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 animals.
These comprise the common injurious
species that do not feed on living
plants.