CAPE COD CRANBERRY INSECTS 



15 



Yellow-headed Fireworm. 

 Fig. 10. Work on berries. 

 Fig. 11. Caterpillar. Much enlarged. 

 Fig. 12. Pupa. Much enlarged. 



three years, for its parasites generally need only occasional help to keep it 

 down. 



The moths may be killed early in April with a spray of 1 quart of 40 per 

 cent nicotine sulfate and 4 pounds of fish-oil soap in 100 gallons of water.'* 

 This treatment is advisable if there is no prospect of much gypsy moth in- 



18. See note 11, p. 11. 



