70 ELEMENTARY LESSONS ON INSECTS 



I. The horny-winged bugs {Hemiptera proper) in which 

 the fore wings are half horny (the basal half) and 

 half membranous.* 

 II. The membranous winged bugs (Hemiptera-Homop- 

 tera\) in which the fore wings have a more uni- 

 form texture. 



III. The aphids, or plant lice, minute and gregarious and 

 mostly wingless. 



IV. The scale insects, or bark lice. 



LESSON 6 



Bugs 



WORK PROGRAM 



1. Collect some bugs from any weedy pool of permanent 

 water. 



2. Collect some squash bugs or any similar broadbacked 

 plant bugs in the garden. Adults and young and eggs of the 

 squash bug may all be found together on the same vine of 

 squash or cucumber or pumpkin. 



3. Collect some of the membranous winged Homoptera, 

 such as cicadas or tree hoppers. 



4. Collect some of the minuter members of this same 

 group, leaf-hoppers or lace bugs, together with their cast 

 nymphal skins (the latter to mount for study of mouth- 



* Hemi, half and pteron, wing. 

 f homos, alike. 



