MAINE AGRICULTURAL EXPERIMENT STATION. 191O. 347 



oughly sprayed. Arsenate of lead or Paris green (Formula 6) 

 will kill these caterpillars and should be applied as soon as they 

 begin appreciable work. Applications from the middle to the 

 last of Jmie would probably get all these caterpillars which 

 hatched upon the trees. In case a migration to an orchard from 

 an infested forest growth is feared, the orchard should be 

 sprayed as soon as the caterpillars begin to travel in search of 

 fresh food. If trees not already attacked are banded with a 

 sticky substance, the ascent of caterpillars up the trunk will 

 effectually be prevented. 



Jarring and banding. — The saddled prominents are readily 

 shaken from the branches. The cool of the morning is the 

 most propitious time for jarring. The caterpillars once dis- 

 lodged, their reclimbing can be prevented by banding. 



A material useful for this purpose is sold under the name of 

 Tree Tanglefoot. This substance consists principally of resin 

 softened by the admixture of suitable oils. It is quite similar 

 to that used in the manufacture of adhesive fly-paper, seems to 

 possess the merit of not injuring the trunks of trees, and is very 

 effective in checking the ascent of caterpillars thereon. Where 

 the number of caterpillars jarred from the trees is excessive it 

 is expedient to kill them. A hand spray charged with kerosene 

 or gasoline is a useful means to this end. 



Fowls and Pigs. — Hens will devour these caterpillars greedily 

 and if given the range of an orchard will eat great numbers of 

 the caterpillars which drop to the ground or descend to pupate. 



Pigs pastured in an orchard will, by rooting up and eating 

 the pupge, prevent great numbers of saddled prominents and 

 other moths from emerging and depositing eggs for the follow- 

 ing season. 



7. Apple-Leaf Bucculatrix. 



(Bucculatrix pomifoliclla.) 



The larva of this insect is about one-half inch long when 

 mature, cylindrical, tapering at both ends. Joints of the body 

 rounded and prominent, color dark yellowish, with a greenish 

 tinge and reddish shades on the anterior segments. The larva; 

 are active and when disturbed suspend themselves by a silken 

 thread. 



