64 INSECTS OF ECONOMIC IMPORTANCE 



sene emulsion 20 to 25% applied just before buds 

 burst will kill the hibernatino- females ; the miscible 

 oils I to 16 or 20 just before the buds burst are 

 effective; ^^ an emulsion of linseed oil and gasoline 

 applied at the same period of tree development 

 as recommended for the miscible oils has been very 

 satisfactory; the emulsion is made by dissolving 2 

 pounds of soap in 4 gallons of hot water and then 

 adding 5 gallons of raw linseed oil and 3 gallons 

 of gasoline and thoroughly emulsifying the whole; 

 then add 88 gallons of water. 



The tarnished plant-bug ^^ (Lygiis prafoisis) 

 Order — Hemiptera 



This widespread bug evidently attacks the fruit 

 of peaches in some years puncturing the epidermis 

 and scarring the surface of the fruits ; as a result 

 gum exudes and the peaches soon become unfit for 

 the market; the bug evidently attacks mostly 

 peaches on trees standing in uncultivated orchards 

 or about the edges of orchards among grass and 

 weeds; it is very injurious to young peach trees in 

 the nursery row; it punctures the buds and tender 

 growing tips thus producing a stunted straggling- 

 young tree; it also attacks apples causing dimples 

 in them. 



The adult is a dull yellowish or greenish bug mot- 

 tled with reddish-brown and about one-fifth inch 

 in length; the eggs are inserted in the tender tips 

 or petioles and veins of leaves ; the life cycle is prob- 

 ably about 45 days and there are probably several 

 generations a year. 



Control — Clean cultivation is the only known 

 method of control. 



^0 Simanton— U. S. Bii. Ent., Bull. 351. 



51 Crosby and Leonard — Cornell Univ. Expt. Stat., Bull. 346. 



