CREATION BY EVOLUTION 



One of the most striking of the evolutionary habits of ants 

 is social parasitism, which leads colonies of different species 

 to live very near or actually with one another. One of these 



Fig. 5. — A small Texas ant {Mycetosoritis havtmani) that 

 grows fungus. Considerably enlarged, a, worker, dorsal view; 

 b, same in profile; c, male. 



colonies exploits its neighbor, but the character of the exploi- 

 tation varies. One species preys on the brood of another or 

 enslaves it; another species uses its host merely for the 

 purpose of bringing up its own brood; still another merely 



[220] 



