INSECTS, AND THEIR RELATION TO MAN 175 



Conclusions. 1. Note. Insects having fore wings, half 

 hard and half membranous, are said to be " half-winged " in- 

 sects, and are members of the Order Hemiptera. 



2. For what are the mouth parts fitted ? 



f . The Dragon Fly (a Nerve-winged Insect) 



Observations. 1. Identify the body regions and the number 

 of parts of legs. 



2. How do the fore wings differ from any so far studied ? 



3. Study the mouth parts. 



Conclusions. 1. For what are the mouth parts fitted ? 



2. Note. Insects having the wings with a network of evi- 

 dent nerves are said to be "nerve-winged" insects, and are said 

 to belong to the Order Neuroptera. 



g. The Bee (a Membrane-winged Insect) 



Observation. Follow the directions under f . Insects, such 

 as bees and ants, having two pairs of membranous wings 

 are known as membrane-winged insects, and belong to the 

 Order Hymenoptera. 



h. Summary of Differences between Orders 



Make a table of differences among the seven orders of in- 

 sects studied, using a form similar to the following : 



Conclusion. What are some of the means of distinguishing 

 the orders of insects from one another ? 



