ANM) ()tiii:r ixjiRiors insi-xts of 1907 an'd 1908. T15 



THE FOREST TENT CATERPILLAR, 



Mclacosoiiia disstria Hubn. 



Fig. 00. 

 At times of a serious outbreak tbis is a destructive pest to sbade 

 trees in Minnesota. In a general way it resembles the Orchard Tent 

 Caterpillar. It spins no "tent." however, but coats branches or 

 trunk, wherever it passes, with a silken web. The brownish moth lays 

 its eggs, a hundred or more, in a band about the twigs of its food 

 plant in the latter part of the summer, and there hatches the following 

 spring just after the leaves begin to unfold. When full grown the 

 caterpillar is about two inches long, hairy, a row of white spots down 



