97 

 This was followed by a paper by Mr. Symons on — 



ENTOMOLOGICAL NOTES FOR THE YEAR IN MARYLAND. 



By T. B. Symons, Collegepark, Md. 



The past year has not been marked by any unusual outbreaks of 

 injurious insects, except in the case of a few species, which will be 

 cited briefly. The usual depredations by the San Jose scale have 

 occurred, and which, it may be said, is being controlled in a marked 

 degree in many sections of the State by the use of the lime, sulphur, 

 and salt wash. 



Many complaints were received in the spring from the damage done 

 to apple foliage by the "apple aphis" (Aphis spp.), and it was neces- 

 sary to recommend several washes for their control. "Rose Leaf," 

 one part to forty parts of water; 15 per cent kerosene emulsion, and 

 whale-oil soap, one pound to the gallon of water, were the washes 

 suggested. 



The strawberry weevil (Anthonomus signatus Say) likewise did 

 considerable damage to strawberries in the State. This injury was 

 especially severe this year from the fact that a large number of the 

 early blooms were killed by frost, which left a smaller percentage for 

 the needs of the weevil, reducing the crop in some instances one- 

 fourth of the average one. 



Early in Ma}^ and, in fact, throughout the summer months the 

 ravages of the fruit-tree bark-beetle (Scolytus rugulosus Ratz.) were 

 apparent in many orchards in the State. May 13, at St. Margarets, 

 we observed several hundred trees injured by the beetle. My atten- 

 tion was called to many instances where the beetles had attacked 

 perfectly healthy trees of peach, plum, and cherry. While this insect 

 commences its work on sickly or half-dead trees, there is no doubt 

 but that the beetles have developed the habit of attacking perfectly 

 healthy ones. There seem to be no better remedies than to destroy 

 the infested trees and the preventive measures of keeping dead wood 

 cut out of the orchard and carefulty burning all the brush. 



The apple-tree tent caterpillar (Clisiocampa [Malacosoma] ameri- 

 cana) was present in unusually large numbers during the early 

 spring, but was practically controlled by burning and by the use of 

 arsenical j>oisons, together with the unfavorable weather conditions. 



There was localty a serious outbreak of the corn stalk-borer (Dia- 

 trcva saccharalis), which attacked a field of corn in Kent County, 

 damaging about 25 per cent of the cornstalks. This insect has not 

 appeared in injurious numbers in Maryland since 1898, and it is 

 peculiar to note its presence in such great numbers in two or three 

 cornfields this year. Its injury consists in boring into the stalks of 

 corn, thereby weakening them, and where several occur on a stalk it 



22564— No. 46—04 7 



