MISCELLANEOUS NOTES ON INJURIOUS 



INSECTS* 



V. H. Lowe. 



SUMMARY. 



The forest tent-caterpillars were again very abundant during 

 the spring of 1900, causing serious injury to forest, shade, and 

 fruit trees. Arsenite of lime, arsenate of lead and Paris green 

 were successfully used in combating them. The applicatioai was 

 more effectual when made soon after the caterpillars had hatched 

 than after they had become half grown. In villages and cities 

 they were dislodged by streams of hydrant water and prevented 

 from returning by sticky bands or other obstructions fastened 

 about the trunks of the trees. 



In some sections of the State the fruit bark-beetle has caused 

 serious injury by working in the bark of healthy fruit trees, 

 especially peach, cherry and plum. The numerous punctures 

 caused a copious exudation of sap. This injury was noticed 

 about the first of August. Eggs and larvae were found late in 

 the fall in the small twigs and> branches. Much can be done 

 toward controlling the insect by applying a wash to the trunk 

 and larger limbs late in July and trimming out and burning the 

 infested branches during the winter. 



A species of mealy-bug was found on quince trees in sufficient 

 numbers to cause slight injury. It can be successfully combated 

 by applying a solution of whale oil soap, one pound to five gallons 

 of water. 



' Reprint of Bulletin No. 180. 



