CHAPTER II 
IMPORTANT AND FAMILIAR INSECTS 
In the preceding chapter we studied the grasshopper, a 
typical member of the Orthoptera. We shall now take up 
several other orders of insects, with most of which we are 
already familiar. 
18. Hemiptera. — Another common order of insects is 
the Hemiptera (he-mip'ter-a: Greek, hemi, half; pteron, 
Figure 16. — Scale Insects Photographed on a Fern Frond. 
The insects are oval in outline and colored so that they look much like the 
green frond upon which they are feeding. 
wing). To this order belong such common insects as the 
cicadas, plant lice, the woolly aphis, and the bane of the 
orchard, the San Jose (san ho-sa') scale. Some of these 
are very harmful. When the San Jos6 scale is allowed to 
feed freely, whole orchards may be destroyed. Plant lice 
32 
