No. 123.] REPORT OF THE ENTOMOLOGIST. 91 



Treatment for this pest must be by a destruction of the 

 stalks, either by burning, burying deeply or by feeding to 

 stock. Ensilage should prove effectual. Unfortunately the 

 insect bores in barnyard grass, pigweed and other weeds also, 

 so that destruction of the corn stalks will fail as an entire 

 protection. 



The Federal Horticultural Board has placed a quarantine 

 on all shipments of corn, except shelled corn, from within the 

 present known infested area to other States. A similar action 

 preventing shipping from within the infested area to all other 

 parts of Massachusetts is extremely desirable in order to 

 prevent the establishment of colonies of this pest elsewhere in 

 the State. 



During the spring and early summer the plum curculio 

 (Conotrachelus nenuphar Herbst.) caused considerable injury 

 to plums and also to apples, and in several places the work of 

 the red bugs (Heterocordylus malinus Reut. and Lygidea mendax 

 Rent.) was quite serious. These last-named insects as pests 

 are rather new in Massachusetts, but have appeared in gradu- 

 ally increasing numbers during the last five years. 



In southeastern Massachusetts, particularly in the more 

 sandy localities, the rose bug or rose chafer {Macrodactylus 

 subspinosus Fab.) was unusually abundant on grapes, roses 

 and other plants, and everywhere it was quite in evidence. 

 On the contrary, the elm-leaf beetle (Gallerucella luteola Mull.), 

 which has been almost entirely lacking in the State for several 

 years now, was again so nearly absent as to render spraying 

 for it unnecessary. 



The apple tree tent-caterpillar {Malacosoma americana Fab.) 

 is another insect from which the State was practically free 

 in 1918, except to a slight extent in southeastern Massachu- 

 setts. This pest for a number of years was extremely 

 abundant, reaching its climax in the western part of the Std,te 

 in 1913 and 1914, and in the eastern part about a year later. 



The European war has led to a great increase in the number 

 of gardens in Massachusetts, and with an unusual amount of 

 food supply insects injurious to vegetables have been much 

 in evidence. In June flea beetles (Haltica spp.) caused con- 

 siderable injury to potatoes, tomatoes and beans, and early 



