68 



INSECTS INJURIOUS TO THE APPLE 



ovipositor, shown in the figure at e; this is wanting in the 

 other species ; c represents a portion of one of her antennae. 



The fore wings of 

 ^^* * the male are paler than 



in pometaria, and more 

 transparent ; they are 

 ash-colored or brown- 

 ish gray, and of a silky 

 appearance. A broken 

 whitish band crosses the wi^gs near the outer margin, and 

 three interrupted brownish lines between that and the base ; 

 there is an oblique black dash near the tip of the fore wings, 

 and a nearly continuous black line at the base of the fringe. 

 The hind wings are plain pale ash color, or very light gray, 

 with a dusky dot about the middle. 



Remedies. — To attack an enemy with success it is essential 



that we know his vulnerable points. In this instance, since 



the females are without wings, if they can be prevented from 



crawling up the trees to deposit their eggs, a great point will be 



gained. Various measures have been employed to secure this 



end, all belonging to one or other of two classes, — first, those 



that prevent the ascension of the moth by entangling her feet 



and holding her there, or by drowning her; second, those 



which look to a similar end by preventing her from getting a 



foothold, and causing her to fall repeatedly to the ground 



until she becomes exhausted and dies. In the first class is 



included tar, mixed with oil to prevent its drying, and applied 



either directly around the body of the tree, or on strips of old 



canvas or stiif paper, about five or six inches wide, and tied 



in the middle with a string ; refuse sorghum molasses, printer's 



ink, and slow-drying varnishes, are used in a similar manner. 



Tin, lead, and rubber troughs, to contain oil, also belong to 



this class of remedies, and have all been used with more or 



less success. In the use of any of the first-named sticky 



substances, it should be borne in mind that they must be kept 



sticky by frequent renewal of the surface in mild weather, or 



