PEAR THRIPS 



111 



this one belongs is of wide distribution and is interesting because 

 both young and old beetles feed on a fungous growth in their 

 burrows, which is referred to as " Ambrosia." 



Remedies. If troublesome, an application of carbolic acid 

 soap is said to give good results if applied in the spring. Use three 

 gallons water, one gallon soft soap, one-half gallon crude carbolic 

 acid. 



Pear Thrips (Euthrips pyri Daniel) . These are minute brown- 

 ish insects, which attack the buds of fruit trees, including the plum, 



FIG. 134. Pear blight beetle (E. pyri); 

 adults and enlarged antennae of female beetle. 

 (Hubbard, U. S. Bu. Ent.) 



FIG. 135. Gallery of pear blight 

 beetle in poplar twig. Cross section 

 above, longitudinal section below. 

 (Marx, U. S. Farmers' Bull., 763.) 



peach, and cherry. The adults are winged, but the young are 

 wingless. They are white and have red eyes. Transformation 

 takes place in the ground beneath the tree. Eggs are laid in fruit 

 stems and in leaves and hatch in four or five days. The punctures 

 made for the eggs cause the young fruit of prune and cherry to 

 yellow and drop to the ground. 



Remedial Measures. From the above statement regarding 

 its life history, it is evident that fall plowing and harrowing will 



