462 FRUIT INSECTS 



Control. 



Efficient work can be done against either brood of cater- 

 pillars by thorough spraying with arsenate of lead, 6 to 7 pounds 

 in 50 gallons of water, as soon as the eggs begin to hatch. As 

 the eggs often hatch over a period of four or five weeks, it is 

 sometimes advisable to repeat the application in a week or 

 ten days. Where water is available for reflowing, a large 

 proportion of the pupae can be destroyed by letting the water 

 rise up among the vines without covering them and holding it 

 there for three days. This reflowing should be done when the 

 greatest number of pupae are on the ground. 



A rank growth of vines tends to make the control of this 

 insect difficult and much loss may be prevented by so managing 

 the water and drainage as to keep down the growth of vines 

 and encourage the production of fruit. 



References 



N. J. Agr. Exp. Sta. Bull. K, pp. 10-15. 1890. 

 U. S. Dept. Agr. Farmers' Bull. 178, pp. 9-12. 1903. 

 Mass. Agr. Exp. Sta. Bull. 115, pp. 6-9. 1907. 

 Mass. Agr. Exp. Sta. Bull. 126, pp. 3-5. 1908. 

 Wis. Agr. Exp. Sta. Bull. 159, pp. 6-11. 1908. 



The Yellow-headed Cranberry Worm 

 Alceris minuta Robinson 



This insect has been discussed as an apple pest on page 59. 

 As a cranberry pest it is most troublesome on dry bogs. The 

 green-bodied yellow-headed caterpillars web together the leaves 

 at the tips of the uprights in practically the same way as the 

 black-headed worms. In Massachusetts there are two broods 

 annually, and in New Jersey three. 



Unlike the preceding species the yellow-headed cranberry 

 worm hibernates in the adult state as a slaty-gray moth having 

 an expanse of about J of an inch. They emerge from their 



