THE STRIPED PEACH WORM. 13 
The dipterous parasites which emerged in 1915 were identified by 
Mr. Harrison E. Smith, of the Bureau of Entomology, and those 
emerging in 1916 were identified by Mr. W. R. Walton, Entomologist 
in Charge of Cereal and Forage Insect Investigations. 
REMEDIAL MEASURES. 
Experiments were conducted in 1916 to determine the efficacy of 
arsenical sprays in the control of the striped peach worm. Plats 
were laid out in a sand-cherry thicket and sprayed with arsenicals 
according to the formulas in Table XIV, all of the adjoining sand 
cherry serving as checks for comparison. 
TABLE XIV.—Hxperiments for control of the striped peach worm, Benton 
Harbor, Mich., 1916. 
rae Formula used. Date of 
spraying. Result of spraying. 
1 | Arsenate oflead powder, 1 pound to 50 gallons..| June 29 | 5 per cent of terminals webbed. 
water. : 
2 | Arsenate oflead powder, 14 pounds to 50 gallons'...do..... 3 per cent of terminals webbed. 
er. 
Sue Checkunsprayed cess. 22 fe sal U.S Ee eee 90 per cent of terminals webbed. 
At the time of spraying, a few of the larve had hatched and 
webbed a few terminals. The spray material was applied with a 
small compressed-air sprayer at a pressure of 70 pounds and sprayed 
just to the drip. The results of the spraying were very conclusive 
and both sprayed plats were almost entirely free from infestation 
when observed on September 19. 
RECOMMENDATIONS. 
The occurrence of the striped peach worm may be so local as to 
permit of the cutting out of the infested terminals or branches, and 
it will probably not occur in damaging numbers in orchards that are 
sprayed regularly with arsenicals for control of the plum curculio. 
Should the infestation be such as to warrant spraying, it is probable 
that a single application of arsenate of lead paste 2 pounds, or pow- 
der 1 pound, to 50 gallons of water to which 2 pounds of freshly | 
slaked lime is added, applied when the first webbing of the leaves 
appears, will satisfactorily control this insect. 
