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ECONOMIC ENTOMOLOGY 



^SS^- — ^Laid in immense numbers by the solitary queen mother; 

 minute, oval, whitish; cared for by the workers. 



LarvcB. — Fed by workers. 



Pupa. — White, cared for by workers; egg-like but much larger 

 than the true eggs. 





Pig. 239. — The little red, or Pharaoh's ant (Monotnorium pharaonis) : a, queen or 

 female; h, worker. Both drawings enlarged to the same scale. {After Marlall.) 



Control. — Destroy nests with hot water or carbon bisulphide; dust 

 with sodium fluoride; trap ants in sponges soaked in sweetened water 

 or in a syrup poisoned with arsenate of soda. Formula: sugar, i lb.; 

 arsenate of soda, 125 grains; water, i qt.; boiled and strained. 



Lawn or Com Ant (Lasius niger var. americanus Em.). — This ant, 

 which is very abundant in the corn-growing districts of the Central 



