THE MU.NTIJLY BULLETIN. 35 



from entering the second or third fniit after emerging from the 

 first. 



In some spraying tests this year, but very few infested fruits 

 could be found on thoroughly sprayed trees, while check trees were 

 practically denuded of fruit." 



In addition to spraying, Mr. Foster recommends two or three thorough 

 cultivations at picking time to destroy the larvje entering the soil for 

 pupation and hibernation. lie also suggests a S per cent distillate-oil 

 emulsion to which has been added nicotine sulphate at the rate of one 

 part to 2,000 parts of water. This should be applied to the trees in the 

 early mornings when the adults are on the trees but very sluggish. 



Two internal parasites were reared from this insect by Mr. Foster 

 which would indicate that parasites are responsible for its not doing 

 greater harm every year. 



Distribution. 



This insect was first reported in the Suisun Valley. Solano County, 

 by ^latthew Cooke in 1883. It has since been reported as occurring in 

 the same locality l)y a number of investigators. ^Mr. Foster, in a letter 

 to the writer under date of May 13, 1013, states : 



''Relative to its distribution and occurrence in California, I have 

 found it very prevalent in Solano County, also have found a few 

 specimens in Contra Costa County, in Napa County, one specimen 

 from Yolo Count}'." 



In addition the writer has received specimens of the larva^ infested 

 cherries from Nevada City, Nevada County and Placerville, El Dorado 

 County. 



P. J. O Tiara reports it prevalent in some parts of Jackson Countv in 

 the Rogue River A'alley at Medford, Oregon. 



Food Plants. 



In California the fruit most commonly attacked is the cherry. Clarke 

 also reports the eggs being deposited in the calyx of the plum.^ In 

 Oregon, O'Gara has found the insect more destructive to prunes and 

 plums than to the cherry. He also records l)oth sweet and sour 

 cherries, prunes, peaches and apricots. 



"Can. Ent. XXXVIII, p. 351, 1906. 



