LEAFLET 147. U. S. DEPARTMENT OF AGRICULTURE 



In houses it feeds almost entirely upon greasy substances. It is best 

 controlled by use of a poisoned bait (formula 5). If it is kncwn where 



Figure 3.— Winged female of the large black, or carpenter, ant. About 5 times natural size. 



the ants are coming from in the yard, the poison can be placed there 

 and kept out of the house. 



The pavement ant (Tetramorium caespitum L.), introduced from 

 Europe, is well established along our Atlantic coast and builds its 



Figure 4.— The Argentine ant: -I. Wingless female. B, Worker. C.Male. D. Immature stages: a. Eggs: 

 b, young larva: c, full-grown larva: d, pupa, side view; e, pupa, ventral view:/, pupa, dorsal view. All 

 about 12 times natural size 



nests beneath brick, stone, and cement pavings and from these situa- 

 tions finds its way into houses. The colonies are easily killed with 



