WEALTH OF INSECT LIFE 



189 



FIG. 160. Adult male scale Insect (Aspidiotus an-ylus). Enlarged. Drawn 

 by Miss M. E. Wise. 



The true lice, those that live as parasites upon the 

 skin of mammals, belong to the Hemiptera. Some 

 authorities place them in 

 a separate suborder called 

 Parasitica. 



COLEOPTERA. 



These insects possess well- 

 defined mandibnlate month- 

 parts. The wing-covers are 

 horny and do not overlap, 

 but meet along the median 

 line of the back. The wings 

 proper, the ones most useful 

 in flight, are delicate, mem- 

 branous, and are concealed 

 beneath these wing-covers. 

 The metamorphosis is com- 

 plete. These insects are 



. TI j i i f ' 10 ' 161- A water scavenger (Hy- 



commonly called beetles, aropMius trian a uiari). XH. 



