78 ASSOCIATION OF ECONOMIC ENTOMOLOGISTS. 



young orchards. Investigation of several of these cases revealed the 

 fact that many of the trees thus reported as being killed by the shot- 

 hole borers had been previously injured and weakened by peach 

 borers, cold weather, or through injury by cultivation or lack of 

 same. In a few cases, however, apparently healthy trees were being 

 badly attacked, leading us to the conclusion that healthy trees are 

 sometimes seriously injured by the barkbeetle, in spite of opinions by 

 eminent authorities to the contrary. 



Numerous orchards last spring showed the work of the peach- 

 twig borer (Anarsia lineatella Zell.), but the damage resulting was 

 not great. Orchards which had been sprayed the winter before with 

 lime-sulphur wash were for the most part uninjured. 



The plum curculio (Conotrachelus nenuphar Hbst.) was abundant 

 during 1905 in many orchards and caused considerable loss of fruit. 

 Much good work toward controlling this insect in Georgia is done 

 each year by gathering all fallen fruit every two or three days, this 

 practice being followed by many of our largest orcharclists. The 

 jarring method for capturing the beetles is practiced in some few 

 orchards with good results, but this method of fighting the curculio is 

 not generally accepted because of the amount of labor necessary to 

 successfully carry out the operation. 



The southern June beetle {Allorhina nitida L.) was observed June 

 29, 1905, at Baldwin, Ga., eating the leaves off the young shoots of 

 peach trees. 



On April 8 a nurseryman at Rome, Ga., sent specimens of the tar- 

 nished plant bug (Lygus pratensis L.), and stated that they were 

 severely injuring young pear stock in the nursery rows. May 22 a 

 similar report came from Buff, Ga., except that the insects were work- 

 ing on young apple grafts. We advised spraying with kerosene 

 emulsion at 15 per cent strength, which was found to be successful. 



The gloomy scale (Chrysomphalus obscurus Comst.) is found in 

 nearly all parts of Georgia on the oaks and maples. In the city of 

 Atlanta it is almost impossible to find a tree not infested. 



Several common apple insects have been injurious in Georgia this 

 year, among which the following are the most important : 



The woolly aphis of the apple (Schizoneura lanigera Hausm.) is 

 nearly everywhere abundant, and particularly in the older apple 

 orchards. The aerial form is not serious, nearly all the injury from 

 this insect coming from the ground form, in which it is too often 

 allowed to increase unmolested. Tobacco dust has been used with 

 some success on the young orchards, but we have found it necessary 

 to make at least two applications of dust each year to insure even 

 partial success. 



A series of experiments was started by our department with a view 

 of finding a good remedy for the underground form. The work was 



