40 INSECT ENEMIES OP THE BOLL WEEVIL. 



With this simple beginning the search for other hosts of the boll- 

 weevil parasites was started and we have now built up the laiowledge 

 of the following complex: 



Owing to the complicated nature of the data to be presented in 

 this part, these have also been arranged in the following sections : 



1 . A list of the insect enemies of the boll weevil. 



2. The hosts of boll- weevil parasites. 



3. Mites which attack the boll weevil. 



4. Flies which parasitize the boll weevil. 



5. The hymenopterous parasites of the boll weevil. 



6. Biological notes upon the parasites of the boll weevil. 



7. The development of the parasites. 



8. The distribution of the parasites. 



9. The parasite seasons. 



10. Adjustment to new hosts. 



11. Beetles which prey upon the boll weevil. 



12. Lepidopterous larvse which are incidentally predatory upon 

 the boll weevil. 



13. Ants wliich prey upon the boll weevil. 



14. Biolog}^ of the cohosts of the boll-weevil parasites. 



15. A list of the host plants of the cohost weevils. 



16. A summary of the most important biological facts. 



1. A LIST OF THE INSECT ENEMIES OF THE COTTON BOLL WEEVIL. 



The boll weevil is known to be attacked by 29 species of parasites, 

 while 20 species of predators attack the immature stages and 6 

 species of predators attack the adults. These species are listed as 

 follows : 



Arachnida. 

 Acarina. Sarcoptoidea. 

 Tarsonemidse. Pediculoidinae. 

 Pediculoides ventricosus Newport (parasite on larva), Mexico. 

 Pediculoides sp. (parasite on larva), Louisiana, Texas. 

 Tyroglyphidae. 



Tyroglyphus breviceps Banks (parasite on larva), Texas. 

 Insecta. 

 Orthoptera. Mantoidea. 

 Mantidse. 

 Stagmomantis limbaia Hahn (predator on adult), Texas. 

 Hemiptera-Heteroptera. 

 Reduviidse. 

 Apiomerus spissipes Say (predator on adult), Texas. 

 Coleoptera. Adephaga. 

 Carabidaj. 

 Evarthrus sodalis Le Conte (predator on adult), Louisiana, Texas. 

 Evarihrus sp. (predator on adult), Louisiana. 



