SOME INSECTS INJURIOUS TO ORCHARD FRUITS 565 



spread over four times the area previously occupied and became 

 so abundant that State action was again necessary. From 1905 

 to 1910 it spread throughout eastern Massachusetts and southern 

 New Hampshire and Maine, and was found in two or three local- 

 ities in Connecticut. Appropriations for its control have been 

 increased until now the State of Massachusetts and the Federal 

 Government are each appropriating $300,000 per annum and 



FIG. 417. The gipsy moth (Porthetria dispar Linn.): male above; female 

 below natural size. (After Forbush and Fernald.) 



the total cost of combating it in New England must be considerably 

 over a million dollars per year. As it is gradually spreading, 

 there seems every reason to fear that it may ultimately invade 

 other States. 



Life History and Description. The eggs are laid in July and 

 August, in a mass of 400 to 500, covered with yellowish hairs 

 from the body of the female. The mass is an irregular oval 



