December, '09] journal of economic entomology 401 



picking so that the insect is never allowed to become abundant enough 

 to warrant spraying or dusting, is by all means the most practical 

 method of control in rose houses. With the removal of the plants 

 and thorough fumigation of the empty houses the pest may thus be 

 easily controlled. 



Trap Lights. When the injury was worst, the moths were flying 

 about the house by hundreds, could be picked up beneath every plant, 

 and could be found beneath the benches in the shade in large numbers, 

 often several within a few inches of each other. The owner having 

 observed their attraction to lights, trap lanterns set in pans of water 

 were placed thruout the houses and very large numbers of moths 

 were caught. These lights have been continued during the fall and 

 by the middle of November, fifteen to twenty moths per night were 

 usually caught in the larger house. There can be no doubt of the 

 efficacy of trap lights for this insect in a greenhouse. 



For the control of the insect upon apples and other orchard trees, 

 cane and small fruits, and its numerous other food plants, there would 

 appear to be no reason why a thorough application of arsenate of 

 lead to the young foliage and again in midsummer at the time of the 

 emergence of the second brood, should not control it entirely. The 

 determination of its hibernating habits and measures to destroy it in 

 hibernation might also be of value. 



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