MOSQUITOES AND CATERPILLARS 95 



All of these points may be shown in a single drawing. A 

 colored drawing should be made showing the colors and 

 color pattern. 



Among the characteristics of behavior to be noted are 

 the manner of walking, manner of eating, attitudes when 

 disturbed or frightened, and the processes of moulting and 

 pupating. 



If an inch worm (caterpillar of a Geometrid moth) can 

 be found, note its different methods of walking and the dif- 

 ference in the number of legs. Is there a relation between the 

 different number of legs and the different mode of walking ? 



Some caterpillars go into the ground to pupate, some 

 spin silken cocoons, some simply attach themselves freely 

 exposed. The spinning of cocoons should be watched 

 closely and described fully in the notes. 



A fully spun cocoon should be cut open several days 

 after it is made, in order to see the chrysalid within. If 

 some caterpillars have burrowed into the ground one or 

 two should be dug up after several days in order to see 

 what has happened. If the chrysalid has been made freely 

 exposed note whether its colors and patterns are such as 

 would tend to conceal it if it were hanging against bark or 

 among leaves.' 



Make a drawing of the chrysalid showing and naming all 

 the parts that can be observed. Look for spiracles and 

 for the wings, legs, mouth-parts and antennae of the future 

 moth or butterfly. 



Make drawings and notes describing in detail the issuance 

 of the moth or butterfly from the chrysalid case. Pay 

 special attention to the unfolding and expanding of the wings. 

 By what means does this expansion probably take place? 



Make drawings of the fully expanded moth or butterfly 

 showing not only its general shape but all of its parts. Note 

 all of the details in which it differs from the caterpillar. 

 These include number, character and arrangement of the 



