STRUCTURE 



19 



continues to breathe. Thus we speak of this stage in 

 the growth of the codling moth as the "resting stage" 

 This resting stage of the codling moth pupa l is very 

 short. Then a linal 

 molt takes place and the 

 fully formed codling 

 moth crawls from the 

 cocoon (Figures 11-14). 



This series of changes 

 through which the cod- 

 ling moth passes from 

 egg into caterpillar, FlGURE 14 ._ CoDLING MoTH . 



then into pupa, and 



finally into full-grown moth, is termed complete meta- 

 morphosis. Ants, bees, butterflies, beetles, and certain 

 other insects, all undergo complete metamorphosis. 



There are a number of different terms used to describe 

 the larval stage of insects : 



caterpillars are the larvae of butterflies and moths. 



grubs are the larvae of beetles. 



" wigglers ' ' are the larvae of mosquitoes. 



maggots are the larvae of flies. 



currant worms are caterpillars. 



measuring worms are caterpillars. 



11. Structure and Classification of the Grasshopper. — In 

 order to understand the grasshopper more fully it is 

 necessary to find its place in the classification of animals. 

 All animals that are known have been grouped into classes 

 for convenience in study. The grasshopper belongs 

 to the large class of animals called Insecta (In-sek'ta : 

 Latin, in, in; seco, cut). 



The insects, as a class, have their bodies divided into 



Larvae 



1 Sometimes the codling moth passes into the pupa stage in the fall, 

 thus living through the winter in the " resting stage." 



