DEVELOPMENT 



a place, 



masses, 



scatter 



LMOST all Insects start from eggs laid by the fe- 

 male. These eggs vary greatly In shape, size, 

 color, and place of deposit, L^any Insect eggs are 

 g beautifully sculptured. The number laid by one 

 female ranges from three or four for some species 

 to several hundred or even thousands by other 

 species. In most cases It will run Into hundreds, 

 which accounts for the sudden prodigious Increase 

 of many Insect pests. Some lay their eggs one In 

 more or less widely scattered. Others lay their eggs In 



then the young on hatching live a gregarious life or may 



out. 



^ Wm 



Figure 2. SoTiie Insect Egf:s, 



Some Insects such as grasshoppers or chinch bugs when they 

 hatch, look like the adult but are much smaller and do not have 

 wings. The head Is usually quite large proportionately, for 

 feeding Is a most Important function at that age. They often 

 grow with amazing rapidity. Since their skeleton Is on the out- 

 side and restricts their enlargement. Insects "molt" or shed 

 their skeleton from time to time during the growing stage and 

 acquire a more roomy covering which permits further growth. Wing 

 pads appear rather early and after the last molt (often the fifth) 

 the Insect has fully developed wings, and Is mature sexually. 



Figure 3, Nymphs are young insects that somevriiat 

 resemble their parents. 



