6 CONNECTICUT EXPERIMENT STATION BULLETIN I53. 



Means of Distribution. 



As the caterpillars of both species crawl about in going 

 from one tree to another, they are very apt to invade freight 



Fig. 2. — Gypsy moth caterpillar. 



(After Howard, Bur. of Ent., 

 U. S. Dept. of Agr.) 



Fig. 3.— Cocoon of gypsy moth. 



(After Howard, Bur. of Ent., 

 U. S. Dept. of Agr.) 



cars on the siding, and be carried to other places. Both kinds 

 of caterpillars have the habit of spinning down on slender 



Fig. 4.— Male gypsy moth. 

 (After Howard, Bur. of Ent., U. S. Dept. of Agr.) 



threads from their food trees, and may thus drop on carriages, 

 automobiles or railroad cars, and be carried long distances 

 into a part of the country heretofore uninfested. 



