40 



account of their rapid rate of increase, and the wide range of food plants, 

 their control is becoming a ,serious problem in our city parks and streets. 



1885, Lintner, Rept. N. Y. State Ent, 2:68-89. 



1890, Packard, 5th Rept. U. S. Ent. Comm., p. 373. 

 '1893, Hopkins, Bui. 32, W. Va. Agri. Exp. Sta., p. 234, No. 459. 

 • 1895, Howard, Yearbook U. S. Dept. Agri., pp. 368-375. 

 tl897, Howard, Bui. 5, (Tech. ser.) Div. Ent. U. S. Dept. Agn.. 



pp. 5, 57. 



*1897, Howard, Bui, 9, (n. s.) Div. Ent. U. S. Dept. Agn., pp. 15-17. 



1898, Felt, Ext. Rept. N. Y. Fish, Game & Forest Coram., pp. 8-17. 



1899, Howard, Farmers' Bui. 99, U. S. Dept. Agri., pp." 12-20. 



Family Saturniidae. 



Samia cecropia Linn. The Cecropia Moth. The Cecropia is the 

 largest of our Giant Silk worms, the adults often measuring six and one- 

 half inches across the expanded wings; The full grown larva measures 

 from three to' four inches in length and about three-fourths of an inch 

 in diameter, and is a dull bluish-green ■ in color. It is a voracious feeder, 

 and because of its large size does, not require a very long time to entirely 

 strip a small tree. The favorite food plant is the apple tree, and consid- 

 erable injury was caused to stock in Ohio nurseries during 1905. Prof. 

 Bruner reports it as a pest on black locust trees in forest plantations in 

 Nebraska. It is best destroyed by hand-picking the worms during the 

 summer, or gathering and destroying the cocoons which remain on the 

 trees over winter. 



tl890, Brunerj Bui. 14 and 4th Rept. Neb. Agri. Exp. Sta., pp 9-20. 



Antherea polyphemus Linn. (Syn. Telea). The American Silk 

 Worm. This is another of the Giant Silk Worms, but not quite as large 

 as the Cecropia. The larva measures about three inches in length when 

 full grown, is light green in color, with an oblique yellow line on each 

 side of each abdominal segn^ent, except the first and last. The back is 

 ornamented with small, orange colored tubercles. The cocoon is shorter 

 and rounder than that of the Cecropia, and is usually enclosed in a leaf. 

 The same methods of control may be used in this as in the preceding 

 species. 



1890, Bruner, Bui. 14 and 4th Rept. Neb. Agri. Exp. Sta., pp. 20-24. 



Porthetria dispar lArm. {Syn. Ocneria). The Gypsy. Moth. This- 

 is an introduced species which has established itself in eastern Massa- 

 chusetts, southern New Hampshire and Rhode Island, and is slowly but 



* Parasites. , . , , - 



t Description, life history and food plants. 



