Tent Caterpillars. 



559 



not many of them will live through the three applications above 

 specified, if they are thoroughly made, and the same statements 

 will apply to the forest tent caterpillars. 



The L,ife-Story of the Tent Caterpillars. 



In order to combat an insect pest the most effectively, one 

 should know its life-story. This story of the lives of the apple 

 and forest tent caterpillars may be briefly told by the aid of the 

 pictures in figure 102. These 

 two tent caterpillars are dis- 

 tinct kinds of insects but are 

 very nearly related to each 

 other and each has practically 

 the same general life-history, 

 differing only in some details 

 of habits. The story of the 

 Apple-tree Tent Caterpillar 

 (Clisiocampa americana) has 

 been interestingly told in the 

 Teacher's Leaflet No. 5, which 

 anyone can get free by apply- 

 ing to the Bureau of Nature- 

 Study, CoUegeof Agriculture, 

 Ithaca, N. Y. 



At the date of writing (last 

 week in May), the forest tent 

 caterpillars (Clisiocampa dis- 

 stria) are nearly full grown ; 

 the picture at c in figure 102 

 was recently taiken from life. 

 In about two weeks, or early 

 in June, the caterpillars will 

 be seen wandering about seek- 

 ing a suitable place to undergo their wonderful transfor- 

 mations. They may select a leaf on or under the tree on 

 which they fed, as did the one shown in the frontispiece, or some 

 angle in your house or rail-fence may afford a more suitable 

 place. Here the caterpillar will begin to spin about itself a white 



102.— The Life-story of the Forest Tent Cater- 

 pillar, fit, male moth ; f female ; p, pupa ; 

 e, fgg-ring recently laid ; g-, hatched egg- 

 ring ; c, caterpillar. Moths andcaterpillars 

 are natural size, andeggs and pupa are 

 slightly enlarged. 



