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INSECT ENEMIES OF THE BOLL WEEVIL. 



16. A SUMMARY OF THE MORE IMPORTANT BIOLOGICAL FACTS. 



1 . The boll weevil has 54 enemies, including parasites and predators. 



2. These enemies are native to other insects wliich are to be found 

 in the vicinity of cotton fields. 



3. The interrelationships of the boll weevil and its parasites with 

 surrounding insects are very complicated. 



4. The parasites are sometimes found in great numbers. 



5. The cotton plant, by its production of nectar, furnishes a very 

 powerful attraction for parasites and predatory insects. 



6. The development of the boll-wee\dl parasites is as rapid as that 

 of the boll weevil. 



7. Most of the parasite species are well distributed. 



8. The parasite species attack other hosts in the spring and have 

 a generation before the boll weevil is ready for them. 



9. New species of parasites are becoming adapted to the weevil 

 each year. 



