ECONOMIC ENTOMOLOGY. 21 



taper at the ends, instead of ending abruptly and verti- 

 cally. 



They are called Tent Caterpillars because they spin a 

 web, living in a community under it and going out twice a 

 day to feed. 



Remedies. The tents may be destroyed or the larvje 

 killed as they crawl over the trunks of the trees. The twigs 

 bearing the egg masses may be cut off and destroyed. The 

 best method, however, is spraying the trees with arsenical 

 poison, which will not only destroy the larvse but also many 

 other injurious insects infesting the tree. 



THE TOMATO WORM. 



(Macrosila qvinqtiemaculata.) 



This insect is also frequently called the potato worm. 

 The pupa (in which form it hibernates), is readily recog- 

 nized by the case in which the tongue develops being bent 



Pig. 21. Fig. 22. 



Tomato Worm and Pupa. (About one-fourth natural size.) 



around so that it resembles the handle of a pitcher. The 

 larva is a large green caterpillar with oblique whitish 

 stripes on the sides and a horn on the anal extremity. The 

 imago emerges in June and July. 



The larvae are so large that hand-picking is a good rem- 

 edy. The moths may be caught with a net. 



THE CODLING MOTH. 



(Varpocapsa pomonella, Linn.). 



The Codling Moth is easily distinguished from other 

 moths by a large egg-shaped spot, brown in color, edged 



