128 



polypbagous habit, or the ease Avith which it accommodates itself to so 

 great a variety of plants. These are the three characteristics which 

 most concern the i^ractical man and which make it oue of the most dif- 

 ficult species to contend with. 





^«MS 



// / 



Fig. 27. Icerija purchasi, female larva, third 

 stage — eularged (after Eiley). 



Fig. 28. Iceryapurchasi, male pupa, ventral 

 view — enlarged (after Eiley). 



'•' A very long list of plants might be enumerated npon which this 

 insect is either found accidentally or upon which it can live more or 

 less successfully. But the list of plants, especially of trees, Important 

 to us for their x^roducts, which are seriously affected by it is compara- 



Fio. 29. Jccn/rt piirchaul, adult malo, enlarged ; a, joint of antenna ; h, tip of tarsus ; c, wing pockit 

 and books, still hioih ciil iigrd (al'tt-r Itiley). 



i 



