HOW TO KNOW THE IMMATURE INSECTS 



27b. Anterior end of pupa with 1 point. 



Fig. 515 Family PIERIDAE 



The shape of pupa is angular ending in a single 

 spine and is girded loosely. Many species go through 

 several generations a year, making the pupal stage 

 very short. 



Fig. 515. Colll- 

 dryas eubule. 



28a. Tip of fore wings far beyond the posterior edge of the 4th ab- 

 dominal segment; prothoracic femur exposed 29 



28b. Tip of fore wings not beyond the posterior edge of the 4th ab- 

 dominal segment; prothoracic femur concealed 31 



29a. Maxillary and labial palpi concealed; pupa without movable seg- 

 ments FomUy LYONETIIDAE 



29b. Maxillary and labial palpi exposed; with several movable ab- 

 dominal segments 30 



30a. Caudal end of abdomen with lateral projections; maxillary palpi 

 wanting. Fig. 518 Family COLEOPHORIDAE 



Pupation takes place in the larval case ordinarily 

 fastened on the host plant. 



•Pfocrecnot( 



Fig. 516. Coleo- 

 phora malivorei- 



lo Riley. 



30b. Caudal end of abdomen without lateral projections; maxillary 

 palpi present. Fig. 517 Family YPONOMEUTIDAE 



Pupation takes place in a cocoon which is spindle- 

 shaped and suspended in its larval web. 



Fig. 517. Sey- 

 thris eboraeen- 



sis ZeMer. 



182 



