100 INSECT PESTS OF FARM, GARDEN AND ORCHARD 



Texas. These two differ from the smaller species in laying 

 only one or two masses of eggs, and the eggs of differentialis 



FIG. 67. The American acridium (Schistocerca americana Scud.). (After 



Riley.) 



have often been found placed under the bark of logs, but other- 

 wise their habits are very similar. The two-striped locust is 



characterized by two yel- 

 lowish stripes extending 

 from the eyes along, the 

 sides of the head and 

 thorax to the extremities 

 of the wing-covers, and 



is probably th*e species 

 FIG. 68. The Two-striped locust (Mela- 



noplus bivittatus Scud.). (After Riley.) most commonly observed 



by the farmer. 



The Differential Locust. Throughout the Mississippi Valley 

 from Illinois southward, the Differential Locust * is one of the 



FIG. 69. The Differential locust (Melanoplus differentialis Thos.). (After 



Riley.) 



most common and destructive grasshoppers, and is an excellent 

 example of several of our more abundant and injurious species 

 which have very similar habits. 



* Melanoplus differentialis Thos. 



