ARRANGEMENT OF INJURIOUS SPECIES IN 
THIS BOOK 
THE insect pests described in this book are grouped as follows: 
1. Pests of garden and field crops; including all injurious species 
commonly found on such plants as corn, potatoes, cucumbers, wheat, 
squashes, and the like. With these are included pests of greenhouses. 
2. Pests of orchard and small fruits: the common injurious species 
of apples and other tree fruits, currants and similar bush fruits, and 
strawberries or other low-growing plants, usually designated as fruits. 
3. Pests of the household, of stored products, and of domestic ani- 
mals. These comprise the common injurious species that do not feed 
on living plants. 
Within each of the first two groups the various species are arranged 
according to the place where they are found at work. Thus, insects that 
work within the soil are treated first; then the borers found within 
stem, trunk, or imb; then the pests found feeding on the surface of 
stem or trunk; then the leaf feeders; and finally the insects attacking 
flower or fruit. Among leaf feeders, again, the insects are grouped 
according to their general characteristics, whether caterpillars, sucking 
bugs, and so on. 
The page headings are arranged to serve as an index to the place 
where an insect is found at work, and its general characteristics. 
The author hopes by this means to facilitate the identification of a 
pest by those who are not familiar with insects, and to avoid as 
far as possible the duplication inevitable where one attempts to group 
pests according to host plants—a confusion unavoidable because so 
many of our common pests feed on several varieties of plants, and 
may properly be listed as well under one as under another. 
ix 
