122 GENERAL ZOOLOGY 



This blind following of reflexes and instincts makes ants 

 much subject to deception by other animals. Such ras- 

 cals live as social parasites in ant communities and are not 

 ejected though they do no work because they have the 

 proper odor or some other quality which takes advantage 

 of the ant's simple instincts. More than fifteen hundred 

 species of ants' guests, or myrmeeophiles, are known. 

 These include beetles, isopods, and other arthropods. 

 Many of them are not known to occur except in ant's 

 nests (Fig. 58). 



