416 



ESSENTIALS OF ZOOLOGY 



gion which bears three pairs of legs and two pairs of wings, when 

 they are present in the nymphs and adults; the abdomen bears a 

 variable number of segments in the various groups of insects, ^also 

 the genital apertures which are situated near the anus at the pos- 

 terior end of the body. • 



■•^, 



'^ro*^/^;- 



^iijljrM "*^ 



Fig. 170.— V^estern lubber grasshopper, Brachypephus magnus. .^'^^}^'^9^ 

 B, female. This form is found on the plains. (Photographed by Leo r. 

 Murray. ) 



The Locust or grasshopper is one of the most common insects, 

 being known to practically all people, because very few boys and 

 girls grow up without having some experience with a grasshopper. 

 They are widely distributed throughout the world, living on grass 



