WHEELER— ANT LARV^. 



327 



morphic workers, a similar elimination of the largest individuals 

 may be observed when the colony is left long without food. 



2. Among myrmecophiles and termitophiles Wasmann has shown 

 that there are certain species (symphiles) that have trophallactic re- 



FiG. 12 Diagram to illustrate the expansions of the trophallactic and 

 trophic relationships within and outside the ant colony. The confines of the 

 nest are indicated by the double line. 



lations with their hosts. Among ants especially these relations are 

 so intimate that the symphiles may be regarded as integral members 

 of the colony. The adult Lomeschusine beetles, e. g., are not only 

 fed and licked, but their young are treated as if they were ant larvae, 

 owing to the presence of trichome glands ("external exudate or- 

 gans " of Wasmann) in the former and fatty, or internal exudatoria 

 in the latter. 



