legless female moth; d, 

 winged male; e, bag cut open showing female chrysalis and 

 eggs; f, caterpillar in the bag; g, cones made by the little 

 caterpillars as they are beginning to spin their bags. 



Black Peach Aphis. These plant lice are shining black 

 in color, one form having wings and the other possessing 

 none. They feed upon the juices of the peach, cherry and 

 plum trees, working upon the leaves, stem and roots. They 

 can be controlled on the leaves and twigs by spraying with 

 the tobacco preparations as for green aphis. If very nu- 

 merous on roots, scrape the soil away and apply pulverized 

 tobacco. 



