



m^fe^^-; ^ 



Photo by the Author 



-MOUND OP THE THATCHING ANT (Formica ntbiginosa) of Colorado 



The mound, which is made of coarse twigs and grass-blades, may be two or three feet in 



diameter 



ANT GUKST OR PARASITE; (Atcmeles) SOLICITING FOOD FROM A WORKER Myvmica 



(after e. wasmann) 



The beetle strokes the cheeks of the ant in order to induce her to regurgitate a drop of 

 liquid food from her social stomach. Any insect which by means of its shape, odor, or be- 

 havior can delude the ants into feeling that it may be another out or one of their larvse can 

 secure free board and lodging in their nests (see text, page 748). 



760 



