FIG. 5-3 Mayfly naiads: (a) 

 adult of Hexagenia limbafa: 

 (b) naiad of H. //'mfco/o from 

 quiet water; (c) naiad of 

 Hepiagenia flaveicens from swift 

 water (courtesy Illinois Natural 

 History Survey). 



FIG. 5-4 Stonefly: (a) adult; 

 (b) naiad, hoperia confusa 

 (courtesy Illinois Natural History 

 Survey). 



Habitats, communities, succession 



