HEMIPTERA. 



These insects, along with the beetles, and, for that 

 matter, nearly all the other insects except the butterflies 

 and the moths, are called bugs, and these, alone, of all 

 of them, are entitled to the name. The name of the order 

 has reference to the peculiar make-up of the front wings. 

 In the true hemipters, these have the base of the wing- 

 covers thickened so as to be nearly opaque; while the hind 

 wings are clear and transparent, or nearly so. (Fig. 46.) 



FIG. 46. Front wing of an hemipter. 



This is the order of the bugs, using the word in its 

 true signification, and not including beetles, wasps, flies, 

 or ants, nor any others of the insect kind, which we so 

 frequently mean when we say "bugs." 



The order may be divided into: (i) Parasitic, wing- 

 less forms with unsegmented sucking beak. Examples 

 of these hemipters are the lice of the dog, horse, cattle, 

 hog, or sheep kinds, and also the human louse. (2) Winged 

 or wingless forms with the beak segmented ; wings, when 

 present, of the same texture throughout. Here are found 

 the cicadas, the plant lice and scale insects, mealy bugs, 

 leaf hoppers, and gall-forming aphids. (3) Winged insects 



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