HYMENOFIERA 



57 



Ant nests are easily found in decaying logs and under 

 stones and boards during the summer and autumn months 

 containing eggs, larvse, pupse, workers, and queens. The 

 eggs are white, just visible to the naked eye, and the larvse 

 may be distinguished from the pupse sometimes encased in 

 cocoons, by the ab- 

 sence of legs. 



The favorite food 

 of some ants is the 

 honey dew ex- 

 creted by plant lice 

 from the alimen- 

 tary canal. Most 

 ants are fond of 

 any kind of sweets 

 and sometimes 

 cause much annoy- 



i FIG. 39. Wheat plant louse enlarged 



ance in houses. 

 They are easily got 

 rid of by sprink- 

 ling places frequented by them with a mixture of four 

 parts pulverized sugar and one part arsenic. More than 

 two thousand species of ants have been described. A 

 half dozen different species may be found in almost any 

 locality. 



Sawflies 



The sawflies are so named because of the structure of 

 the ovipositor which contains two saws capable of being 

 moved up and down to make apertures in vegetable tissue 

 to receive the eggs. The habits of these insects which are 



about five 



times, a, winged female; d, wingless female with 

 a hole from which a parasite escaped; b, young louse. 

 After Biley. 



