34 ARTHROPODS 



Summary of Study of Grasshopper. — (i) The grass- 

 hoppers are found in open fields and on ground covered with 

 grass or weeds. They are Hght gray to green and some- 

 times ahnost black in color. How many different colors 

 have you found in grasshoppers ? How do they compare in 

 size? Are grasshoppers injurious or beneficial? Why? 

 How do they destroy the plant which they eat? How do 

 grasshoppers defend themselves? 



(2) What parts of the United States are visited by 

 grasshoppers most frequently? 



In Europe, grasshoppers do very little damage, and are in 

 fact, rather scarce. Do you know of any country in ancient 

 times that was visited by them? Why do grasshoppers 

 migrate ? 



In ancient times in the oriental countries the damaging 

 genus was the Schistocerca, but the most devastating genus 

 in America is Melanoplus. 



Mount as many different species of grasshoppers as you 

 can find. 



THE CRICKET 



Gryllus sp. 



(1) What is the color of the cricket? What is its 

 method of locomotion? What are the principal differences 

 between the general appearance of the cricket and that of 

 the grasshopper? 



(2) Turn a cricket from dorsal to ventral side and notice 

 the general shape of the body. How many divisions ? How 

 are they separated? Is the body segmented? How many 

 segments in the antennae? How many legs and where at- 



