198 



AGRICULTURE ON THE PACIFIC SLOPE 



It is a great foe of the garden, feeding on various kinds 

 of plants. It is called diabrotica. Another injurious 

 beetle which is sometimes mis- 

 taken for a ladybird is the striped 

 beetle found on melons and tomato 

 vines. It is sometimes called 

 squash bug. The only remedy 

 for these beetles is to pick them ! 

 off by hand, or go out early on cool \ 

 mornings with a can containing a 

 little coal oil, and shake them off 

 the vines into the can. 



FIG. 113. Diabrotica, 

 which does much dam- 



Graperoot worm. Figure 114 shows a leaf eaten by this 

 beetle which sometimes does much damage in vineyards. 

 It lays its eggs (late in June) on the stem of the vine near the 

 ground. The 

 worms (larvas) 

 soon hatch out 

 and enter the 

 ground, where 

 they feed on the 

 roots. They pass 

 the winter under- 

 ground. In the 

 spring they be- 

 come pupas and 

 soon come out of 

 the ground as 

 beetles. During 

 May and June the 



FIG. 114. Leaf eaten by graperoot worm. 



