138 



THE MEXICAN COTTON-BOLL WEEVIL. 



Hydnocera pallipennis Say. — A single beetle of this species was 

 reared April 6, 1907, from the boll weevil, collected August 28, 1906, 

 at Waco, Tex. 



Fig. ZX.—Evarthrus sodalis, an enemy of 

 the boll weevil. (Original.) 



Fig. 32. — ChauUognathus marginatus, an ene- 

 my of the boll weevil. (Original.) 



Hydnocera pubescens Le Conte (fig. 33). — This is a very common 

 breeder in the weevil cells. Its larvae have been not only found feed- 

 ing upon the various weevil stages, but have been frequently observed 

 feeding upon the parasites of the weevil. 



CUCUJID^E. 



Cathartus gemellatus Duval. — This beetle is a predator and scaven- 

 ger, its larvae being frequently found feeding upon boll-weevil stages 

 which they must have killed. 



TENEBRIONID.K. 



Opatrinus notus Say. — This beetle has been found by Mr. Harry 

 Pinkus at Tallulah, La., to prey as an adult upon the immature stages 

 of the weevil in fallen squares during July. It occurred very com- 

 monly in the cotton fields. 



LEPIDOPTERA. NOCTUID.E. 



Alabama aryillacea Hiibner. — For many years the ravages of the 

 cotton leaf worm attracted almost as much attention in some portions 

 of the South as does the damage by the boll weevil now. Various 

 changes in the system of cultivation of cotton in the South have 

 combined to reduce the damage done by this pest, and, moreover, a 

 veiy effective method of controlling it, by the use of Paris green, was 

 discovered. It is one of the striking occurrences in the history of 

 economic entomology that this formerly dreaded pest is now looked 

 upon by the farmers in weevil-infested regions as decidedly beneficial. 



