22 



trees and forest trees, was accidentally introduced by a 

 Massachusetts entomologist into New England.' 



" These arc the only notices I have thus far been able to 

 find of the introduction of this insect into America. Mr. 

 Samuel Henshaw and Dr. Hagen of Cambridge have both 

 informed me that the entomologist who introduced this 

 insect was INIr. L. Trouvelot, now living in Paris, but at that 

 time living near Glenwood, Medford, where he attemi)ted 

 some experiments in raising silk from our native silk worms, 

 and also introduced European species for the same pui'pose. 

 Dr. Hagen told me that he distinctly remembered hearing 

 Mr. Trouvelot tell how they escaped from him after he had 

 imported them. 



"It seems, then, that this was an accidental introduction, 

 but that they have now become acclimated, and are spread- 

 ing and doing so much damage as to cause very great alarm. 



Distribution. 



"The gypsy moth is abundant in nearly all parts of Europe, 

 northern and western Asiaj and it even extends as far as 

 Japan. (In this country it has been found only in nineteen 

 cities and towns of Massachusetts. The whole of Medford, 

 Maiden and Everett and sections of Arlington, Melrose, 

 Somerville, Cambridge and Chelsea are thoroughly infested, 

 while in Stoneham, Winchester, Belmont, Saugus, Revere, 

 Lynn, Lexington, Swampscott, Wakefield, Burlington and 

 Charlestown they have been found more or less prevalent.) 



Food Plants. 



(It has been ascertained by experiment at the office of the 

 Gypsy Moth Department in Maiden, Mass., that they will 

 feed on the following-named trees and plants : maple, elm, 

 willow, horse chestnut, balm of gilead, birch, ash, sycamore, 

 walnut, oak, basswood, witch hazel, pine, spruce, cedar, 

 hemlock, apple, peach, cherry, pear, quince, blackberry, 

 currant, barberry, grape, whortleberry, blueberry, straw- 

 berry, hop, cabbage, beet, lettuce, radish, corn, dandelion, 

 woodbine, tulip, hawthorn, azalea, rhododendron, wistaria, 

 hollyhock, wygelia, syringa, rose and Japan quince.) 



