75 

 The common laccd-winged fly, an insect often coming into our 

 houses on warm evenings, shown witli its eggs in figure 06, is a 



Figure 56 



Lace-wing flies, eggs and larvas. 



very useful insect as it feeds on phmt lice. The insect is a very 

 pretty, gauzy-winged creature of a delicate green shade, but its at- 

 tractions disappear it the contact with it is too close, for it pro- 

 duces a most disagreeable odor. Dr. Packard says, that this in- 

 sect, Chrysopa^ is so much esteemed as a destroyer of plant lice, 

 that European gardeners •• search for these aphis lions and place 

 them on fruit trees overrun with lice, which they soon depopulate." 

 There are a number of species of " lady-birds " or "rose-bugs," 

 small reddish globvdar beetles \\'\\\\ black spots and markings, 

 though some are ditlerently marked. Figure 57 gives several dif- 



Figuro 57 



